essay on population density

ENCYCLOPEDIC ENTRY

Population density.

Population density is the concentration of individuals within a species in a specific geographic locale. Population density data can be used to quantify demographic information and to assess relationships among ecosystems, human health and infrastructure.

Geography, Geographic Information Systems (GIS), Human Geography

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A population is a subgroup of individuals within the same species that are living and breeding within a geographic area. The number of individuals living within that specific location determines the population density, or the number of individuals divided by the size of the area. In the case of humans, population density is often described as the number of people per square kilometer (or per square mile) and is discussed in relation to urbanization , migration and demographics .

Globally, statistics related to population density are tracked by the United Nations Statistics Division. Many countries also collect their own data on population density, often through the use of a census. In the United States, for example, the Constitution requires population data to be collected every 10 years, a task carried out by the U.S. Census Bureau. China also conducts a census once a decade and uses the information for economic and social planning. In recent years, some countries have employed new technologies to confirm population density and predict changes. China, for example, analyzes nighttime light data collected from sensors in space to confirm current population density calculations and to predict how density will change in coming years. Other countries use computer algorithms to interpret census data and forecast future growth.

There are also independent research groups that track population density across the world. Independent groups are especially helpful in countries that have few resources or are facing challenges (such as conflict) that make it difficult for the government to collect accurate data.

Data on population density at the national and regional levels is not always useful, however. One reason for this is because census data can be flawed; in particular, it sometimes fails to count entire groups of people, such as nomadic populations, migrants, refugees, people experiencing homelessness, residents of informal settlements (such as favelas) and others who do not have clear citizenship status. Collecting census data often relies on census takers visiting people at home, so residents who live in areas where there is conflict or who live in remote, hard-to-access places may also not be counted. In many places, forms have replaced census takers, but this can contribute to inaccuracies in areas with low literacy rates.

Population density provides the number of people living on a given area of land (such as people per kilometer or per square mile), but it does not describe how people relate to the land of that country. For example, society tends to form clusters that can be surrounded by sparsely inhabited areas, and life might be very different for those who live in the cluster versus those who live outside of it. Similarly, the population density of an area that includes a large city and desert may be the same as that for a population that is more evenly spread in an area, despite the fact that the two areas have little in common in terms of crowdedness. As a result, population density is more useful when applied to small areas, such as neighborhoods, than to entire regions or countries.

Some methods of calculating population density are more helpful for certain kinds of analysis than a strict “people per unit of land area” formula. Physiological density is a calculation of how many people in the country are supported by a unit of arable land. This can reveal how much pressure is put on the country to produce enough food for the population. Agricultural density measures how many farmers or people living in rural areas there are versus how much arable land. These kinds of metrics help illuminate issues of population density that would otherwise be missed.

Dense population clusters generally coincide with geographical locations often referred to as city, or as an urban or metropolitan area; sparsely populated areas are often referred to as rural. While these terms do not have globally agreed upon definitions, they are useful in general discussions about population density and geographic location.

Population density data can be important for many related studies, including studies of ecosystems and improvements to human health and infrastructure . For example, the World Health Organization, the U.S. Energy Information Administration, the U.S. Global Change Research Program and the U.S. Departments of Energy and Agriculture all use population data from the U.S. Census or United Nations statistics to understand and better predict resource use and health trends. Key areas of study include the following:

• Ecology: how increasing population density in certain areas impacts biodiversity and use of natural resources .
• Epidemiology: how densely populated areas differ with respect to incidence, prevalence and transmission of infectious disease.
• Infrastructure: how population density drives specific requirements for energy use and the transport of goods.
• Urbanization: how population density relates to overcrowding, housing shortages and the provision of services.

This list is not inclusive—the way society structures its living spaces affects many other fields of study as well. Scientists have even studied how happiness correlates with population density. A substantial area of study, however, focuses on demographics of populations as they relate to density. Areas of demographic breakdown and study include, but are not limited to:

• age (including tracking of older populations);
• race , ethnicity and cultural characteristics (ethnic origin, religion and language)
• socioeconomic characteristics (including poverty rates)

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Geography Notes

Essay on world population: top 10 essays | human geography.

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Here is a compilation of essays on ‘World Population’ for class 8, 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘World Population’ especially written for school and college students.

Essay on World Population

Essay Contents:

• Essay on the Views of Malthus on World Overpopulation

Essay # 1. Introduction to World Population:

Human and economic geography are concerned with Man and his use of natural resources. The way in which land, sea, minerals, forests, and water supplies are used varies very much around the world, chiefly because of the wide variation of human numbers, human types and the stage of development of different human groups.

The rapid growth of population is perhaps the most obvious factor affecting present and future na­tional and regional development, but it is by no means the only population problem in the world today. Un­even distribution of population and conflicts stem­ming from racial, cultural, religious, social or political diversity are problems in almost every country in the world.

In 1977 the total world population was estimated at 4,105 million and by the end of the twentieth cen­tury it will have reached about 7,000 million. It is seen that world population is increasing ever more rapidly. This is because it increases in geo­metrical fashion (i.e. 2, 4, 8, 16, 32, 64, 128, . . .), rather than arithmetically (1, 2, 3, 4, 5, 6, 7, . . .).

Moreover the rate of growth in the last two centuries has been accelerated by the great advances in medicine, hygiene, and nutrition made all over the world. Death rates and particularly infant mortality rates have been drastically reduced so that more children grow up and themselves have families.

But enormous as the world population is, mere numbers do not present a problem if all the people in an area can be adequately fed, clothed, housed, edu­cated and employed. But this cannot always be done and this is why population growth creates problems.

Some of the main difficulties arise because people are not distributed evenly over the earth and because the age and sex structure of populations varies widely from country to country. Only in terms of these factors can we discuss whether a country is under- or over- populated.

Essay # 2. Distribution of World’s Population:

In terms of continents and countries the world’s popu­lation is very ill-balanced. More than half of the world’s people live in Asia (excluding the U.S.S.R.) which accounts for only one-fifth of the world’s land area, while North, Central and South America together, occupying more than a quarter of the land surface, have only one-seventh of the population.

The African continent also accounts for a quarter of the land sur­face but has just over one-tenth of the world popula­tion. On the other hand Europe, whose area is only one twenty-fifth of the total, has about one-ninth of the world’s people.

The distribution within the continents is also un­even. In Asia, China alone, with ab  out 900 million people, accounts for half the Asian and a quarter of the world population. The Indian subcontinent has a further 710 million people. In Europe too, the popu­lation is unevenly distributed. Far more people live in northern and western European countries than in southern and Eastern Europe.

The U.S.S.R. is the largest country in the world and has 259 million peo­ple but only a quarter of them live in the Asian sec­tion. In Africa and the Americas people are for the most part spread very thinly across the land, leaving large sections such as northern Canada, south-western U.S.A., the Sahara Desert, and the Amazon forests practically uninhabited.

The distribution of population depends to a large extent on the quality of the land itself, which is very uneven. Where the land is well suited to agriculture or there are natural resources for industrial development the population will naturally be larger than in areas where climatic conditions are hostile or where re­sources are few.

Thus population density, that is the number of people living in a unit area, varies widely. In Singapore there are nearly 4,000 people to the square kilometre (ppsk)or 10,300 people to the square mile (ppsm); in Belgium there are 320 (840); in Brazil only 13 (34) and in Mongolia less than 1 ppsk or 2 ppsm, though even within these countries the population is far from evenly spread.

A map of world population densities shows that while the great majority of the land surface is sparsely or moderately populated (between 0 and 50 ppsk or between 0 and 125 ppsm) some limited areas are very densely populated.

These areas are Western Europe, the Indian subcontinent, the plains and river valleys of China, and north-eastern U.S.A. Smaller concen­trations of people are found in the Nile Valley of Egypt, the island of Java in Indonesia and the south­ern part of Japan.

The factors which lead to high population densities are often complex, but those which restrict popu­lation are clear-cut. They are usually climatic factors and, despite modern advances in technology, most ’empty’ areas are never likely to be much more densely peopled than they are today.

Essay # 3. Features of Population Patterns in the World:

The broad features of world population distribution are clearly related to climatic, soil, and other physical factors. This is because such factors regulate the type and amount of crops which can be grown, determining both negative and positive areas for economic develop­ment.

But physical factors are not the only ones which affect population distribution. In most parts of the world the basic pattern of population due to physical factors has detailed variations imposed upon it as a result of social, ethnic, cultural or historical factors.

Some of the most important of such factors are the concentration of racial or linguistic groups in limited areas; the dominance of particular religions in certain areas which may in turn affect birth rates or economic development; the way of life of particular population groups which may mean for instance that a large area of land is required to support a relatively small num­ber of people; the history of settlement, which for instance has led to the dominance of the eastern sea­board in North America; and the history of coloniza­tion, which has led to the development of some tropi­cal areas, especially those nearest the coast.

Moreover modern developments such as rural resettlement, the introduction of new farming techniques, industrialization, the drift to the towns, and changes in the standard of living, are all leading to changes in the population patterns of many countries.

It is not possible in this book to cover the popula­tion pattern of the whole world in detail, but by deal­ing with some countries as examples the comparative roles of basic physical features, economic and social factors can be better understood.

(i) People’s Republic of China:

China has the largest population of any country in the world but its average population density is only about 75 ppsk (200 ppsm). Compared with countries such as the Netherlands (average density 410 ppsk: 1,601 ppsm) or Japan (310 ppsk: 800 ppsm), China does not appear particularly densely peopled.

However, average densities can be misleading where there is a very uneven spread of population, for about three- quarters of China’s population is concentrated in only 15 per cent of the land area. The most densely settled region is in the east, while the western half of the coun­try is still under-populated. Moderately populated dis­tricts are found on the fringes of the densely settled regions.

The physical background to this pattern is fairly clear: the eastern plains and river valleys, including the North China Plain, the Chang Jiang (Yangtze) basin, the Sichuan (Szechwan) basin and the Xi Jiang (Si Kiang) basin, offer ideal conditions for agriculture, with adequate monsoon rainfall, good soils, flat land and water for irrigation from the large rivers.

As a re­sult rural population densities are sometimes as large as 1,000 ppsk (2,500 ppsm). During the long history of settlement in eastern China only the inherent rich­ness of the land has enabled the population to expand to such proportions. The long tradition of dense set­tlement has led to the development of many towns and cities which must originally have served as markets and administrative centres, but have now become in­dustrial centres.

The existence of sixteen or more cities with over a million inhabitants helps to raise population densities in the eastern region; but in terms of the total population urbanization is not very im­portant, for only about one-sixth of the population lives in towns.

In the surrounding uplands and foothills the poorer agricultural opportunities, poorer accessibility and dif­ficulties of irrigating the steep slopes have led to more moderate population densities. Moderate densities are also found in the more favoured areas of the generally negative western provinces.

In the interior provinces of Xinjiang (Sinkiang), Gansu (Kansu), Qinghai (Tsinghai), Tibet and Inner Mongolia, where densities are generally less than 1 ppsk (3 ppsm), physical factors such as a cold continental climate, aridity, high alti­tude and inaccessibility have militated against intensive agriculture. The best form of land use is some form of herding.

This extensive type of agriculture is practiced by the Tibetans, Uighurs, Kazaks, Mongols and Kirghiz who inhabit the area but does not support large num­bers of people. The region is, however, capable of greater development than has hitherto taken place.

The contrasts between China proper and the in­terior are not all due to physical factors however. The sparse population of the interior is partly the result of the traditional way of life of the herders, for in recent years the growing of crops and the exploitation of mineral resources has led to an increase in population density.

