城镇中等收入居民相对收入水平的实证研究——以省际横截面数据检验库兹涅茨假设

An Empirical Study on the Relative Income Level of Middle-income Urban Residents

以城镇中等收入居民为研究对象,通过对2000年省际横截面数据的研究发现,中间阶层的收入份额表现出线性下降的趋势,实证检验拒绝了库兹涅茨倒U假设。相对收入水平的下降,表明该阶层在经济增长中获得了利益,但分享份额低于社会平均水平。政府财政控制、税收调整、公共投资和居民受教育水平等因素对中等收入阶层未发挥显著的作用,而存在一定影响的"国有经济投资比例"和"教育事业费占财政支出比例"处于相对下降的趋势中,从而造成该群体相对收入水平的下降。

The present research, focused on the middle-income urban population, and based on 2000's provincial statistic data, demonstrates that the relative income level of this group shows a linear decline. This indicates that although the middle-income group got benefits from economic growth, their participation share is smaller than social average level. It is observed that factors such as government fiscal control, taxation regulation, public investment, education level of the population and etc. have little effect on this group. Meanwhile, the situation, in which there is a decline of 'the proportion of investment in state-owned economy' and 'the proportion of education in fiscal expenditure', results in a decline of the relative income level of this group.