倒U假说的推演及其在中国的检验

公平和效率问题是经济学界长期关注的重点问题之一，特别是自库兹涅茨提出倒U假说后，该问题再次受到人们的重视。半个世纪以来，各国经济学家对倒U假说的理论推进及实证检验进行了大量卓有成效的工作，然而其结论却不尽相同。通过对中国近二十年来分省（市）城乡收入差距的实证分析，验证了倒U假说在中国的适用性，认为政策、地区等因素是促成倒U假说的重要因素。

The Development of the Inverted- U Hypothesis and Its Testing in China

The relationship of equity and efficiency is one of the most important issues in the realm of economics for a long time.After the inverted-U hypothesis was brought forward by Kuznets,this issue was once more received much recognition.Economists coming from different countries have done much effort to perfect this theory and tested it positively since then,though the results were diverse.This paper based on the nearly twenty years data of urban-rural income inequality of Chinese provinces proves that the inverted-U hypothesis does exist in China,and educes policy and region differences are also important factors to this inverted-U curve of China besides its development level of economy.At last,this paper brings forward some correspondence policy advice.