Comparative Studies On Social And Economic Driving Forces Of Urban Built-Up Land Expansion In The Cities With Population Over 500 000 In The Three Zones Of China

Urbanization is the hotspot problem what the mankind will concern with in 21 century. Along with the rapid development of the Chinese economy, the urbanization course will quicken. Accompany with the growth of the city population, the contradiction between much people and little land will be more outstanding, the contradiction between the farmland protection and urban land expansion will be also sharpen more. Therefore, the research about urban land expansion is of significance for promoting intensive use of the urban land. The analysis about the characteristics and driving forces of urban land expansion has much more importance for establishing objective and actual countermeasures in urban land use and promoting the city healthy and sustainable to develop.This thesis mainly comparatively study social and economic driving forces of urban land expansion in the cities with population over 500 000 in the three zones of China from 1984 to 2003. The whole thesis is divided into five parts totally.In part one, the background and significance of the thesis and a documentary summary of the focal points are stated simply. Based on this, the clue and method and essential problems are illustrated.In part two, the current land use changes of the whole country and three zones ofChina in the cities with population over 500 000 in China are briefly stated.In part three, the four characteristics of urban land expansion in the cities with population over 500 000 are summarized.In part four, social and economic driving forces of urban land expansion in the cities with population over 500 000 in the whole country and the three zones of China are comparatively researched.Part five is conclusion and discussion. According to the above-mentioned analyses and studies, we can arrive at the following major conclusions:(1) The four characteristics of urban land expansion in the cities with population over 500 000 are summarized. Firstly, city quantity and urban gross land are continually increasing, the rising speed of the eastern zone of China is the fastest. Secondly, average urban land per capita is fluctuant and the average rising speed per year in the eastern zone of China is the fastest. Thirdly, urban land structure is evidently improved. Fourthly, the regional divergence of urban land expansion is obvious.(2) The index system to appraise the social and economic driving forces of land expansion in urban build-up areas in the cities with population over 500 000 in China from 1984 to 2003 is established. By enter regression approaches, this thesis makes conclusions as follows. The driving forces of urban land expansion in the cities with population over 500 000 in China are influenced by population growth, economic and social development, environment. Then some correlative factors are selected, the primary driving forces are analyzed by stepwise regression approaches.(3) This thesis makes conclusions as follows. The primary driving forces in the cities with population over 500 000 in China are the population growth and the environment improvement which is indicated by the provided with extend equipped roadway areas growth actually at the end of the year. The primary driving forces in the cities with population over 500 000 in the eastern zone of China are the environment improvement which is indicated by the provided with extend equipped roadway areas growth actually at the end of the year and the population growth. The primary driving forces in the cities with population over 500 000 in middle zone ofChina are the economic and social development which is indicated by the gross domestic production growth and the environment improvement which is indicated by the gardens and greenbelt area growth. The primary driving forces in the cities with population over 500 000 in western zone of China are the population growth the environment improvement which is indicated by the gardens and greenbelt area growth.According to the above-mentioned analyses, from the whole country seen and from the three zones of China observed, the common characteristic of land expansion in urban built-up areas is that the environment improvement is one of the primary driving forces in the cities with population over 500 000 in China.