基于数据包络分析的江苏省水资源利用效率
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南京大学环境学院,南京大学环境学院,南京大学环境学院,南京大学环境学院,南京大学环境学院,南京大学环境学院,南京大学环境学院

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国家自然科学基金项目(40701063)


Water use efficiency of Jiangsu Province based on the data envelopment analysis approach
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school of Environment Nanjing University,school of Environment Nanjing University,,,,,

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    摘要:

    采用水足迹理论分析江苏省2000-2010年水资源的真实利用情况,同时从投入产出的角度出发,选取农业用水量、工业用水量、生活用水量、COD排放总量、固定资产投资总额和从业人员数作为投入指标,GDP和粮食产量作为产出指标,运用数据包络分析中的C2R和BC2模型对这11a间江苏省的水资源利用效率进行评价。研究表明:2010年江苏省的水足迹为778.28 m3,总体呈缓慢上升趋势。农业用水、工业用水和虚拟水贸易是江苏省水资源利用中的主要组成部分。11a间DEA有效年份占64%,投入冗余和产出不足均为0,即投入和产出达到最优状态。在DEA无效年份中存在冗余,存在资源浪费和污染高排放的情况。可以通过DEA投影结果对其进行改进,实现资源的最优配置。

    Abstract:

    This paper attempts to employ water footprint approach to analysis the real use situation of water resource in Jiangsu Province, and established C2R and BC2models of data envelopment analysis(DEA) from the input-output perspective, which incorporates agricultural water,industrial water,domestic water,total COD discharge,fixed asset investment and labor as input indicators, and GDP and food production as output indicators to evaluate the water resources use efficiency of Jiangsu Province from the year 2000 to 2010. The results have shown that the water footprint of Jiangsu is 778.28 m3, indicating a slowly rising trend. In addition, the agricultural water,industrial water and the virtual water trade are major parts of water resource use in Jiangsu Province. The effective year of DEA accounts for 64% during the 11 years, and the redundant inputas well as the insufficient output is zero value, which means that the input-output has achieved the optimal state. While the redundant input in the invalid years of DEA have shown the extra pollution and resources allocation is unreasonable, which can be theoretically resolved to arrive at the optimal equilibrium point through the analysis of the DEA projection.

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赵晨,王远,谷学明,赵卉卉,吴尧萍,朱晓东,陆根法.基于数据包络分析的江苏省水资源利用效率.生态学报,2013,33(5):1636~1644

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