In the more densely peopled regions, too, so­cial factors have helped to create overpopulation. Peo­ple could have moved westwards into the empty areas and relieved pressure on the lowlands, but partly be­cause the people of China proper are of true Chinese or Han race while the outer territories are peopled by other ethnic groups, and partly because the unfamiliar conditions would have meant the evolution of new forms of agriculture, this has not taken place on a large scale.

Recently, however, planned colonization of the interior has been encouraged by the communist gov­ernment. Pressure on land in China proper would also have been less, had industrial development taken place earlier, causing many people to migrate to the towns. To some extent this occurred in the 1950s and early 1960s when emphasis was placed on industrial devel­opment.

Despite government attempts to reduce the ‘drift to the towns’ this inevitable movement from the overcrowded countryside continues. The present popu­lation distribution pattern of China is the result of a combination of physical, social, historical and eco­nomic factors.

Present changes are due to the breaking down of traditional attitudes and the rational planning of economic development but it remains to be seen whether this will significantly alter the long-established pattern.

(ii) Canada:

Canada also has marked dis­parities in its population distribution pattern. Over 90 per cent of its 23 million people live in a narrow belt not more than 320 km (200 miles) wide, immediately north of the U.S. border, leaving the vast Northlands practically uninhabited.

Even within the settled belt there are marked differences in population densities for the western coast, the Prairies and the Maritime Provinces are only moderately peopled while the St. Lawrence lowlands are more densely peopled.

The small total population of the country means, however, that nowhere are there the extremely high densities found in China. The main basis of this pattern is the physical background. The cold climate, permafrost, short growing season, rocky terrain and poor soils of the Northlands means that except in certain favoured areas, agriculture is not possible.

The Northlands do have some physical advantages, such as rich mineral resources, coniferous forests and swift-flowing rivers for the generation of H.E.P., but none of these need a large or permanently settled population for their ex­ploitation.

The only permanent inhabitants of the re­gion are Eskimos and certain Indian tribes, who have adapted their way of life to the harsh conditions and have traditionally, depended on hunting and fishing, neither of which supports a dense population.

The Northlands are not the only negative area as far as settlement is concerned; the Rocky Mountain ranges are also sparsely peopled. The climate in the moun­tains is severe, the slopes are steep and rocky and ac­cessibility is limited by the terrain. Only limited coastal areas and valleys are suitable for settlement and these support only a moderate population.

The Prairies have a moderately dense population because the main activity is agriculture. Extensive, highly mechanized farming does not offer employment opportunities to more than a moderate number of people.

The most densely settled parts of the Prairie provinces are those where mineral resources (oil and phosphates) offer some possibilities of industrial de­velopment, or where more intensive agriculture is pos­sible as in the Red River Valley.

The cool, foggy, damp climate of the Maritime Provinces, the hilly terrain and the limited agricultural lands are only suited to a moderate population den­sity, but the better conditions of the St. Lawrence lowlands lead to a denser settlement. The possibilities of more intensive agricultural development, good water communications, and land of moderate relief are the main physical advantages of the region.

Physical factors are not all-important, however, in determining Canada’s population distribution. Re­moteness from central services, and fear of loneliness play some part in keeping the Northlands empty. Similarly the distance of the Prairies from contacts with the rest of the world, limits the willingness of people to live there as well as hampering industrial growth for lack of markets. The eastern seaboard was the first area settled by European immigrants.

As the longest-settled part of the country it has the best social and cultural amenities. Its nearness to Europe allows traditional links with Britain and France to be main­tained as well as promoting trade and industry. Anoth­er reason for the concentration of settlement in the south-east of the country is the proximity of the U.S.A.’s industrial belt.

This has encouraged invest­ment and therefore industrial development and has led to a greater density of population, especially in and around the industrial centres of Toronto, Kingston, Montreal and Quebec. The Maritimes have not had the same advantage for they adjoin the northern New England states which themselves suffer from inaccessi­bility. Social factors also play an important role.

The population of Canada is descended mainly from immi­grants; about half from British and a third from French stock. Descendants of immigrants of other nationali­ties are far fewer in number. While the English-speaking Canadians are found throughout the country, the French are concentrated in Quebec and eastern On­tario.

This is mainly because they feel most at home in a French environment, where French is spoken, French language papers and French food are available. Because of this concentration, and the fact that most of the French Canadians are Catholics, the birth rate is high and this leads to a denser population. For these various reasons, therefore, the provinces of Quebec and Ontario have about two-thirds of the Canadian population.

(iii) Peninsular Malaysia:

It is not only large countries with a wide range of physical and climatic regions which have a marked disparity in population distribution. Peninsular Malaysia has far greater den­sities of population on its western coastlands than in other parts of the country. This is partly due to the far greater possibilities for agriculture on the west where the lowlands are broader than on the east.

In the north are the wide padi-lands of Kedah and Perlis, while far­ther south are undulating lowlands which were found ideal for the growing of export crops, especially rub­ber and oil palm. On the East Coast, however, the swampy coastal plain is narrower and gives way more rapidly to mountainous terrain, except in the north in a region around Kota Bharu and Kuala Trengganu where the lowlands are wider and support a high rural population growing rice, rubber and other crops.

The western lowlands proved ideal for colonial plantation development not only from a physical standpoint but also because of their proximity to the Strait of Malacca which has always been a major sea- route. Ports such as Malacca, Port Kelang and George Town provided outlets for the produce of the western coastlands.

Ports on the east coast did not have the advantage of facing such a major seaway. Population was expanded in the west by an influx of immigrant labourers for the plantations. Nowadays the West Coast is still favoured for agricultural development both in plantations and smallholdings because of the existing infrastructure of roads, market towns and ports.

The other important factor has been the exploita­tion of vast reserves of tin which occur largely in the western coastal plains. Here again immigrants came in to work the mines or came as traders to support and serve the mining communities.

Tin and rubber trading led to the establishment of far more market towns in western districts and these in turn have grown into ex­panding industrial and commercial centres. George Town, Ipoh and Kuala Lumpur alone house 15 per cent of the Peninsular Malaysian population.

Agriculture and fishing have led to a moderate popu­lation on the East Coast but the centre of the country, which is mountainous, forested and ill-provided with transport routes has few people and is far more diffi­cult and expensive to develop. Government policy is to help open up the land for settlement through settle­ment schemes such as that at Jengka Triangle but this will make little impact on overall population distribution.

(iv) Nigeria:

Nigeria has a very compli­cated pattern of population distribution, with three separate centres of dense population divided by regions of moderate or sparse settlement. This pattern is part­ly governed by physical factors, since the area of least dense population, known as the Middle Belt, coincides with a region of poor soils, low rainfall and inadequate groundwater supplies. The tsetse fly is also a great problem in this region.

The regions of dense popula­tion are those where climate, soils and terrain are more favourable, and where a wide variety of food and cash crops can be grown. In the south-east the main cash crop is oil palm, in the south-west cocoa and some oil palm, and in the north the main crops are cotton and groundnuts.

Areas of moderate population density tend to be found on the more marginal land on the fringes of the densely settled zones and in those parts of the sparsely settled zones which are better served by roads, railways or river transport and are thus more accessible.

Many other factors than those of climate and soil have contributed to the present pattern. Perhaps the most important is that each of the main centres of population is the chief area of settlement of one of the three main ethnic groups in Nigeria. The Ibos are con­centrated in the south-east, the Yorubas in the south­west, and the Muslim Hausa peoples in the north.

These are the three most successful and powerful groups and their numbers have increased more rapidly than those of smaller groups which were more subject to wars, slave raiding and general unrest. As a result of these ethnic differences and the separate development of the three groups, the detailed population distribu­tion differs from one densely settled region to another.

In the north the main centres of population are large, isolated towns such as Kano and Sokoto which have traditionally served as termini on the caravan routes of the Sahara. In the south-west, the towns are more con­centrated, forming an area of dense population includ­ing Ibadan, Oshogbo and Oyo; the rural population is also fairly dense. Lagos, the capital city, has grown rapidly by in-migration and is the centre of another densely settled region.

The south-eastern concentra­tion of population is characterized, however, by few large urban centres but by very high rural densities, reaching about 700 ppsk (1,500 ppsm) in some dis­tricts, and is thus more similar to densely settled rural areas in some Asian countries than to conditions in most parts of Africa. The south-east is also the region where major oil exploitation has taken place with as­sociated industrial development.

The Middle Belt, which represents a negative area for settlement has also been affected by factors other than those of terrain. Though poor, this region is in fact capable of greater economic development than has hitherto taken place. It could support more peo­ple, but its population was greatly reduced in the past by slave raiding by the more powerful tribes of the north and south. Some regions such as the Jos Plateau and the Niger Valley, which have mineral and agricul­tural potential are now being developed and are gain­ing population.

Many of the moderately settled areas on the fringes of densely settled regions could also support far more people. In some cases natural conditions in such areas are highly suitable to agriculture. However, people from the overcrowded regions have not moved into them because of traditional social attitudes and their wish to stay near friends, homes and existing cultural centres.

Recent government policy has encouraged a wider spread of settlement by developing transport, mineral resources, power supplies and agriculture in the regions still capable of supporting a larger popula­tion.

Essay # 4. Population Structure of the World:

Population structure is analysed in terms of age and sex groupings and is represented by population pyra­mids. By studying such diagrams it is possible to gain a clearer idea of the population characteristics of any given country.

In working-class families all the children could contribute to the family income. However, death rates were also very high be­cause epidemic diseases such as bubonic plague, chol­era and typhoid had not been brought under control and tuberculosis was also very common. Moreover low standards of hygiene and nutrition meant that infant mortality rates were also high. It was therefore neces­sary to have a large family so that at least some of the children would live.

During the nineteenth century great advances were made in medicine and the death rate began to fall, but the birth rate remained high so that the population expanded rapidly. During the twentieth century a different pattern has emerged.

The First World War and the Depression of the 1920s impressed upon people the difficulty of feeding, clothing and educating a large family of chil­dren. Children were no longer an economic asset, con­tributing their labour or wages to the family as they had done in the past. At the same time people wished to give their children a better education and better homes than they had had themselves. This led to a de­cline in the birth rate.

This trend was assisted by the fact that, with far better living conditions and health facilities, children had a much better chance of sur­vival. At first this trend was more apparent in the towns than in the country districts and in middle-class rather than in working-class families but it eventually affected the whole population. Birth rates dropped even further during the Second World War and though there was a post war ‘baby boom’ when the number of babies born was very large, the size of families re­mained small.

People live longer on an average and Britain therefore has an ageing population. The proportion of the population living to ages of 65 or more has doubled since the late nineteenth century. Britain’s death rate is slightly higher than that of Aus­tralia or the U.S.A. because of the large proportion of older people in the population.

The nicks in the pyra­mid at age groups 60—64 and 35—49 reflect the very low birth rates of the Depression and war years (1920s and 1939-45) while the bulge in the 10-20 year age groups indicates higher birth rates in the more hopeful economic conditions of the 1960s which has petered out with renewed economic difficulties in the late 1970s.

Britain’s population is now decreasing. People are unwilling to have many children who have to be supported through many years of education, and who thus restrict the money available for material comforts in the home or for leisure pursuits.

Other European countries have a similar population structure though there are minor differences. In West Germany for instance the birth rate is so low that the population is decreasing markedly and may drop from 57 million today to 52 million by the year 2000.

Some countries in Europe and elsewhere attempt to encour­age population growth by giving child allowances or tax relief to lessen the financial burden of larger fami­lies, e.g. in France. But in Spain and Ireland, where the Catholic Church forbids birth-control, birth rates are still high and the population still has a high pro­portion of young people and is growing.

Population structure in most Asian, African and Latin American countries is very different from that of Europe. Death rates have declined markedly in the twentieth century, though they are still a little higher than in Europe or North America because standards of hygiene, nutrition and disease control are lower.

