19685373-IBWG-Population-Demographics-Notes -...

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Unformatted text preview: http://guidesbyjulie.blogspot.com/ IB World Geography September 1, 2009 Population Demographics The scientific study of population demographics is demography At a global scale, there is a debate demography. regarding the so-called overpopulation problem. This problem is not based on the total number of people, but the relationship between the number of people and the available resources At a local scale, there are resources. many regions where overpopulation poses no threat to the available resources. Approximately 2/3 of the world’s population is clustered in 4 regions: East Asia South Asia Southeast Asia Asia, Asia ia, Asia, and Western Europe The four regions display some similarities. Most of their people live near an ocean or Europe. near a river with easy access to an ocean. The four population clusters occupy generally low-lying areas, lowwith fertile soil and temperate climate Despite these similarities, we can see significant differences in the climate. pattern of occupancy of the land. East Asia 1 /5 1/5th of the world’s population live in East Asia, the region with the largest cluster of inhabitants. 85% of the people in this concentration live in China which is the world’s most populous country. The Chinese China, ths population is clustered near the Pacific Coast and in several fertile valleys 3/4th s of the people live in rural valleys. areas where they work as farmers. farmers ths In Japan and Korea population is not distributed uniformly either. More than 3/4ths of the Japanese and Korea, Korean live in urban areas. South Asia The second-largest concentration of people, more than 1/5th, is in South Asia. India the world’s second most India, ths populated country, contains more than 3/4 of the South Asian population concentration. Much of this area’s population is concentrated along the plains of the Indus and Ganges rivers. Population is also concentrated near India’s two long coastlines Like the Chinese, most people in South Asia are farmers coastlines. farmers. Southeast Asia The world’s fourth-largest population cluster, after Europe, is in Southeast Asia, mostly on a series of islands Indonesia, Indonesia which consists of 13,677 islands, is the world’s fourth most populous country. Several Philippine islands contain high population concentrations. The Indochina population is clustered along several river valleys and deltas at the southeastern tip of the Asian mainland. A high percentage of people in Southeast Asia work as farmers farmers. The three Asian population concentrations together comprise over half of the world’s total population , Asian o ver t otal but together live on less than 10% of the Earth’s land area The same held true over 2,000 years ago. area. http://guidesbyjulie.blogspot.com/ IB World Geography September 1, 2009 Population Demographics Europe Combining the populations of Western Europe Eastern Europe and the European portion of Russia forms Europe, Europe, the world’s third-largest population cluster, or 1/9th of the Earth’s people. 3/4 ths of Europe’s inhabitants live in cities. import cities They import food and other resources. The search for additional resources was a major incentive for Europeans to colonize other parts of the world during the previous six centuries. Other Population Centers The largest population concentration in the Western Hemisphere is in the Northeastern U.S. and Hemisphere U.S., Canada. Southeastern Canada About 2% of the Earth’s people live in this area. Less than 5% are farmers. Another 2% of the Earth’s population is clustered in West Africa especially along the South-facing Atlantic Africa, Southcoast. Nigeria, coast Approximately half is in Nigeria and the other half is divided among several small countries west of Nigeria. Most of these people work in agriculture agriculture. Sparsely Populated Regions Relatively few people live in areas that are too dry too wet too cold or too mountainous for agriculture dry, wet, cold, agriculture. Approximately 3/4ths of the Earth’s population lives on only 5% of the Earth’s surface. The portion of the Earth’s surface occupied by permanent human settlement is called the ecumene The areas of Earth that ecumene. humans consider too harsh for occupancy have diminished over time, while the ecumene has increased. Even 500 years ago much of North America and Asia lay outside the ecumene. Why do we study population? 1. More people are alive at this time—more than 6 billion —than at any time in human history. 2. The global population increased at a faster rate during the 2nd half of the 20th century than ever before in history. 3. Virtually all global population growth is concentrated in LEDCs LEDCs. ...
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This note was uploaded on 01/19/2012 for the course CH 101 taught by Professor Sutcliffe during the Spring '08 term at University of Texas at Austin.

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