我国城乡收入差距与城镇化率的倒U关系研究

The Inverted U-shaped Curve between Chinese Urban-Rural Income Inequality and Urbanization Rate

城镇化率如何影响我国城乡收入差距问题一直备受实务界和理论界的关注。本文在假定我国整个社会体系由城镇与农村两部门构成的条件下,以泰尔指数作为我国城乡收入差距的测度指标,依据泰尔指数定义建立城乡收入差距与城镇化率关系的理论模型,得出两者之间存在倒U型关系,利用效用最大化理论对倒U型结论进行具体分析;然后,整合我国1995-2012年的时间序列数据与各省面板数据,根据数据计算得出泰尔指数与城镇化率值后进行实证分析,得出的实证结果与理论分析结论一致。本文从理论和实证上分析我国城乡收入差距与城镇化率的倒U型关系,说明走新型城镇化发展道路是缩小我国城乡收入差距的必然选择。

Practitioners and theorists have concerned how the urbanization rate influences the urban-rural inequality in China,so this study establishes an economic theory model between the Theil index and the urbanization rate under the hypothesis that the whole society consists of urban sector and rural sector. With the Theil index as the measure indicator of the urban-rural inequality in China,this paper reaches the conclusion that there exists an inverted U-shaped curve relationship and analyses specifically the conclusion in the framework of the maximizing utility; then,the paper makes an empirical analysis after computing the Theil index and the urbanization rate through integrating the time series data and provincial panel data of 1995- 2012,and draws the same conclusion between an empirical analysis and the theoretical analysis. In short,this study analyzes the inverted U-shaped curve between the urbanization rate and the Chinese urban-rural inequality from both theoretical and empirical perspectives in order to prove that taking a new urbanization path of development to reduce the Chinese urban-rural inequality is an inevitable choice.