The proportion of old people in the population is very small. The moderate decline in the death rate however has not been matched by a change in the birth rate which remains very high, so that the popu­lation contains many young people. The pyramids for most underdeveloped countries are even more broadly based than that of Britain in the nineteenth century.

In many of these countries it will take a long time to overcome the traditional attitudes and lack of know­ledge of family planning techniques though some countries such as India give great publicity and promi­nence to family planning. Few of the underdeveloped countries show any sign of a voluntary change to small­er families. Only in some of the most rapidly develop­ing countries, such as Singapore have birth rates de­clined rapidly.

Singapore is small and changes in birth rates affect the population quite quickly. Singapore has a policy of encouraging two children per family by imposing financial penalties on families with more than two children. Japan with 114,000,000 people and among the lowest death and infant-mortality rates in the world today has an interesting population history.

Until the early 1950s except for a nick in the male 30—45 age groups, caused by deaths during the Second World War, the pyramid resembled that of any other traditionally agricultural country. However the impact of industrialization, urbanism and a rising standard of living led to a decline in the birth rate and the pyramid is now ‘top-heavy’, though it still does not show the concentration in the middle and older age groups found in European countries.

The case of Japan illustrates the time-lag in changes in population structure, for though industrial develop­ment began in the late nineteenth century, it took fifty years for the effect to be felt in the population structure. Population structure in Japan now follows the European pattern.

Migration can have profound effects on population structure. This relates to Australia but in the 1950s and 1960s the U.S.A., Canada and New Zealand had a similar pattern. Immi­gration into these countries is much more restricted today. Immigrants are usually young people who have their families in their new country, encouraged by the better standards of living they find there.

The immi­grants themselves swell the population in the 30—45 age groups while their children help to increase the proportion of people under 20. When the rate of im­migration slows down the population becomes more stable. The U.S.A., for example, now has a declining birth rate. Immigration of large numbers of people of a different racial group often produces a temporary imbalance both in age and sex structure, because the bulk of immigrants are men, and also in racial com­position.

An age, sex pyramid divided by race for Peninsular Malaysia in 1931 illustrates this. Men out­number women in the middle age groups while a time lag between the bulk of Chinese and the bulk of Indian immigration is also seen.

Indian women came into the country mainly after the men. At this stage immigrants were not settling down to have families so the percen­tage of young Chinese and Indians in the population was smaller than that of Malays.

Migration not only affects the population structure of the receiving countries, but also that of the home countries of emigrants. Thus between 1850 and 1900 Ireland’s population was reduced from 8 to 4 million people by migration, about 90 per cent of which was to the U.S.A. Many young people left and the birth rate was drastically reduced. This migration has now slowed down and the population is beginning to as­sume a more normal pattern.

The sex structure of population is also important. The proportion of men to women affects the rate of population growth through the net reproduction ratio, which measures the rate at which the present genera­tion of women is being replaced by daughters who will in turn have children.

The calculation of this ratio allows forecasts of future population trends to be made. The numbers of men and women are usually fairly even but are sometimes out of balance after such events as wars, when more men than women are killed. The numbers are usually uneven in the higher age groups because women tend to live longer than men.

Essay # 5. Population Problems of Advanced Countries:

Underdeveloped countries do not have a monopoly of population problems, though in general their prob­lems are more widespread and more difficult to solve. It is, however, worthwhile to note the problems of in­dustrial and urbanized societies, some of which are becoming increasingly serious.

1. Ageing Population:

As the birth rate is low the proportion of younger people in the population is relatively small and the low death rate and high life expectancy mean that there is an ever-increasing pro­portion of older people in the population. Many retire from active work in their sixties and then become dependent on the working population. Provision of pensions and other facilities, e.g. extra health services, for elderly people pose financial problems.

2. Small Work Force:

As educational standards improve children remain longer at school and join the work force later. This, combined with the low birth rate, means that the labour force expands only slowly while industrial and other employment opportunities continue to multiply. Despite a high degree of mecha­nization in most industries many countries are short of workers.

In Europe for instance workers migrate from Italy, Greece, Yugoslavia and Turkey which are some­what overpopulated, to Germany and Switzerland where there are insufficient workers. Another problem is that the work force is generally well-educated and skilled and there is a shortage of unskilled workers. Because the majority of workers are skilled and the work force is relatively small wages are high.

3. Rural Depopulation:

Towns provide ameni­ties such as shops, entertainment and better social services, which cannot be matched in country districts, and employment is usually easier to find in urban areas. For this reason there is a steady movement of people from the country to the towns so that in some areas farms are even abandoned.

The fewer people live in the country the less economic it is to provide serv­ices and the greater becomes the disparity between town and country. Where rural depopulation is accom­panied by mechanization and rationalization of farm­ing and thus a rise in income, an improvement may result, but often the country districts suffer a decline in living standards.

4. Urbanization:

As towns expand, the pressure on transport, water supplies, sewage and refuse disposal grows and creates problems. Smoke and chemical ef­fluents from factories produce air and water pollution. Traffic congestion and noise are other problems.

Ten­sions created by urban life lead to a far higher incidence of mental illness than in underdeveloped countries, and pollution, particularly fumes from motor vehicles, also has physical health hazards. Urban sprawl is anoth­er problem; the expanding towns engulf land which would otherwise be suitable for agriculture and thus reduce self-sufficiency in many countries.

Underdeveloped and advanced countries have some problems in common, for most countries are unevenly developed. Most advanced countries have areas where agriculture or industry could be improved or where the population is too large. Similarly the underdeveloped countries all have large towns where the problems are similar to those of urbanized societies everywhere.

It is also important to bear in mind the differences be­tween underdeveloped countries. Some have a much better resource base or a smaller population, and these, such as Argentina, Mexico and Malaysia, are much more likely to be able to overcome their problems than countries with few resources and a large popula­tion with fixed traditional ideas.

Essay # 6 . Moderately Populated Areas of the World:

Around the margins of sparsely-populated areas the density of population gradually increases; only occa­sionally are low and high densities found side by side with no transition zone. The sharpest changes occur between the irrigated and non-irrigated areas in the deserts, the most notable example being the con­trast between the Nile Valley and the surrounding desert.

The moderately peopled regions of the world are usually those where agriculture is the dominant occu­pation. The climate, relief and soil are thus the main factors affecting population density; the more favour­able these conditions are, the more people the land can support. But human and economic factors such as communications and accessibility to markets also af­fect population patterns.

The moderately-peopled parts of the world are of four main types:

(i) Tropical Savannas:

The savanna areas have a very seasonal climate with summer rainfall and a natural vegetation of grass and scattered trees which are adapted to withstand the drought of the winter. Various types of extensive farming are practised. Ranching is important in the sertao of Brazil, in north­ern Australia and in many parts of Africa.

Shifting cultivation provides food crops for the scattered popu­lations in Brazil and Africa though some areas have been developed for the cultivation of cash crops, such as groundnuts, tobacco, sisal or pyrethrum, either on large estates or smallholdings. None of these occupa­tions supports a dense population.

(ii) Temperate Grasslands:

In temperate con­tinental areas there are broad stretches of grassland where the climate is relatively dry and most of the rain falls in summer. Temperatures are high in summer and very low in winter. The growing season is long enough for cereal cultivation but where there is insuf­ficient moisture ranching is the dominant occupation.

The largest grassland areas are in North America (the Prairies), U.S.S.R. (the Steppes), and Argentina (the Pampas), but parts of interior Australia and South Africa have similar conditions. The grasslands coincide with vast plains or with regions of undulating terrain and are thus ideal for large-scale, mechanized cereal cultivation, but neither this nor ranching supports a large population.

Both savannas and temperate grasslands are con­tinental in location and lack of communications and remoteness have helped to keep the population rela­tively small. The best developed areas are those with good lines of transport, e.g. Argentina. Settlement has often followed the building of railways, such as the Trans-Siberian or the Canadian Pacific.

(iii) Tropical Coastlands:

While the interiors of tropical countries are often not well developed, the more accessible tropical regions have been cleared of forest and are devoted to agriculture. Both food crops such as rice and maize and cash crops such as rubber, oil palm, cocoa and sugar-cane are important in the lowlands, while tea and coffee are grown in the high­lands.

Coastal areas are preferred since accessibility to the sea is an advantage to growers of these dominantly export crops. Many areas were cleared only in the nineteenth century and thus populations are not as large as those found in tropical countries with a long agricultural tradition.

(iv) Temperate Coastlands:

Temperate coast- lands have a moderate climate, with an adequate rain- fall and no great extremes of temperature, so that a very wide range of crops can be grown. Livestock also form an important part of the agricultural economy. Farming is well established and although farms are usually small in size, yields per hectare are high.

As a result the land can support fairly large numbers of people, and such areas as central and eastern Europe, central, southern and north-western U.S.A., south­eastern Australia, central Chile and along the Plate estuary in Argentina, therefore have a moderate to dense population.

Both tropical and temperate coastlands are more densely peopled than the continental interiors, partly because the climate is more favourable and partly be­cause communications and markets are better. The larger the population the faster it will grow and the greater will be the market for agricultural and other goods.

This in turn helps to promote improvements in farming practices and the production of larger crops. The more productive the land the more peo­ple it can support. Areas of moderate population grad­ually merge into more densely settled areas where intensive farming and the development of industry allow far more people to get a living from the land.

Essay # 7 . Densely Populated Areas of the World :

Only limited areas of the world have high densities of population and these have all the advantages of good climatic, soil and relief conditions, as well as re­sources of fuel and industrial raw materials. The largest populations also grow most rapidly so that, unless there is rapid out-migration, people tend to concen­trate in relatively restricted areas.

The development of urban areas with many people, markets, shops, en­tertainment and other facilities tend to attract people from the surrounding areas.

Densely populated regions fall into two main categories, those dependent mostly on agriculture and those dependent mostly on indus­try:

(i) Agriculture:

Some of the most densely peo­pled parts of the world rely basically on agriculture. Industry has been developed in these areas and there are many large towns but a large proportion of the population still lives and works on the land. These areas include the Nile Valley of Egypt, the river valleys and plains of mainland China, the Indo-Gangetic plain and western coastal plain of the Indian subcontinent, and the island of Java in Indonesia.

In these areas as many as 1,000-2,000 people may live on a square kilometre (3,000-4,000 per square mile) of land. This is only possible because climate, relief, soil and water supply in the regions are favourable. Egypt has a Medi­terranean type of climate which is suitable for many crops and the Nile waters have been harnessed to irri­gate the fields.

In India, too, the fertile alluvial soils of the plains, the availability of water for irrigation in the dry season, the regular rhythm of the monsoons and high temperatures all the year round, allow several crops to be grown each year.

In China warm summers, monsoon rainfall, irrigation, constant manuring of the soil, and the careful management of the land, all con­tribute to support a huge rural population. Java has a warm climate, heavy rainfall and rich volcanic soils.

These areas were always advantageous for settle­ment. The Nile, Indus and Huang He (Hwang Ho) val­leys were the centres of ancient civilizations and as agriculture developed large settled populations were built up. Numbers have continued to grow ever since but farming techniques have not been modernized at the same rate.

As the capacity of the land to provide food has been outstripped the people have become poorer. Farms are very small—often not more than half a hectare and although a wide variety of cash crops is grown the cultivation of food crops is more important. Rice is the main food crop and is supple­mented by vegetables; poultry are kept, and buffaloes, sheep and goats are important in Egypt, Indonesia and India, and pigs in China.

