长江经济带水资源利用的动态效率及绝对β收敛研究--基于三阶段DEA-Malmquist指数法

DYNAMIC EFFICIENCY AND UNCONDITIONAL β CONVERGENCE OF WATER RESOURCES UTILIZATION ON THE YANGTZE RIVER ECONOMIC BELT:BASED ON THREE-STAGE DEA-MALMQUIST INDEX METHOD

利用三阶段DEA-Malmquist指数法,对2009~2014年长江经济带11省市水资源全要素生产率及其分解指数进行了测算和分析。研究结果表明:在剔除了外部环境因素和随机误差因素以后,长江经济带水资源的全要素生产率及其分解效率发生了显著变化,水资源全要素生产率年均增长7.2%,技术进步指数年均增长4.7%,技术效率指数年均增长2.4%,技术进步是推动长江经济带水资源全要素生产率增长的主要源泉。分区域来看,西部地区水资源全要素生产率和技术效率年均增长率最高,东部地区技术进步年均增长率最高。长江经济带水资源全要素生产率存在显著绝对β收敛,表明长江经济带内省际水资源全要素生产率差距正在缩小,最终都朝相同的稳态水平趋近。

In this paper,the three-stage DEA-Malmquist index method is applied to analyze the water resources total factor productivity and its resolution indexes of the eleven provinces（ municipalities） on the Yangtze River Economic Belt between 2009 and 2014. Eliminating the external environmental and random error factors,the results show that great changes have happened to the water resources＇ total factor productivity and the resolution efficiency. Regional water resources ＇ total factor productivity, technological progress index and technical efficiency yearly index raised about 7. 2%,4. 7%,and 2. 4%,respectively. The technological improvement is the main reason for the increase of the water resources total factor productivity on Belt. The western region water resources＇ total factor productivity and technical efficiency had the highest annual average growth rate,whereas the eastern region held the highest average annual growth rate in technology. The water resources total factor productivity of the Economic Belt exhibited a significant absolute β convergence,indicating the provincial gaps of the water resources total factor productivity was becoming small,and eventually reach to similar steady levels.