中文摘要：

以我国东部、中部和西部三大区域作为考察的地域单元，采用相对发展率测量了我国各省的经济发展差距，并通过多层次分解的Theil指数描述了我国东中西三大区域的经济差距以及贡献率的时空演变特征。研究发现：我国各省经济的相对发展率差距很大；三大区域内部经济差距存在“俱乐部收敛”现象，经济差距正在逐年拉大；从贡献率的变动趋势上看，东部和中部内部差距对全国整体差距的贡献率持续下降，而西部的贡献率呈波动特征；三大区域之间的经济差距从1979年以来对全国整体经济差距的贡献率呈持续增大趋势。

英文摘要：

This paper takes the three regions in China as investigated regional unit, and measures disparities between provinces , disparity between the three regions and the contribution rate with relative development efficiency and Theil index. It discovers that disparity of relative development efficiency among provinces remains big. The disparities between the three regions exists club convergence and the expansion of regional disparity has been growing ; contribution rates of eastern and middle part have been declined while western part＇s presents fluctuation characteristics ; contribution rate of the disparity among the three regions to the internal disparity has a continuous increasing trend since 1979.