The pressure on land is continually increasing as more and more people must be fed from the same plot, and such large populations can only live off the land because the people are willing to subsist on a relatively meagre diet of little nutri­tional value. Overcrowding thus leads to poverty and a low standard of living which in turn makes moderni­zation difficult because people cannot afford to buy machinery or fertilizers.

Moreover the farms are often too small to use modern techniques efficiently. Farm­ing could be done much more effectively by fewer people working larger plots of land but there is as yet no alternative source of employment in the towns of these countries. Large-scale industry has only recently been established and may never be able to compensate for population problems which have existed for so long.

(ii) Industry:

The densely populated areas depen­dent on industry and urban development are Western Europe, north-eastern U.S.A., and Japan. These areas are less extensive than densely peopled agricultural areas and are radically different, for most of the peo­ple live in large towns and few in the country.

The food for these large centres of population is not pro­duced locally but drawn from all over the world, so they are much more dependent on industry, trade and commerce. Unlike densely peopled agricultural areas they have a generally high standard of living and rather than getting poorer they are becoming richer as new techniques and ideas create greater employment op­portunities.

However problems of traffic, noise, pollu­tion, disposal of waste and provision of water supplies become greater as towns expand, and as the standard of living improves, health, education, recreation and other amenities must be provided at greater and great­er cost. Large urban centres attract ever larger popu­lations by in-migration, for while improved agricultural methods mean that fewer people are needed in the country, employment opportunities are much greater in the cities.

The three areas of high urban population differ from one another for historical reasons. The Industrial Revolution first took place in Britain where industrial­ization coincided with a phase of rural depopulation, caused by changes in land tenure, which provided workers for the factories in the towns.

At this time too, medical advances brought down the death rate and thus the population began to expand rapidly so that a large urban labour force was available through­out the nineteenth century. Mineral resources such as coal and iron were also available and trading relation­ships with other countries were already well-established so that raw materials could be obtained and goods marketed all over the world.

Industrialization spread to Belgium, northern France and later to Ger­many, but in these countries agricultural reform did not take place as early as in England and there is still a relatively large agricultural population.

The industrial district of the U.S.A. is an offshoot of the European region. Immigrants from Europe brought their knowledge and skill in industry to the new country, where the huge resources of coal, oil, iron, copper and many other raw materials allowed industry to develop rapidly. Large industrial towns and cities were already established before the whole country was settled.

Japan was traditionally an agricultural nation with a large rural population similar to that of China, and had little contact with other countries. In the late nineteenth century, however, this isolation was broken down and the advantages of industry were realized. Many circumstances aided the growth of Japanese in­dustry and its already large population was transformed from an agricultural to an urban one.

In this Japan differs from other industrial regions where the growth of population occurred at the same time as the growth of industry. As a result the popu­lation pattern in Japan is different; 13 per cent of the people still depend on agriculture as compared with only 2 per cent in Britain for example.

Essay # 8 . Problems of Overpopulation across the World :

There are underdeveloped countries where the level of technological development inhibits agricultural effi­ciency and the establishment of industry even though the resources exist in the country. Such countries have additional problems if they are overpopulated like China or India. In these countries the modern indus­trial economy has been grafted on to a traditional agricultural one and the two have not yet been proper­ly balanced.

Another group of countries which are underdeveloped are those which lack population, al­though they sometimes have advanced societies and command modern technological methods. These coun­tries, such as Brazil, Colombia, Peru, Zaire, or Asiatic U.S.S.R., have tremendous resources which cannot be fully developed because of lack of population.

Their problems are often accentuated by adverse climatic conditions. Population problems are thus among the basic difficulties of underdeveloped countries but those of overpopulation are of course different from those of under-population.

(i) Rapid Population Growth:

Large popula­tions increase rapidly and in most underdeveloped countries the birth rate is high and family planning is not practiced on a large scale. This means that there is a large proportion of young people in the population who are dependent on the relatively small working section of the population. At the same time the large number of young people puts extra strain on social services, especially education.

(ii) Unemployment:

In many underdeveloped countries industry is not well-established and there are few employment opportunities for unskilled work­ers. Unemployment is therefore high. On the other hand there is often a shortage of skilled workers be­cause there are few facilities for training.

In overpopulated rural areas unemployment or under-employment is also a major problem; people migrate to the towns where it is often even more difficult to find work. Moreover the towns become overcrowded, making living conditions poorer.

(iii) Housing and Health:

The standard of living in overpopulated countries is low and housing condi­tions are often poor and overcrowded. Standards of hygiene and nutrition are also low which leads to health problems such as malnutrition, and the spread of dis­eases. Prevention and cure of disease is hampered by insanitary conditions, by the ignorance of the people, by the lack of financial resources and often by the sheer numbers of people involved.

(iv) Under-Utilization of Agricultural Re­sources:

Traditional methods of agriculture, out­dated or inadequate equipment, lack of financial re­sources for improving farms, the non-use of fertilizer and the non-use or misuse of marginal agricultural land, such as highlands, may all help to keep agricultural production much lower than its potential. Difficulties of rationalizing farming techniques and reforming land tenure to give larger, more economic farms are aggra­vated by lack of capital and by traditional atti­tudes of the farmers who are often slow to accept new ideas.

(v) Slow Growth of Industry:

In most under­developed countries industry is only slowly becoming established. Apart from lack of local capital which makes the actual exploitation of resources or setting- up of factories difficult, the population factors are important. The labour force, though large in number is generally unskilled and has no background of indus­trial employment.

Similarly, although the large popu­lation should provide a good market for the finished goods, the majority of the people are poor and cannot afford to buy the products. To produce goods cheaply for a small market mechanized manufacture is most economical but this employs very few workers and does not help the employment situation.

(vi) Traditional Attitudes:

Traditional or reli­gious attitudes may militate against change or may make conditions worse. Birth-control is forbidden by the Catholic Church, for instance, and caste restric­tions on occupations in India also help to slow down development. Less important is the conservatism of rural people regarding farming methods and the intro­duction of new crops. This kind of attitude can be removed by education in a way that religious beliefs cannot.

Essay # 9 . Problems of Under-Population across the World :

(i) uneven distribution of population :.

Average population densities for under-populated coun­tries are low, and in many areas there are practically no people at all. Small populations increase slowly, even though birth rates are often high. Immigration is an important source of people but it is usually to the towns rather than to the country that new immigrants go.

At the same time the towns with their better con­ditions attract people from the already sparsely settled countryside. Imbalance between town and country is a major problem of under-populated countries.

(ii) Remoteness:

It is difficult to increase settle­ment in sparsely populated areas because people are unwilling to forego the amenities of the town. Where there are few people it is uneconomic to provide elab­orate communications, health, education or other facilities. This in turn increases the unwillingness of people to settle in such areas.

(iii) Under-Utilization of Resources:

Lack of population makes it difficult for a country to de­velop its resources to the full. Minerals will usually be extracted, especially precious metals and petroleum, because the desire for wealth will overcome other con­siderations. Agricultural resources are more difficult to develop because they require more and harder work over a long period of years before they show a good return.

In the nineteenth century when the U.S.A. was settled people were prepared to develop the land be­cause many of them were landless peasants, but immigrants to under-populated countries today generally prefer town life.

(iv) Slow Growth of Industry:

The growth of industry is often slow in under-populated countries because there is a shortage of labour, especially skilled labour, e.g. in the South American and African coun­tries. Where skilled labour has to be brought in this raises the cost of industrial development. Moreover the small population does not always provide an adequate market even where the standard of living is high.

(v) Climatic Problems:

Many under-populated countries have hostile climatic or relief conditions which make settlement difficult or dangerous for im­migrants. Such conditions obstruct development and are likely never to be fully overcome.

Are there any solutions to the problems of under­developed countries? In terms of economics the major need is for an infusion of capital, probably in the form of foreign aid, to finance development. In terms of population the need is for a decline in birth rates in overpopulated countries, but progress towards this end is extremely slow so that the improvement of agricul­ture, establishment of industry and extension of edu­cational, health and other facilities will in the long run be more important in solving overpopulation by mak­ing better use of available resources.

In under-populated countries immigration might be increased but this could only work if immigrants possessed the right skills and were prepared to live in the sparsely populated areas. To open up under-populated areas is both diffi­cult and expensive and thus economic factors are again paramount.

Essay # 10 . Views of Malthus on World Overpopulation:

Thomas Malthus was an English clergyman who, in 1798, published an Essay on the Principle of Popu­lation in which he put forward the view that, ‘the power of population is indefinitely greater than the power of the earth to produce subsistence for man’. He thought that a balance could only be maintained if famine, disease or war periodically increased the death rate and reduced population growth.

His pessimistic ideas were accepted by several other nineteenth-century scholars in England and France and many people still hold similar views today. Is this pessimistic view really justified?

In the first place it is important to realize the context of Malthus’ work. He was not considering the world as a whole but only England. Moreover he wrote almost 200 years ago when conditions certainly justified some of his conclusions.

At the end of the eighteenth century the popu­lation of England was only about 10 million, but much of their food supply had to be produced from the limited agricultural land of the country. The Agricultural Revolution of the late eighteenth cen­tury had brought about many improvements, but farming methods and crop yields were still much lower than they are today.

Changes in land tenure, brought about by enclosure of the old common fields and the formation of large farms in the place of small scattered plots, led to rural depopulation. The towns, especially those where the new factory industries had been established, grew very rapidly and were overcrowded, dirty and unhealthy. The people who lived in them were poor, under-fed, overworked and had little resistance to disease.

Thus, had food supplies been reduced or popula­tion expanded too rapidly, these people would have suffered and starvation and epidemics would have reduced the population. This had already hap­pened twice during England’s history; the Black Death of the fourteenth century and the Great Plague of the seventeenth century coincided with periods when harvests were bad and there were food shortages. Hunger reduced resistance to dis­eases and bubonic plague caused the death of many thousands of people.

Malthus was afraid that something similar would happen again. In his time great advances were being made in the treatment and control of diseases such as cholera, typhoid and smallpox which were still rife in England and Europe. This meant that death rates, and particularly infant mortality rates, were falling.

Malthus calculated that population could double every 25 years, but no similar increases in food supplies could be expected. Given the social conditions of the time it was not therefore surpris­ing that his predictions should be pessimistic. He could not have foreseen the tremendous changes which were to take place in the nineteenth and twentieth centuries.

These changes completely altered the economic and social conditions in Britain and Europe:

1. Great improvements have taken place in agri­cultural production as a result of better farm man­agement, increased use of fertilizers and pesticides, use of better seeds and livestock breeds, application of soil-conservation methods and so on. These im­provements led to considerable increases in the yields of most agricultural products and also allow­ed hitherto unusable land to be brought into profit­able use.

2. During the nineteenth century vast new agri­cultural regions in America, Africa and Australasia were opened up and large-scale plantation agricul­ture was established in tropical countries. Improve­ments in transportation not only allowed migrants to reach new areas and bring them into production, but also meant that their crops could be easily transported to Britain and Europe to supplement local food supplies.

3. The population did not expand anything like as fast as Malthus predicted. The rate of increase declined largely as a result of a decreasing birth rate although death rates continued to fall. Improved standards of living, the costs of maintaining a large family and especially the difficulties of the depres­sion and the two World Wars in the first half of the twentieth century all contributed to the trend to­wards smaller families and a slower rate of popula­tion growth.

Thus, in Europe at least, Malthus’ predictions were proved wrong by events. But many people still apply his ideas to underdeveloped countries, where advances in agriculture are slower and population growth much more rapid. Death rates in many un­derdeveloped countries have been reduced but can still be lowered considerably.

In some ways this gives these countries a breathing space for if current high birth rates were combined with the low death rates of advanced countries, populations would ex­pand so rapidly that it would indeed be impossible to feed them. On this basis, for instance, India’s population could be trebled in less than 50 years.

