中国城镇贫困陷阱问题研究

A Study on the Poverty Trap in Urban China: Theory and Substantial Evidence

本文采用我国29个省份城市居民收入5等份数据,运用Panel Data模型对我国城镇贫困陷阱问题进行分析。结果表明:在采用粗略的5等份数据情况下,我国海南、河南、江苏、江西、山西、湖南和上海7省市城市居民收入存在非凸性。收入非凸性的存在,说明这些省份存在不稳定的低水平均衡点,即存在所谓贫困陷阱。因此,在政策上应加强社会保障体系的制度整合,使最低生活保障获得"合力效应",避免城镇居民落入贫困陷阱。

The article adopts Panel Data Model to carry out substantial evidence test regarding poverty traps in cities through the equally divided 5 parts of data of urban households income from 29 provinces （or municipal cities） in China. The result shows that concavity exists in urban household incomes of the following seven provinces （or municipal cities）, including Hainan, Henan, Jiangsu, Jiangxi, Shanxi, Hunan and Shanghai. Income concavity indicates that these provinces （or municipal cities） have low-level equilibrium, which represents the poverty traps. Accordingly, we should strengthen the integration of the social security system, enhance the lowest social security for an accumulation effect, and prevent urban households from falling into poverty traps.