我国地区收入差距变化趋势——基于基尼系数分解的分析

利用Dagum(1997)提出的分解方法,计算了我国东、中、西部及三地之间的基尼系数和贡献度。计算结果表明,我国的地区收入差距表现为东、中、西部之间的差距,其中又以东西和东中之间的差距为主,三大地区之间的差距自1990年以后有扩大的趋势,地区间的基尼系数贡献度占地区总基尼系数的比重已经达到80%;东部地区内部的收入差距要大于中、西部地区内部的差距,但东部各省之间的差距有缩小趋势,而西部各省的差距正在不断扩大,应当引起人们的重视。

Tendency of China''''s Regional Income Gap——Analysis based on the Decomposition of Gini index

This paper uses the decomposition method which Dagum(1997) proposed to calculate China's Gini index and Gini contribution among the east,middle and west regions.The result indicates China's area income gap is mainly income gap between regions,especially the gap between east and west and between east and middle.The income gap among the three regions has been bigger since 1990,and the proportion of the Gini contribution between regions occupied the total Gini index already reached 80%.The interior income gap in east is larger than that in the middle and west.The east gap in east region has reduced but the income gap in west has expanded during recent years,which should be attracted attention.