基于行业视角的收入差距倒U假说检验

An Empirical Test for the Inverse-U Hypothesis of Income Gap on the View of Industry

行业收入差距的快速拉大是推动我国居民整体收入差距扩大的一个重要因素,其变动趋势在一定程度上反映出了居民整体收入差距的变动特征。行业收入差距的变动与人均GDP之间呈现倒U型关系,其拐点大约出现在人均GDP为33000元时(以2003年价格衡量)。此外,垄断因素起到拉大行业收入差距的效应,而人力资本则与此相反,对行业收入差距的扩大有明显的抑制作用。

Industry income gap became a significant force to promote residents overall income gap widening. To some extent, the trend of changes in industry income gap reflects the characteristics of changes in the residents＇ income gap. And the inflection point appears at the per capita GDP of 33000 yuan/person （2003 constant prices measure） . In addition, the monopoly factors has the effect of widening industry income gap, by contrast human capital has a significant negative effect on industry income gap.