基于三阶段DEA与Malmquist指数分解的长江经济带水资源利用效率研究

doi:10.11870/cjlyzyyhj201701002

摘要/Abstract

摘要： 长江经济带水资源的合理有效使用为经济的可持续发展提供了重要保障。以长江经济带11省市为研究对象，运用三阶段DEA模型和Malmquist对2010~2014年11省市水资源的利用效率进行了静态和动态分析。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，纯技术效率均值和综合技术效率均值被低估，规模效率均值被高估，投入规模不足是扼制我国水资源利用效率提升的瓶颈。同时，东中西部省份的水资源利用效率差异显著，呈现“东部 > 中部 > 西部”的格局。通过对Malmquist指数分解可知，全要素生产率指数与技术变化值的演变趋势基本一致，反映了全要素生产率指数对技术变化的严重依赖。因此，扩大生产规模，加大科技投入和知识创新，优化和升级产业结构是提高水资源利用效率的重要途径。

关键词: 三阶段DEA模型, Malmquist指数, 综合技术效率, 纯技术效率, 规模效率, 全要素生产率(TFP)

Abstract: Rational and effective use of water resources in the Yangtze River economic belt provides an important guarantee for the sustainable development of the economy. In this paper, taking 11 provinces and cities of the Yangtze River economic belt as the research objects, we used a three-stage DEA model and the Malmquist index method to conduct static and dynamic analyses of the water resources utilization efficiency of 11 provinces in 2010-2014. The results showed that after removing the external environmental factors and random error factors, the mean pure technical efficiency and mean comprehensive technical efficiency were underestimated, the scale efficiency was overestimated, insufficient investment scale was bottleneck of our country's water resource utilization efficiency. At the same time, the differences of water resources utilization efficiency in the eastern and western provinces were significant, showing a pattern of "Eastern > middle > West". Using the Malmquist index decomposition we found that the evolution trends of total factor productivity index and technological change were basically the same, which reflected the serious dependence of the total factor productivity index on technological change. Therefore, to expand the scale of production, increasing investment in science and technology and knowledge innovation, optimizing and upgrading the industrial structure are important ways to improve water resources utilization efficiency.

Key words: three-stage DEA model, Malmquist index, comprehensive technical efficiency, pure technical efficiency, scale efficiency, total factor productivity

中图分类号:

TV211

卢曦, 许长新. 基于三阶段DEA与Malmquist指数分解的长江经济带水资源利用效率研究[J]. 长江流域资源与环境, 2017, 26(01): 7-14.

LU Xi, XU Chang-xin. STUDY THE UTILIZATION EFFICIENCY OF WATER RESOUCES IN YANGTZE RIVER ECONOMIC BELT BASED ON THREE-STAGE DEA AND MALMQUIST INDEX DECOMPOSITION[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2017, 26(01): 7-14.

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