Assessing regional environmental efficiency in China with distinguishing weak and strong disposability of undesirable outputs
Assessing regional environmental efficiency in China with distinguishing weak and strong disposability of undesirable outputs
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DOI：
10.1016/j.jclepro.2019.04.207
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发表时间：
2019-08
影响因子：
11.1
通讯作者：
Sheng-Ren Piao;Jian Li;C. Ting
中科院分区：
文献类型：
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作者：
Sheng-Ren Piao;Jian Li;C. Ting
在过去的30年里，中国经济取得了令人瞩目的增长，但同时也伴随着不良产出。在数据包络分析（DEA）模型中，对不良输出的弱假设和强假设一直是讨论的焦点。为了对环境效率进行综合衡量，本文分别提出了考虑弱可丢弃性、强可丢弃性和区分不良产出弱可丢弃性和强可丢弃性的三种DEA模型。结合Malmquist-Luenberger生产率指数，对2005 - 2014年中国30个省区的环境效率及其动态变化趋势进行了评价。结果表明，区分不良产出的技术特征对不同地区的最终环境效率得分有显著影响。然而，全国的环境效率在这十年中并没有表现出任何增加的趋势。提高中西部地区的环境效率是摆在中国政府面前的一项紧迫任务。Malmquist-Luenberger生产率指数的变化趋势与技术变化呈相似的形状。技术进步是提高环境效率的主要动力。提出了今后提高中国区域环境效率的相关建议。
China has developed a remarkable economic growth in the past 30 years by accompanying with undesirable outputs. The assumptions of weak and strong of undesirable outputs have become the focus discussion in data envelopment analysis (DEA) models. To have a comprehensive environmental efficiency measurement, this paper proposes three DEA models considering weak disposability, strong disposability and distinguishing weak and strong disposability of undesirable outputs, respectively. We further combine with the Malmquist-Luenberger productivity index to assess the environmental efficiency and the dynamic change trend of 30 provinces in China from 2005 to 2014. The results show that distinguishing technical features of undesirable outputs makes a significant difference to final environmental efficiency score at different regions. The environmental efficiency of the whole nation, however, does not show any increasing trend during the ten years. Enhancing environmental efficiency of central and west area is an urgent task for Chinese government. The change trend of Malmquist-Luenberger productivity index and technological change shows a similar shape. Technical progress is the main driving force to enhance the environmental efficiency. Relevant suggestions are presented for improving the regional environmental efficiency in China in the future.