Death rates are linked with levels of hygiene, nutri­tion and housing and will fall as Living standards improve. Fortunately these improvements are grad­ually taking place. The question remains-when death rates reach their lowest level, will a propor­tional reduction have occurred in birth rates?

There are several reasons to hope that the future of underdeveloped countries is not as bleak as it seems:

1. Rapid and efficient means of transportation have benefited not only Europe but the rest of the world. Thus if there is famine in one area food sup­plies can usually be brought in from elsewhere.

2. On a world scale there is no real food short­age and in many fields, such as livestock and dairy products, output could be greatly expanded in a very short time. But financial considerations pre­vent poor countries from purchasing as much food as they need or could absorb. Thus huge surpluses of wheat, for example, cannot be sold to the coun­tries which need them most.

Other food crops such as coffee, tea and sugar, of which surpluses are often produced, cannot be sold in underdeveloped countries because incomes are low and therefore demand is low. The lack of an effective market is also the chief obstacle to the production and sale of highly nutritious meat and dairy produce.

Thus the problem is not one of food shortage but of economic inequality. This inequality is, how­ever, gradually being reduced by the development of natural resources, agriculture and industries in underdeveloped countries, which in turn earns for­eign exchange and provides them with the financial resources for further development.

Such improve­ments in agriculture and industry should eventually improve incomes and standards of living and allow people in underdeveloped countries to obtain more and better foods.

3. Tremendous advances have been made in agriculture in underdeveloped countries which, with foreign aid and technical advice, are growing more staple crops and are introducing more nutritious crops not previously grown. Research into plant varieties has produced improved hybrids which have greater resistance to disease, greater tolerance to unfavourable climatic conditions and give much higher yields.

The most important achievements have been in producing ‘miracle’ rice strains. IR8 and IR15 grown in the Philippines, turned that country from a rice importer to a rice exporter in the course of a few years. Moreover the nutritional value of rice has been improved in certain recently developed strains.

4. Education in underdeveloped countries is being steadily improved and is gradually reaching a larger and larger proportion of the population. In the long term education has a tremendously impor­tant role to play in the fields of agriculture, techni­cal training to equip people for industrial employ­ment and in spreading the idea of family planning.

All these changes in underdeveloped countries are gradual and the real test of Malthusian views of population and food supplies will depend upon the speed with which these countries can be modernized and the rate at which improvements in living stand­ards affect birth rates.

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Essay , Human Geography , World , Population , Essay on World Population

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Essay on Population for Students and Children

500+ words essay on population.

Population refers to the total number of beings living in a particular area. Population helps us get an estimate of the number of beings and how to act accordingly. For instance, if we know the particular population of a city, we can estimate the number of resources it needs. Similarly, we can do the same for animals. If we look at the human population, we see how it is becoming a cause of concern. In particular, the third world countries suffer the most from population explosion. As it is the resources there are limited and the ever-increasing population just makes it worse. On the other hand, there is a problem of low population in many regions.

India population crisis

India faces a major population crisis due to the growing population. If we were to estimate, we can say that almost 17% of the population of the world lives in India alone. India ranks second in the list of most populated countries.

Furthermore, India is also one of the countries with low literacy rates. This factor contributes largely to the population explosion in India. It is usually seen that the illiterate and poor classes have a greater number of children. This happens mainly because they do not have sufficient knowledge about birth control methods . In addition, more people in a family are equals to more helping hands. This means they have better chances of earning.

Moreover, we also see how these classes practice early marriage. This makes it one of the major reasons for a greater population. People marry off their young daughters to men way older than them for money or to get free from their responsibility. The young girl bears children from an early age and continues to do so for a long time.

As India is facing a shortage of resources, the population crisis just adds on to the problem. It makes it quite hard for every citizen to get an equal share of resources. This makes the poor poorer and the rich richer.

Get the huge list of more than 500 Essay Topics and Ideas

Impact of Population Explosion

Subsequently, pollution levels are on the rise because of the population explosion. As more and more humans are purchasing automobiles, our air is getting polluted. Moreover, the increased need calls for faster rates of industrialization. These industries pollute our water and lands, harming and degrading our quality of life.

In addition, our climate is also facing drastic changes because of human activities. Climate change is real and it is happening. It is impacting our lives very harmfully and must be monitored now. Global warming which occurs mostly due to activities by humans is one of the factors for climate change.

Humans are still able to withstand the climate and adapt accordingly, but animals cannot. This is why wildlife is getting extinct as well.

In other words, man always thinks about his well-being and becomes selfish. He overlooks the impact he is creating on the surroundings. If the population rates continue to rise at this rate, then we won’t be able to survive for long. As with this population growth comes harmful consequences. Therefore, we must take measures to control the population.

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Population density

About this data, related research and writing.

Which countries are most densely populated?

The map we need if we want to think about how global living conditions are changing

Explore charts that include this data, sources and processing, this data is based on the following sources, pbl netherlands environmental assessment agency – history database of the global environment.

This database presents an update and expansion of the History Database of the Global Environment (HYDE, v 3.3) and replaces former HYDE 3.2 version from 2017. HYDE is and internally consistent combination of updated historical population estimates and land use. Categories include cropland, with a new distinction into irrigated and rain fed crops (other than rice) and irrigated and rain fed rice. Also grazing lands are provided, divided into more intensively used pasture, converted rangeland and non-converted natural (less intensively used) rangeland. Population is represented by maps of total, urban, rural population and population density as well as built-up area. The period covered is 10 000 BCE to 2023 CE. Spatial resolution is 5 arc minutes (approx. 85 km2 at the equator), the files are in ESRI ASCII grid format.

Gapminder – Population

United nations – world population prospects.

World Population Prospects 2024 is the 28th edition of the official estimates and projections of the global population that have been published by the United Nations since 1951. The estimates are based on all available sources of data on population size and levels of fertility, mortality and international migration for 237 countries or areas. More details at https://population.un.org/wpp/Publications/ .

Gapminder – Systema Globalis

Food and agriculture organization of the united nations – land, inputs and sustainability: land use.

The FAOSTAT Land Use domain contains data on forty-four categories of land use, irrigation and agricultural practices and five indicators relevant to monitor agriculture, forestry and fisheries activities at national, regional and global level.

Data are available by country and year, with global coverage and annual updates.

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All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.

At the link below you can find a detailed description of the structure of our data pipeline, including links to all the code used to prepare data across Our World in Data.

Notes on our processing step for this indicator

We have estimated the population density by using population estimates from multiple sources and land area estimates by the Food and Agriculture Organization of the United Nations.

We obtain it by dividing the population estimates by the land area estimates.

The population data is constructed by combining data from multiple sources:

10,000 BCE - 1799: Historical estimates by HYDE (v3.3).

1800 - 1949: Historical estimates by Gapminder (v7).

1950-2023: Population records by the UN World Population Prospects (2024 revision).

2024-2100: Projections based on Medium variant by the UN World Population Prospects (2024 revision).

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Population Growth and Economic Development: Policy Questions (1986)

Chapter: conclusion.

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Conclusion We have examined a diverse set of mechanisms through which population growth affects economic development. This chapter opens with a review and synthesis of our conclusions on the expected effects of a decline in the population grown rate that works through these mechanisms. It then proceeds to a discussion of how environmental and institutional contexts mediate the actions of these mechanisms a major theme of this report. The final section discusses policy implications. EFFECTS OF SLOWER POPULATION GROWTH ON ECONOMIC DEVELOPMENT Following the framework set up in the Introduction, we consider how conditions are likely to differ if a country, through a government program, were to achieve and maintain lower fertilibr than it would otherwise have experienced (with constant mortality). As noted above, such a decline would produce at every subsequent point slower population growth, smaller population size, lower population density, and an older age structure. Working through these direct demographic effects, a reduced level of fertility is also likely to produce several other changes. Slower Population Growth and Exhaustible Resources Globally slower population growth may delay the time at which a particular stage of depletion of an exhaustible resource is reached. This effect does not necessarily increase the number of people who will have access to 85

86 POPUW7ON GROWTH AND ECONOMIC DEVELOPMENT that resource; rather, it moves the consumption stream further from the present. But it is important to recognize that no single exhaustible resource is essential or irreplaceable; it is valued for its economic contribution, not for its own sake. As easily accessible reserves of natural resources are exhausted, the real cost of extraction, and hence the resource pace, rises. This price rise should stimulate the search for alternative materials. Historically, these adaptive strategies have been extremely successful. To the extent that slower population growth results in a slower rate of resource depletion, these adaptive strategies will also occur more slowly. Hence, it seems unlikely that slower population growth will allow a larger number of people, over future generations, to enjoy a given standard of living thanks to lower natural resource prices. Slower Population Growth and Renewable Resources Slower population growth, in some cases nationally and in others globally, is likely to lead to a reduced rate of degradation of renewable common- property resources such as air, water, and species of plants and animals. If significant amounts of land and forest resources are held in common in a country, they will also tend to be degraded less rapidly. These effects are likely to be more evident in the short run-in say, a decade or two. In the long run, population growth itself might create greater incentives to develop the social and political institutions necessary for conservation. Such incentives are irrelevant, of course, if the resource has become depleted beyond the point of restoration. Moreover, changes are costly and the need to bear such costs is itself a consequence of population growth. Slower Population Growth, Health, and Education Lower fertility is likely to raise average per child levels of household expenditure on health and education and thereby improve levels of child health and education. By themselves, such changes should result in a more productive labor force. Superimposed on these within-family effects is the possibility that lower fertility will alter the distribution of children among families by income class. If fertility declines are largest among high- income families, average levels of schooling and health among children could actually decrease despite an absolute improvement in measures of well-being among poor families. But if family planning programs result in larger fertilibr reductions among poorer families, the within-family gains will be accentuated at the societal level. Slower population growth is likely to raise public expenditures on schooling per school-aged child. Evidence from the educational literature suggests that

CONCLUSION 87 such a result may lead to some improvement in educational quality as measured, for example, by test scores. We do not find convincing evidence that lower fertility will result in faster growth in enrollment ratios (apart from within-family effects). Slower Population Growth and Income Unless a fertility decline is concentrated among high-income families, it is likely to lead to a reduction in income disparities among social classes. This is primarily a long-term effect (although a variety of short-tenn effects are also possible) and wows primarily by raising payments to labor relative to payments to capital and raising payments to unskilled labor relative to skilled labor. We have found little evidence that the aggregate savings rate depends on growth rates or the age structure of a population. Assuming that the savings rate remains unchanged, a fertility decline will lead to an increase in the ratio of capital to labor and, along with it, labor productivity, wages, and per capita income. The increase in the capitalllabor ratio will reduce rates of ran to capital and reduce payments to owners of capital. In the short run, more land per agricultural worker is likely to raise labor productivity in agriculture. Long-term effects may differ because of changes in the organization and techniques of production that are induced by the relative change in factor availability. These effects may reduce the short- term gains of slower growth. Slower Population Growth and Cities Win slower population growth, cities grow more slowly, both in the short and long run. Natural increase (~e excess of birds over deaths) accounts for about 60 percent of city growth today in developing countnes, and it is reasonable to expect that a decline in fertilizer levels will entail a decline in rates of natural increase in cities. Such changes reduce the demand for urban infras~uctural investments while eventually reducing the revenue base that supports such investments. The evidence on Chewer reduced national fertility levels reduce the rate of rural-url~an migration, and hence reduce He rate of grown of He proportion of He population that is urban, is unclear. A reduced rate of urban labor force grown in developing countries (most of which is a product of natural increase among the urban population) is not likely to be systematically accompanied by corresponding reductions in joblessness. However, it may increase He proportion of He urban labor force working in high-wage jobs in the modern sector of the economy and reduce He proportion working in the low-wage, infonnal sector.

