我国港口外商直接投资差异的广义熵指数测度与分解

探讨我国港口外商直接投资的差异能揭示外商在我国港口的投资轨迹,对港口制定切实有效的引资政策具有积极意义.基于世界银行PPI数据库,利用广义熵指数测度了1991-2007年我国港口外商直接投资的差异,并从投资区域、项目类别及投资方式三个方面对此差异的特征进行了分解研究.量化分析显示,我国港口FDI呈现出区域集中、项目类别集中及投资方式集中的特征,港口FDI的差异主要表现在同一港口群内,同一项目类别内部及同一投资方式内部,且其分布具有显著的分形特征.

Measuring and Decomposing of Foreign Direct Investment in China's Ports Based on Generalized Entropy Index

The discussion of the differences of foreign direct investment in China's ports will reveal the track of foreign capital's investment,and has positive significance for us to make effective policy to absorb foreign investment in port.Based on the World Bank's PPI database,this paper uses the Generalized Entropy Index's to measure the difference of foreign direct investment in China's ports from 1991 to 2007,and then decomposes this difference from three aspects. From the angle of investment region,project category and investment method,quantitative analysis has shown,FDI of China's ports has the characteristics of regional concentration,project category concentration and investment method concentration.The difference of FDI in China's port mainly comes from the same port cluster,the same project category and the same investment method,and its distribution has notable features of fractal.