产业结构和城市规模对城市减贫的影响——基于中国100个城市的面板数据的分析

Influences on the urban poverty reduction by industrial structure and city size: based on the analysis to Chinese 100 cities with panel data

基于我国100个地级及以上城市的面板数据,采用GMM和门槛面板模型,分析了产业结构和城市规模对我国城市贫困的协同效应。结果显示:中国城市贫困与城市规模之间存在U型关系,即城市规模在达到"最优规模"之前,通过"规模红利"的作用,在一定程度上缓解了城市贫困问题;产业结构与城市贫困的关系在不同地区不尽相同,在东部地区,产业结构与城市贫困之间呈负相关关系,即产业结构向第三产业的转移有利于改善城市贫困,在中西部地区,产业结构与城市贫困之间呈现出U型关系;城市中过高的服务业比重将妨碍"规模红利"的发挥,对城市贫困具有消极影响。

Based on the panel data of 100 cities at pre- fecture level or above, this essay empirically analyzes the syner- gy effects of city size and industrial structure on urban poverty in China by comprehensively using Econometric Methods such as GMM and Threshold Panel Model. The results show that： First- ly, there is a U - shape relationship between urban poverty and city size; Secondly, the relationship between urban poverty and industrial structure is different in different regions： there is a negative correlation between industrial structure and urban pov- erty in the east while a U - shape relationship between the two is found in the mid - west. The influence of city size and industrial structure on urban poverty is mutually restricted.