88 POP CLARION GROWN AND ECONOMIC DEVEL()PMENT ENVIRONMENTAL AND INSTITUTIONAL CONTEXTS It is clear that the economic advantages of fertility reduction will vary from place to place. Environmental and climatic conditions clearly shape the local impact of population growth. In countries such as Bangladesh, where ratios of agricultural labor to arable land are already very high, there is a presumptive case that labor productivity in agriculture will decline more rapidly with added labor than if ratios were low. Nonagricultural production possibilities, and the opportunities for trade, also affect the importance of these natural features. Important as these natural features may be in conditioning the economic response to population growth, Hey appear to be far less important than conditions created by people. Many of the initial effects of population growth are negative, but they can be ameliorated or even reversed in the long run if institutional adjustment mechanisms are in place. Among the most important of such mechanisms are property rights in land and properly functioning markets for labor, capital, and goods. Such markets permit the initial effects of population growth to be registered in the fonn of price changes, which can trigger a variety of adjustments, including the introduction of other factors of production that have become more valuable as a result of the increase in population; a search for substitutes for increasingly scarce factors of production; intensified research to find production processes better suited to the new conditions; reallocation of resources toward sectors (e.g., food production) in which demand may be most responsive to population change; and so on. Of course, these adjustments may entail real costs, even when these are minimized by efficient institutions. When markets function very poorly, or do not exist, adjustments to population change are likely to be slower or to not occur at all. These are not merely theoretical notions. Some part of the current distress in Ethiopia, of the loss of 30 million lives during China's '~great leap forward" (Ashton et al., 1984), and of the problems of food production in tropical Africa during the 1970s was due to very badly functioning markets combined with rapid population grown. Even efficient markets do not guarantee desirable outcomes. The famines of 1942-1943 in Bengal and of 1973-1974 in Bangladesh seem to have been principally a result of deterioration in the income distribution-in particular, the loss of purchasing power by unskilled wage laborers-combined with speculative hoarding in food markets (See, 1981~. This kind of outcome underscores the role of the distribution of wealth and of human capital as a fundamental determinant of poverty. The potential value of government intervention for market regulation and for purposes of income distribution is widely acknowledged. Govemment policies in a variety of arenas clearly play important roles in mediating Me

CONCLUSION 89 impact of population growth. Effects of population growth on educational enrollment and quality, on rates of exploitation of common property resources, on the development of social and economic infrastructure, on urbanization, and on research activities are all heavily dependent on existing government policies and their adaptiveness to changed conditions. In short, the effects of rapid population growth are likely to be conditioned by the quality of markets, the nature of government policies, and features of the natural environment. Since the effects are so dependent on these conditions, a reliable assessment of many of the net effects of population growth can best be carried out at the national level, although some issues concerning the environment and resources can only be analyzed globally. It is of interest to briefly examine and contrast Me interplay between population grown and institutions in two important areas, China and tropical Africa. China, with its extremely low arable landlpopulation ratio, is often seen as greatly in need of population control policies in order to boost per capita agricultural income; this view is reflected in the government's severe disincentives for large families. Although it is possible Mat the resultant decline in the population growth rate has somewhat increased per capita agricultural income, these gains are probably small compared with those from agricultural reforms instituted in 1979. Over the period 1979-1984, the real per capita income of Me rural population increased 15 percent annually, and total agricultural output increased 51 percent (U.S. Department of Agriculture, 1985; Li, 1985~. In contrast, tropical Africa has a comparatively high land/population ratio, but appears to be particularly vulnerable to problems induced by population grown. Political independence and He forces of modernization came to tropical Africa later than to other areas. Although some countries in other regions also share these traits, markets are generally least well developed in tropical Africa, political factionalism is greatest, and human resource potential is least developed. In parts of Africa, sparseness of population itself may be responsible for some of these difficulties, but this explanation is implausible for such countries as Ethiopia or Kenya Obviously, slowing population growth is not a substitute for solving other problems, but it can reduce some of the more extreme manifestations of these problems while they are being solved. SUMMARY Population growth can, and often does, trigger market reactions. Many of these reactions move a country in a '`modem" direction, that is, toward better~efined properq rights, larger integrated marked, more agocultum1 research, and so on. However, He market-induced adjustments to higher

go POP ULA77ON GROWTH AND ECONOMIC DEVELOPMENT growth do not appear to be large enough to offset the negative effects on per capita income of higher ratios of labor to other factors of production. Nor is population growth necessary to achieve these forms of modernization: the fact that rates of return to agricultural research are already extremely high-in bow developing and developed countnes-implies Mat Here is little need for additional stimulus from population growth; the evolution of property rights is stimulated by many factors~population grown being only one among Rem (Binswanger and Pingali, 1984~; and the scope of many markets can be enlarged by removing made barriers. That these over devices exist does not imply a minimal role for population grown, but it does caution against advocacy of growth as the only way to achieve them. On balance, we reach the qualitative conclusion Cat slower population growth would be beneficial to economic development for most developing counties. A rigorous quantitative assessment of these benefits is difficult and context dependent. Since we have stressed the role of slower population growth in raising per capita human and physical capital, it is instructive to use as a benchmark the effects of changes in the ratio of physical capital per person. A simple mode} suggests that the effect is comparatively modest. Using a typical labor coefficient of 0.5 in estimated production functions, a 1 percent reduction in the me of labor force growth would boost the grown of per capita income by 0.5 percent per year. ~us, after 30 years, a 1 percent reduction in the annual rate of population grown (produced, say, by a decline in Be crude bird rate from 37 to 27 per 1,0003 will have raised production and income per capita to a level 16 percent above what it would otherwise have been. This would be a substantial gain, but by no means enough to vault a typical developing country into Be ranks of the developed. This simple calculation, however, does not fully reflect the complexity of Be linkages between population growth and economic development. For instance, the production function would be expected to change in ways that reduce the advantages of slower population grown. We have reviewed considerable evidence, particularly in the agricultural sector, of how technology adapts to changes in factor proportions. In most places it is reasonable to expect slower growth in the labor force to reduce the intensity of adaptive response in the form of land improvement, instigation, and agricultural research. On the other hand, the calculation does not reflect increases in production due to the healthier and better educated work force Mat would result from lower fertility. Much more sophisticated models of production and fertility have been constructed with a variety of assumptions about the nature and intensity of relationships between economic and demograph* variables (see Ahlburg, 1985, for a thorough review). None of these models embodies the more

CONCLUSION 91 recent evidence on the nature and magnitude of effects that is included here, and we are not in a position to endorse any of the models. Careful scientific research is needed both to beuer quantify and to further elucidate most of the relationships discussed in this book. Research is especially needed on urbanization and the consequences of urban growth; savings and the formation of physical capital; the effect of population grown on health, education, and the development of human capital; and the nature and extent of extemalities of childbearing. Such research would be appropriately supported by mission-oriented development organizations as well as by basic research agencies. Whether the economic problems posed by population grown are large or small, and whether they are best approached by slowing the population grown rate, depends ultimately on the costs of alternative policy responses. We now turn to outline those responses. POLICY IMPLICATIONS: THE ROLE OF FAMILY PLANNING We have stressed that population growth can exacerbate the ill effects of a variety of inefficient policies, such as urban bias in the provision of infrastructure, direct and indirect food subsidies Hat distort agricultural markets, credit market distortions, and inadequate management of common property. A fundamental solution to these problems lies in better policies outside the population arena. However, some policies may be extremely resistant to correction, even over the medium to long term. Moreover, we have found some beneficial effects of slower population grown even in the presence of well-functioning markets and other institutions. Thus, there appears to be a legitimate role for population policy, providing its benefits exceed its costs. Although educational and health policies may have indirect effects on fertility, family planning programs have been the most conventional and direct instrument of government population policy. By family planning programs, we mean He provision of contraceptive services, together with information about contraception and child spacing. The total amount spent on family planning programs in 1982 was less than $2 billion, of which international assistance represents about $330 million (World Bank, 1984:148~. By companson, total official development assistance by Organization for Economic Cooperation and Development (OECD) countries was about $27.5 billion in 1983 Should Bank, 1984:252~. In most developing countries, family planning program expenditures represent less than 1 percent of the government budget. Government support for family planning programs can have an economic and social rationale quite apart from He effect of programs on rates of population growth. ~ many societies, individual control of reproduction

92 POPUlA77ON GROWIW AND ECONOMIC DEVELOPMENT is considered a basic human right, similar in nature to good health or literacy. Lack of information about reproduction services and other services may constrain parents from achieving the* desired number and spacing of children. In such a situation, the supply of information and services will increase family welfare. Govemments can often supply information and services about reproduction more efficiently and cheaply than Me private sector, in part because large and risky investments are required and because some of Me benefits to consumers cannot be captured by the suppliers. In particular, valuable information can flow from person to person without any financial reward to the initial supplier: information about the consequences of childbearing is one example; the rhythm method is another. In this case, the private sector will underinvest in the provision of such services. The rationale for government support for family planning programs is similar to that for support of a variety of public health programs, as well as for agricultural research and extension services. F~ermore, when health services are provided by government, an additional rationale for government family planning programs is that the services can be efficiently supplied by existing health pet sonnet (World Bank, 1984~. Finally, family planning programs are likely to be of more value to lower income groups than to higher income groups, who may have beKer access to private services, so government support for these programs can help to advance equity goals If people use the services and information supplied by government family planning programs and if fertility falls as a result, an obvious case can be made that the program has increased the private welfare of users by reducing the cost of fertility control and by reducing the gap between desired and achieved fertility. This gain in private well-being is added to whatever other gains accrue on the national agenda from fertility reduction. The large fertility declines that occ~d in such countries as Mexico, Indonesia, and Thailand during the 1970s~eclines that were associated over time with intensified national family planning programs-suggest that private welfare gains from such programs are large. The large amount of unwanted childbearing in developing countries Mat was revealed by the World Fertility Survey (Boulder, 1985) suggests that such programs have considerable remaining potential to increase private welfare and reduce population growth rates. When national economic and social goals can be furthered by a reduction in fertilibr, the fact that family planning programs can achieve such reductions while increasing the well-being of users of these services accounts for milch of their Inactiveness as a policy instrument for governments in developing countries. A similar att~veness applies to removal of legal prohibitions against access to means of ferdlity control, prohibitions that pose serious obstacles to couples, reproductive behavior in many counties (Berelson and Lieberson, l979~. In sum, there is little debate about the desirability of

CONCLUSION 93 programs Hat allow couples access to easy, affordable, and effective means of family planning, even among Hose who see population growth as a neuter or even a positive influence on development (Wattenberg and Zinsmeister, 1985). When a couple's childbearing decision imposes external costs on other families-in overexploitation of common resources, congestion of public services, or contribution to a socially undesirable distribution of income- a case may be made for policies that go "beyond family planning." Such policies include persuasive campaigns to change family size norms and combinations of incentives and taxes related to family size. It is more difficult to make the case for He imposition of drastic financial or legal restrictions on childbearing. As noted above, such restrictions are likely to entail large welfare losses at the individual level; these losses would be hard to assess quantitatively, as are the possible social benefits of such restrictions. Because economic development is a multifaceted process, no single policy or single-sector strategy can be successful by itself. Thus, family planning programs by themselves cannot make a poor county rich or even move it many notches higher on the scale of development. However, family planning programs that enable couples to have the number of children they desire increase the private welfare of the people who use Heir services while reducing He burden on society of whatever economic externalities exist. And family planning programs are likely to increase He well-being of the users' children and to extend rawer Han to restrict personal choices. Thus, family planning programs can play a role in improving the lives of people in developing counties.

