在对中国1992-2006年省域投资环境进行综合评价的基础上,利用广义熵MLD指数,对中国投资环境地区差异进行了测度与分解。结果表明,中国投资环境区域差异明显,而且差异主要来源于地区内部,但时间上,无论地区间还是地区内部的差异总体都呈逐步缩小趋势;MLD指数动态分解显示,地区内部差距变动是缩小总体地区差距的主导方面,地区之间差距变动是缩小总体差距的重要力量,且到后期有增强趋势,经济增长因素起到了扩大总体差距的作用,但影响有限。以上发现对我国完善地区投资环境具有重要政策意义。
Based on the comprehensive evaluation of the provincial investment environment for the period 1992 - 2006 in China, the spatial disparity of the investment environment is measured and decomposed by employing a generalized entropy index, MLD. The result shows, the regional disparity or inequality of the investment environment in China is very obvious, whose main source is from the intra - regions. However, temporally, either the interregional or the intraregional disparity decreases gradually as a whole. The dynamic decomposition of MLD index shows that the change of the intraregional disparity is the dominant factor to cut down the whole regional disparity, but the interregional disparity also is an important force to lessen the whole regional disparity and has a trend to increase. The economic growth is a factor to increase the whole regional disparity but its effect is very limited. The findings above have important policy implications to perfect the regional investment environment in China.