关键词: 人口分布, 空间演变, 动力机制, 长江三角洲

Abstract:

The study of regional population evolution is helpful to reveal the rule of population distribution and is important for reasonably making population developmental policy, and for the promotion of regional sustainable development. In this paper,firstly, a preliminary study was conducted on population distribution structure according to the third, fourth, fifth census materials, and all previous statistic yearbooks about all cities in the Yangtze River delta area.The population quantity of different cities is quite different, with the density being higher in the north, and with distribution concentrated along traffic axes. Then, characteristics of population distribution and regulation have been particularly analyzed since 1980s. It was shown that there are many differences among the population amplitudes in different cities, with lower increase of population density. The distribution is of concentrationdecentralization pattern, and center of gravity moves from northeast to southwest. Some exterior factors affect the regional population spatial distribution. It was considered that economic factors, status and function, policy, information and traffic factors are the causations resulting in the great changes of regional population spatial distribution.

Key words: population distribution, spatial evolution, dynamic mechanism, Yangtze River Delta