Population distribution and density in an area depends to a large extent on the type and scale of economic activities.
However, the unregulated influx of so many migrants and the instability of their lives and work have put considerable strain on the host cities, notably the environment and public security.
As a general rule the higher the life expectancy the more healthy or developed a country is. In areas of low population density, the land is often rugged, steep and high above sea level. Rising Himalayas, thus, mark the northern limit of dense population in the Ganga plain.
The major reason for population changes, whether in an individual country or for the whole world, is the change in birth and death rates. The influx of people into Manchuria was especially pronounced afterand incoming farmers rapidly brought a vast area of virgin grassland under cultivation.
Similarly, the chernozems of steppe grasslands and rich volcanic soils can support dense population. La Paz, the highest city in the world 3, m and the capital of Bolivia, owes its existence to this factor.
Population density varies strikingly, with the greatest contrast occurring between the eastern half of China and the lands of the west and the northwest. Staszewski, in his exhaustive analysis of the vertical distribution of population, has shown that both numbers and densities in different parts of the world decline with increasing altitude.
Publication of a number of influential textbooks—such as those by John Clarke and George Demko, Harold Rose, and George Schnell —gave population geography a firm place in the geography curriculum in many countries. New railways and highways were constructed to traverse the wasteland, and this has spurred population growth and the development of a number of small mining and industrial towns.
For that to happen, Africa will have to choose the right policies and overcome its many problems. Politically, it shapes voting patterns and representation. Efforts to control the growth of large cities led to the resettlement in the countryside of some 20 million urbanites after the failure of the Great Leap Forward and of nearly the same number of urban-educated youths in the decade after Kalgoorlie, a gold mining town in the Australian deserts, is a very good example in this regard.
Countries with stable governments tend to have a high population density e. The Chinese economy thus has been in a state of transition since the late s as the country has moved away from a Soviet-type economic system. Mountains in Africa and Latin America are much healthier than plains, and large cities have sprung up at high altitude.
During the more recent times, government policies and political factors have emerged as an important determinant of population patterns. The grouping of people within settlements The way from the geographical character of places, e. Such areas have, thus, attracted population during the recent past.
Most of the densely populated areas of the world have a very long history of human habitation, while sparse population in certain areas can in part be explained in terms of its recent habitation. Amazon Rainforest The world's population is growing very rapidly.
It is, therefore, important to note that the influences of all the physical factors outlined above operate through a series of economic, social and political factors in the area concerned. Physical factors that affect population distribution include altitude and latitude, relief, climate, soils, vegetation, water and location of mineral and energy resources.
As against this, in the high latitude areas, it becomes extremely difficult to live beyond a few hundred metres from sea level. Dense population concentration has replaced long established pattern of dispersal and generally even distribution.
Similarly, the quality of soils exerts an undeniable influence on the distribution of world population. An imperial decree in closed the area to further Han migration, but this ban was never effectively enforced.
In the s the government became increasingly aware of the importance of the frontier regions and initiated a drive for former members of the military and young intellectuals to settle there.
Each stage in economic development was marked with profound changes in population density and distribution in the region. Social Groups of people want to live close to each other for security e.In areas of high population density, the land is often flat and low lying which encourages settlement development.
Land like this is easier to build on and goods are easier to transport. In areas of low population density, the land is often rugged, steep and high above sea level. The changing distribution, rate and nature of the world’s population consider a number of factors which include urbanisation, population of the developing and developed countries.
Also how fast or slow the population increases over a specific period of time, and where the distribution is and why. Resource Distribution and its Consequences Share Flipboard Email Print Donovan Reese/ Stone/ Getty Images Geography.
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Mercantilism and Its Effect on Colonial America. Feb 21, · Population distribution modelling. The methods used here to model population distribution in Africa are adapted from previous work undertaken for East Africa –.The methods were modified for ease of replication and to facilitate the incorporation of new data.
It is, however, not to suggest that population distribution on the earth surface is determined by physical factors alone, for within the broad framework of physical attractions and constraints, cultural factors strongly influence the way mankind is distributed over the earth (Hornby and Jones, ).
The Effects of Population on the Environment chapter of this Human Geography Help and Review course is the simplest way to master the effects of population on the environment.Download