中国居民收入两极分化测度

Measurement of Income Bipolarization of Chinese Residents

使用CHNS的8年调查数据,根据不同分组标志选取相应的极化测度方法,并结合相应的收入分布图分析我国居民收入两极分化状况,结果表明:基于中位数和平均数分组的我国居民收入两极分化以及城乡收入两极分化程度,在1988—2003年不断上升,而2003年以后开始下降;基于众数的分组不能很好地度量我国居民收入两极分化状况;而基于贫困线分组的两极分化指标一直表现出强劲的上升趋势。因此,在我国总体居民收入两极分化趋势得到有效遏制的背景下,贫困群体的收入和生活状况需要引起重视,政府应进一步完善分配制度,努力改善贫困群体的收入和生活状况。

This article uses CHNS survey data in eight years,chooses corresponding polarization measurement methods according to different groups,and uses the related income distribution diagram to analyze income bipolarization situation of Chinese residents,and the results show that income bipolarization degree of Chinese residents and urban-rural income bipolarization degree based on median and average grouping are constantly rising during 1988—2003 and began to decline after 2003,however,the modal grouping can not properly measure the income bipolarization situation of Chinese residents,but the income bipolarization indicators based on the poverty-line grouping continuously show rising trend.Thus,under the background of effective control of income bipolarization trend of Chinese residents,the income and living situation of poor Chinese should be emphasized,and Chinese Government should further perfect income distribution system to improve income and living situation of the poor Chinese.