The Empirical Study On The Factors Of Spatial Scale Of Chinese Cities

Urban economics believe that urban spatial size is determined by an orderly process which correctly allocates land between urban and agricultural uses. This paper analyses the impact of factors of Chinese large cities' spatial size on the base of urban economics and ubans structure theory. Firstly, it analyses the cities development course and condition, then summarizes and classifys the factors to three kinds: the basic factors, push factors and political factors.Secondly, we use the Mills-Muth model to analyses the related variables and their effects. The empirical study results suggests that:(1) The Mills-Muth model is empirically robust in China, but the coefficient significance is lower than in USA, the coefficients of angricultural rent and commuting cost are not significant. (2)Besides the population, income, agricultural rent and commuting cost which Mills-Muth model points out, industrialization, industry construction, environment, infrastructure, district area, land consolidation, energy sources are the impact factors of spatial size of Chinese large cities as well. Moreover, the paper analyses the cities in different regions and political levels and suggests the Mills-Muth model works well in the assistant-province cities and western cities of China.The results of this study constitute further evidence of the empirical robustness of Mills-Muth model. It should further increase our confidence in the model as a tool for policy analysis. So the paper gives some advises to our urban administration and construction, it suggest that we should give more attentions to the development of metropolis, and improve the urban administration and planning, improve the urban land consolidation condition, make the urban land to be more concentrative, more sweeping, more consolidated.