城市化进程研究:以京津唐及美国城市群为例的分析

Urbanization Process Study: Analysis Based on Jingjintang Urban Group and American Urban Group

城市发展为城市群的扩散过程可以划分为六个阶段:区域均质经济增长状态;区域成长出经济核;核富集成长为初级城市;初级城市发展为中大城市;大城市间相互影响成长为特大城市;特大城市功能疏散出现逆城市化。六个阶段的发展状态取决于要素聚集扩散的相对变化程度,不同区域的城市由于其依托的资源基础不同而呈现出不同的聚散速度。京津唐与美国城市群的圈层发展方式对城市群的空间发展提供了很好的说明。

The extending process from individual urban to urban group can be divided into six stages： regional equal economic increase state; economic core being shaped in region; initial urban being created because of core attraction; initial urban developing into big urban; big urban developing into mega - urban; mega - urban function dispersion leading to contra - urbanization. The developing states of six stages are determined by the comparative changing degree for factors conglomerating or dispersing. Different developing speed can be shaped on the basis of different resources condition in different area. Circling development for Jingjintang urban group and American urban group provides the good prove for the space development of the urban group.