通过计算基尼系数反映行业收入差距变化.利用GDP增长率作为控制变量建立误差修正模型,反映给定经济增长水平,外商直接投资对行业收入不平等的影响.利用误差修正模型的系数检验,判断外商直接投资对行业收入差距的影响方式和影响程度.实证结果表明1994年以后外商直接投资对行业收入不平等存在长期均衡关系.给定经济增长水平,外商直接投资增加会加大行业收入不平等程度,但增加幅度递减.
Gini coefficient was caculated to reflect the change of industry income inequality. The GDP growth taken as control variable, the error correction model was set up to reflect the impact of FDI to the industry income inequality. The path and degree of the effect of FDI on the industry income inequality was determined by the significance test.Empirical results show that long-term equilibrium relationship is hold between FDI and industry income inequality since 1994. Given the level of economic growth, the increase of FDI will increase the degree of income inequality industry, but the rate of increase is decreasing.