空间过密化与反过密化——中国大城市空间演化的一个解释框架及初步验证

SPATIAL INVOLUTION AND DE-INVOLUTION:AN EXPLANATORY FRAMEWORK FOR THE SPATIAL EVOLUTION OF CHINA'S LARGE CITIES AND ITS PRELIMINARY VERIFICATION

基于经济社会系统演化的过密化理论,论文从城市公共性的角度出发,以公共资源物质积累——即基础设施替代原理论中的经济产出要素,提出大城市空间演化中基础设施边际供给随人口递减的"空间过密化"假设。借助上海中心城区、深圳关内地区人口与基础设施关系的演化实证,论文认为,中国大城市在边际规律作用下经历了若干轮空间过密化进程,且通过"疏解"和"就地更新"两类手段实现空间反过密化。论文为解释中国大城市空间发展的过程机理提供了理论框架与实证案例。

From the perspective of urban publicity and based on the theory of involution on the evolution of socio-economic system,this article replaces the economic output factor in the original theory with the material accumulation of public resources – infrastructure and proposes the hypothesis of "spatial involution" in which the marginal supply of infrastructures decreases with population in the process of the spatial evolution of large cities.On the basis of the empirical cases of the central districts of Shanghai and the former urban districts of Shenzhen Special Economic Zone,the article argues that China’s large cities have experienced several rounds of spatial involution under the influence of the marginal law and have achieved spatial de-involution by means of"relocation" and "in situ renewal." In addition,it provides a theoretical framework and empirical cases for explaining the mechanism of spatial development in China’s large cities.