This book addresses nine relevant questions: Will population growth reduce the growth rate of per capita income because it reduces the per capita availability of exhaustible resources? How about for renewable resources? Will population growth aggravate degradation of the natural environment? Does more rapid growth reduce worker output and consumption? Do rapid growth and greater density lead to productivity gains through scale economies and thereby raise per capita income? Will rapid population growth reduce per capita levels of education and health? Will it increase inequality of income distribution? Is it an important source of labor problems and city population absorption? And, finally, do the economic effects of population growth justify government programs to reduce fertility that go beyond the provision of family planning services?

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Home — Essay Samples — Nursing & Health — Stress — Population Density and Mental Health

Population Density and Mental Health

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Introduction, stress and population density, anxiety and population density, social alienation and population density, mechanisms and moderating factors.

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• World Population Distribution Density and Growth

World Population: Distribution, Density and Growth

The world population, its distribution, density and growth reflect the advancement and development of each geographical zone. The world population has a huge impact on the world economy and climate change.

Being an important topic, world population is discussed widely and is featured in the General Studies I section of the UPSC syllabus.

This article gives a good understanding of the topic, world population from the IAS Exam point of view.

Patterns of Population Distribution in the World

The term population distribution refers to the way people are spaced over the surface of the earth. Broadly, 90% of the world’s population lives in about 10% of the earth’s land area. The 10 most populous countries of the world contribute about 60% of the world’s population (the six countries out of the ten are located in Asia).

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Population Density

Population density is the ratio between the number of people to the area of the land. It is measured in persons per square kilometre or km². The densely populated parts of the world are the north-eastern part of the U.S.A, north-western part of Europe, south, south-east and east Asia. The thinly populated regions of the world are near the north and south poles, the hot and the cold deserts and high rainfall zones near the equator. The population density of India in 2011 was 382 per sq. km.

Density of population = Total Population / Total Area Patterns of population distribution and density give the demographic characteristics of any area.

Factors influencing the distribution of population

The following factors affect the population distribution:

• Geographical factors
• Economic factors
• Social and cultural factors

Geographical Factors-

• Water availability – Water is the most essential factor for the existence of life. It is used for multiple purposes like cooking, drinking, agriculture, etc. People prefer to inhibit areas which have water in abundance, that is why river valleys are among the most densely populated areas of the world.
• Landforms – The Ganga Plains are among the most densely populated areas of the world while mountainous regions of the Himalayas are thinly populated. People prefer flat plains and gentler slopes which are favourable for agricultural purposes, to build better road connectivity and for industries.
• Climate – A climate which is neither too hot nor too cold attracts more people. Areas with very heavy rainfall or extreme and harsh climate have low population density.
• Soil – Areas with fertile, loamy soils are preferred by people as this type of soil supports intensive agriculture.

Economic Factors-

• Minerals -The regions with rich mineral deposits attract industries which in turn generate employment opportunities. People move to such places and make them thickly populated. For example, Katanga Zambia copper belt in Africa.
• Urbanisation – Urban centres offer better employment opportunities, educational and medical facilities, have better means of transport and communication. This results in rural to urban migration and cities become densely populated.
• Industrialisation – Industrial areas provide job opportunities thereby attracting a huge number of people. For example, the Kobe-Osaka region of Japan is densely populated due to the presence of a large number of industries.

Social and Cultural Factors-

Religious or cultural importance also affects the population density of a place. Such places attract more people and if there is social and political unrest in a region, people tend to move away from such places. Sometimes the government offers incentives to people to move to thinly populated areas or move away from overcrowded places.

Population Growth/Population Change

It refers to the change in the number of inhabitants of a territory over a specific period of time. Population growth is expressed either in terms of percentage or absolute numbers. It can be positive as well as negative. Population change indicates the economic development, social upliftment and historical and cultural background of the area.

Some Basic Concepts of Population Geography

• Growth of population – It is the change of population in a particular area between two points of time.
• Growth rate of population – When the change in population is expressed in terms of percentage, it is the growth rate of population.
• Natural growth of population – Natural Growth = Births – Deaths (It is the population increase by the difference between births and deaths in a particular region between two points of time).
• Actual growth of population –  Actual Growth = Births – Deaths + In Migration – Out Migration.
• Positive growth of population –  This happens when the birth rate is more than the death rate between two points of time or when people from other countries migrate permanently to a region.
• Negative growth of population – This happens when the population decreases between two points of time, either when the birth rate falls below the death rate or people migrate to other regions.

Components of Population Change

There are three components of population change – births, deaths and migration.

• Crude Birth Rate (CBR) – It is expressed as the number of live births in a year per thousand of the population.

The region’s demographic structure, social advancement and economic development largely affect the mortality rates of that particular region.

3. Migration – The population size also changes by way of migration. Migration refers to the movement of people from one place to the other, the place they move from is called the place of origin and the place they move to is called the place of destination. Migration may be permanent, temporary or even seasonal. The people who move are called migrants. Migrants who move into a new place are called immigrants and migrants who move out of a place are called emigrants. The main purpose of migration is to attain better economic and social life. Factors that influence migration-

• Push factors – The factors like poor living conditions, unemployment, unpleasant climate, political turmoil, epidemics, natural disasters and social-economic backwardness make the place of origin seem less attractive.
• Pull factors – The factors like better living conditions, job opportunities, peace and stability, security of life and property, and pleasant climate make the place of destination more attractive

Trends in Population Growth

During the early periods, the population of the world grew very slowly. The world population exploded in the 18th century after the Industrial Revolution . Technological developments helped in reducing the death rate thereby, paving the way for accelerated population growth. The human population increased more than ten times in the past 500 years.

• In the 20th century itself, population growth has increased four times.

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• The annual population growth rate in India is 1.64%.

Demographic Transition

It is a theory which is used to represent the movement of high birth and death rates as the society progresses from rural agrarian and illiterate to urban industrial and literate society. It studies the relationship between economic development and population growth. This theory can be used to describe and predict the future population of any area. These changes occur in stages which are collectively called a demographic cycle.

• Stage 1 – The first stage is characterised by high birth and death rates, and therefore, population growth is slow. This stage is associated with under-developed, low output and agriculture-dominated conditions. Two hundred years ago, all the countries of the world were in the first stage of demographic transition.
• Stage 2 – It is characterised by a high birth rate and reduced mortality rate leading to an increased population. Improvements in medical care, water supply and sanitation result in decreased death rates.
• Stage 3 – In this stage both birth and death rate decline appreciably. The population is either stable or grows slowly. The population becomes urbanised, literate and has a high technical know-how and controls the family size.

In the present times, different countries are at different stages of demographic transition.

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• Population Essay

Introduction to Population

Population is a very interesting topic to learn. There is no denying the fact that the population of any country is a very strong indicator of how exactly the country will function in the future and what its capabilities are as a nation. Leaders of the world pay a lot of attention to their country’s population for the same reason. The population and the skills that they possess are perhaps some of the most essential assets for any country. The following article is an essay on the topic of population and has been structured in a way that students of all ages can learn and understand the key points that they need to mention whenever they are writing an essay like this. 

Brief on Population

When we talk about a country’s population, we are talking about a lot of things. We are talking about its future workforce, the people that will build the country as a place to live and grow in, we definitely are talking about the future of the entire country. Taking India’s example, when we talk about the population of the country, we are talking about the future of the dream that our freedom fighters dreamt for us as a nation. Together, the entire population of a country has the potential to change the entire landscape of the kinds of work, and jobs that they do. 

The population of a country is responsible for the economical changes and growth in the country and hence is very important. It is also very important to take care of this population. The population needs the right kind of food, healthy environment to grow in and a great and comfortable lifestyle right from the start. Is that something that is possible for everyone? We all know the answer to this. In a country like India, where income disparities are massive, there is no chance for every single section of the population to have a good lifestyle right from the start that can help them grow as individuals. 

The same applies for other countries as well. Every country has an income disparity among the people that live in it and this is what makes the topic of population so interesting. We already know that it is the biggest asset that any country can have, but every country must plan and strategize well to take care of this population so that every single need is being fulfilled. This not only helps the country flourish as a whole, but also increases its chances of becoming successful in the future. 

Population Explosion

The current population of India is around 140 crores. According to certain reports, in the next few years, there will be a solid growth of population in India, and globally too.

The population is the total number of human beings living in a city or the country. It allows knowing how much resources are required by this population to fulfil and other plans needed. Year by year, there has been an explosion of population, which is making it difficult to provide resources to every person living in the country. Low literacy, early marriage and demand for family growth are some of the reasons behind the explosion of the population.  India is the primary ground of population explosion. It covers 17% of the population of the world and is the most populated country.

Reasons Behind the Growth of the Population

There are many reasons for the growth of the population. The low literacy rate is one of the reasons behind this explosion. For example, in India, the literacy rate is relatively low in many states. Many people living in the village fail to complete education and have less knowledge about birth control. They keep on expanding their family.

Moreover, they do not carry much knowledge about birth control techniques or medication. This lack of understanding further leads to a population explosion.

Another primary reason behind the growth of population is child marriage. The custom of child marriage is still followed in many parts of the country. Parents marry off their daughter at an early age, and at a young age, these girls get pregnant. This process continues for a long time.

One of the reasons behind this growth is there are not strict laws in India, unlike other countries. This also makes it hard for citizens to get an equal share of resources.

Impact of Population Explosion

Population explosion causes harm, not only to citizens of the country, but also nature. Increase in population means the need for more space to live, resulting in deforestation. Many cities have lost the green zone to fill it with urban living. Deforestation is leading to the extinction of species and other resources.  Animals are losing their homes, which makes them encroach on cities taking the lives of people.

Subsequently, an increase in population is also leading to population. More and more people are buying vehicles for their convenience, which is resulting in pollution. Massive traffic, congestion on roads and other negative scenes are witnessed in cities.

Population increase also calls for industrialization, which invites pollution in all areas. A country like India is now witnessing a massive problem of pollution and global warming.

Irregular distribution of food to all populations is another significant impact. Many families in rural areas do not get proper food to eat. Many poor kids go to sleep without eating food. This irregular distribution of food is not the scenario only in India, but other developing countries.

How to Control the Population?

One of the ways to control the population is to educate people about its ill effects on the country's resources. Government, along with NGOs, need to visit every rural area of the country to inform people about population control.

Providing birth control kits, education to kids and monetary benefits to families successful in restricting birth can do the needful.

We, humans, often forget how we are going to suffer if the population keeps exploding. If the number keeps rising, then it will be difficult to survive. Citizens need to understand the negative impact of the population explosion. Taking the right measures and keeping the resources in mind will help to control the population.

FAQs on Population Essay

1. How can the population affect climate change?

A growing population can have a significant impact on climate change. The buildup of human-generated greenhouse gases in the atmosphere is one of the effects of increasing human population. According to one study, there is a deep relationship between population growth and global warming. One child can produce 20 times more greenhouse. Similarly, a child born in the US will add up to 9441 carbon dioxide. This is certainly the most chilling effect of increasing population.

Global warming is the most common fear for today and the coming generation. To stop its growth, controlling the population is essential.

2. How population growth affects the environment?

There is a direct impact of population on the environment. More the population, the more resources are needed. There is a requirement that more space means more deforestation. Population growth also leads to an increase in greenhouse gases, which can affect this planet earth.

Rising sea levels in the coastal region are seen, which eventually leads to flooding. Like these, there are many impacts on the environment due to population growth. In many cities in developing countries, there is a shortage of space. People are not able to find space to live. Moreover, they find it hard to get clean water and are exposed to air pollution and other environmental issues.

3. Will the population increase post-lockdown?

According to the UN report, India will witness a baby boom post-lockdown. The report said, "The pandemic could strain health care capacities for mothers and newborns.” There is an estimate of 116 million babies to be born post-lockdown. The case is not just about India, but China (13.5 million births), Nigeria (6.4 million) and Indonesia (4 million). Post-lockdown, it could be a testing time for developing countries on how the population will affect resources.

4. What are some things that shall be considered while writing an essay on the topic of “Population”?

Whenever you are writing an essay on this topic, make sure that you are highlighting points like how population grows, the impact of this growth, ways to control population and the reasons why population of a country is so important. Once this is done and when you have an idea of what you need to be writing about, start building upon these points. By simply doing this, you will be able to write a brilliant essay. 

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Thomas Malthus on population

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Thomas Robert Malthus (1766–1834) demonstrated perfectly the propensity of each generation to overthrow the fondest schemes of the last when he published An Essay on the Principle of Population (1798), in which he painted the gloomiest picture imaginable of the human prospect. He argued that population , tending to grow at a geometric rate, will ever press against the food supply, which at best increases only arithmetically, and thus poverty and misery are forever inescapable. This idea is altogether plausible, if simplistic, and its rapid adoption by theorists of the laissez-faire school is largely responsible for the designation of economics as the “dismal science.” Malthus’s argument had a profounder effect on the science of biology , for it was the reading of his essay that sparked the idea of natural selection by survival of the fittest in the minds of both Charles Darwin and Alfred Wallace .

By the time Malthus was asked to write the article “Population” for the 1824 Supplement of the fourth edition of the Encyclopædia Britannica , he had somewhat moderated the bleakness of An Essay on the Principle of Population , at least to the extent of adding to the “positive checks” on population—war, starvation, and so on—the idea of more benign “preventive checks,” prudential acts like the purposeful delay of marriage and childbearing. The following short excerpt from Malthus’s article focuses on his ideas about population control.

Consider…the nature of those checks which have been classed under the general heads of Preventive and Positive.

It will be found that they are all resolvable into moral restraint , vice , and misery . And if, from the laws of nature, some check to the increase of population be absolutely inevitable, and human institutions have any influence upon the extent to which each of these checks operates, a heavy responsibility will be incurred, if all that influence, whether direct or indirect, be not exerted to diminish the amount of vice and misery.

Moral restraint, in application to the present subject, may be defined to be, abstinence from marriage, either for a time or permanently, from prudential considerations, with a strictly moral conduct towards the sex in the interval. And this is the only mode of keeping population on a level with the means of subsistence, which is perfectly consistent with virtue and happiness. All other checks, whether of the preventive or the positive kind, though they may greatly vary in degree, resolve themselves into some form of vice or misery.

The remaining checks of the preventive kind, are the sort of intercourse which renders some of the women of large towns unprolific: a general corruption of morals with regard to the sex, which has a similar effect; unnatural passions and improper arts to prevent the consequences of irregular connections. These evidently come under the head of vice.

The positive checks to population include all the causes, which tend in any way prematurely to shorten the duration of human life; such as unwholesome occupations—severe labour and exposure to the seasons—bad and insufficient food and clothing arising from poverty—bad nursing of children—excesses of all kinds—great towns and manufactories—the whole train of common diseases and epidemics —wars, infanticide, plague, and famine. Of these positive checks, those which appear to arise from the laws of nature , may be called exclusively misery; and those which we bring upon ourselves, such as wars, excesses of all kinds, and many others, which it would be in our power to avoid, are of a mixed nature. They are brought upon us by vice, and their consequences are misery.

…Prudence cannot be enforced by laws, without a great violation of natural liberty, and a great risk of producing more evil than good. But still, the very great influence of a just and enlightened government, and the perfect security of property in creating habits of prudence, cannot for a moment be questioned.…

The existence of a tendency in mankind to increase, if unchecked, beyond the possibility of an adequate supply of food in a limited territory, must at once determine the question as to the natural right of the poor to full support in a state of society where the law of property is recognized. The question, therefore, resolves itself chiefly into a question relating to the necessity of those laws which establish and protect private property. It has been usual to consider the right of the strongest as the law of nature among mankind as well as among brutes; yet, in so doing, we at once give up the peculiar and distinctive superiority of man as a reasonable being, and class him with the beasts of the field.…If it be generally considered as so discreditable to receive parochial relief, that great exertions are made to avoid it, and few or none marry with a certain prospect of being obliged to have recourse to it, there is no doubt that those who were really in distress might be adequately assisted, with little danger of a constantly increasing proportion of paupers; and in that case a great good would be attained without any proportionate evil to counterbalance it.

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Essays on population density

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Essays on Population Density

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The world's populace increases by approximately 80 million people each year, according to the population reserve website, Population Connection. And with most of this inhabitants occupying comparatively small urban areas, it is not astonishing that population density is a mounting cause of concern. And while there are many unconstructive impacts of high population densities, there are also a few constructive ones.

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The Effects of Population Density and Noise Essay

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In the recent years, the world has seen an increase in population of people. In turn, this has led to an increase in the population density in the world today. By definition, population density is the amount of people that are living or occupying a certain area divided with the size of the area that is being occupied.

It is estimated that 70 percent of world population occupy one mile per square. Due to having the high influx of people, various environmental issues arise due to the stress of the high number of people (Myarabians, 2010). Some of these issues that arise are not only the cultural issues or the economic issues, but others like personal space, privacy and the territory that someone is working around also tends to be affected.

By definition, personal space is the area around a person that the person feels is adequate enough to offer the comfort that he/she requires. Since people are different, comfort may vary due to the culture of the person, the age and also the context the person is in.

Personal space may also vary when the person in question has an unpleasant view about the neighbor, or if there is a case of stigma that the person may be having against other persons. However, the reverse of the same usually happens when the person in question has a different view about the person around him.

A good example is a scenario where there exists friendship between the people to other persons around him (Myarabians, 2010). Territoriality deals with the spaces available to people, which people need to sustain their lives comfortably.

Again as earlier noted, these spaces may differ among people of different age and beliefs. The relationship between the various people may be the cause of the behavior of people in reference to territoriality.

In the recent years, the importance of territoriality, privacy, and personal space concepts is becoming of much importance. The can be attributed to the increase in the population, as more and more people are being born in the world today.

In turn, the population density that has resulted has led to unavailability or denial of these concepts as space has become scarce as time goes by. Since urban areas attract the biggest influx of people, it has resulted to people being offered such locations as parks, zoos and gardens to supplement some of these unavailable pressures (Cormode, 2010).

Most of these concepts are no longer there, which is notably necessary to accommodate the big number of people in the world today. Incase people were to still keep these concepts; we would need another planet to settle the big number of people coming to the world every year.

Presence of zoos, parks or even gardens is of utmost of importance to people living in urban areas. The fact that these areas offer the people in urban areas a chance to enjoy a conducive environment without the pressures in the environment just shows how necessary they are in this day and age.

Most of these areas are also endowed with natural vegetation like trees, which some of these people lack in their surrounding as most areas in cities are filled with buildings. In these areas, the concepts of territoriality, privacy, and personal space are not much exercised as the areas are accessible to everyone who wishes to visit them.

When it comes to privacy matters, it is evident that no privacy exists in these areas as there are no secret areas for anyone. These areas are therefore aimed at ensuring that the society stays together, without these concepts, where time becomes more difficult to enjoy due the pressure of the population.

Population trend that exists between a certain groups of people has an effect on the noise that is around that group of people. The meaning of this is that urban areas have more noise than the rural or the suburb areas.

The reasoning behind this is due to the fact that there are more people in urban areas as the population there is denser. Through the years, the noise has always been in the increase due to the fact that the population of people in urban areas is in the increase (Hunt, 2011).

The effect that noise has on people is different among different people. For one, noise causes people to be ineffective in their work. Further, noise interrupts the concentration of people and destroys the seriousness that was already there.

On the same note, if there is no concentration there is usually the risk of occurrence of accidents among the people doing the work, if their minds roam from the job they are doing. To add on the same note noise reduces efficiency of some of the people. Most people find it hard to work properly with loud noises around them.

To a work place, noise pollution can be a nuisance and can even reduce the output of the workers as well as their effective working. To add on that, noise may lead to accident in a work or organization, especially if it deals with usage of machines.

In turn, there is need to ensure that there are ways that are put across to ensure that noise is reduced in the work place. One of the most suitable ways to do this is to eliminate the noise from the source. It is also notable that most of the noise that is experienced in industrial organization does not come from the work that is done, but from the machines that are used to do the work.

The realization further reinforces the need to ensure that the workplace is kept with minimum or even without any noise. There are various ways that can be used to minimize the noise from the source. One of such ways is installing muffles on the engine of the machine that is being used.

Presence of muffles in the machine area minimizes the noise that is directed to the work place, and subsequently the environment. The other way that noise may be reduced noise in the work place is usage of machines and materials that are noise-free. To add on that, damping may also be incorporated (Hunt, 2011).

The meaning of damping is that the person who is using the equipment holds it tightly to prevent the object from vibrating and subsequently causing noise. When the person holds the machine tightly, he tends to absorb the vibration that is produced by the machine in question as well as the noise.

Another way of eliminating noise at the source is ensuring that the equipment used is in the right condition. Faulty machines and equipment are usually likely to cause a lot of noise in the work place as people try to work.

The fact that some of these machines may even have rust on them poses a great danger to people working with this equipment as noise is not the only concern but also the danger posed by usage of these machines.

The other strategy that may be used is using sound enclosures and sound barriers. In case it might not be possible to be able to eliminate the noise from the source, the other way is to ensure that the noise is controlled before it gets to the workers.

Creating of a sound box is one of the ways that may be used to eliminate sound from getting to the workers. A sound box offers acoustics insulation properties that are essential in eliminating the noise that is existence in the environment. However, it is always necessary to ensure that other considerations like the size of equipment that may need to be transported in and out of the enclosed space are put in mind.

On the other hand, barriers are walls with acoustic properties (Scott, 2007). However, it is worth noting that barriers are only effective in achieving the objective of minimizing noise if they are very close to the source of the noise.

In case it is not close to the source or the machine producing the sound, there is the risk that sound will travel through to the other areas of the organization. Finally, the organization may resolve to set up the organization in a far place from noisy areas.

Such a move would lead to the organization resolving all problems that come with noise. An organization that is far away from the source of noise is likely to avoid problems that come with the noise such as accidental risks.

To sum up, the changes that have occurred in terms of population have resulted to various pressures in the environment. As discussed above, these concepts are no longer being held by people as the population that is in the world today is big and continually increasing.

People, especially in the urban areas, are notably accepting the fact that they may need to comprise as population density in these areas is big, and at the same time on the increase. In turn, the councils in these regions have resulted to coming up with some areas that people can release these pressures of population density.

Zoos and parks are some of the solutions that people in urban areas have been provided for them to be able to release these pressures. At the same time, these areas are also offering a chance to the dwellers of the urban areas with a chance to live together as they are not restrictive of who visits there, and the general public is allowed. Such should be the goal of everyone in the world today.

There is no way the world would be able to control the birth rate and the number of people in existence in the world at any given time, and the only way people can do favor to themselves is ensuring that they are accommodative of the people around them. Though these may be a sacrifice to most people in the world today, it is the only way that people can have peaceful coexistence.

Cormode, G. (2010). Individual Privacy vs Population Privacy: Learning to Attack Anonymization . Web.

Hunt, J. (2011). Two Strategies That Can Be Used to Reduce Noise in the Workplace. Web.

Myarabians. (2010). Effects of Population Density . Web.

Scott, E. ( 2007). How To Reduce Noise Pollution and Its Negative Effects . Web.

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