基于超效率DEA模型的陕晋两省水资源利用效率评价

Water Use Efficiency in Shaanxi and Shanxi Province AnalyzedUsing the Super Efficiency DEA Model

【目的】从"水资源条件-用水情况"、"水资源条件-社会经济"和"用水情况-社会经济"方面,评价2017年陕西和山西省各市水资源产出效率。【方法】选取反映水资源条件、用水情况和经济状况的4项、6项和5项指标,运用超效率DEA模型(SE-DEA),选取资源型缺水的陕晋两省21个地级市为研究对象,对各地级市的水资源利用效率进行了评价。【结果】水资源条件的用水产出情况,仅西安、太原、咸阳、渭南和运城市有效;水资源条件的经济产出,有效的城市仅占14.29%;用水情况的经济产出显示仅商洛和安康市不理想,其余19个城市均DEA有效。陕西省和山西省在水资源条件受限、水资源条件产出和水资源条件经济产出整体效率不高的情况下,用水情况的经济产出较为理想。【结论】通过调整地下水资源量投入的配置方式,可以提高水资源条件产出和水资源条件经济产出的有效性;优化城镇公共用水量和第一产业结构,可分别提高水资源条件产出和水资源条件经济产出的有效性。

【Objective】The aim of this work is to evaluate the utilization efficiency of water resources in 21 cities in Shaanxi and Shanxi provinces of China,based on three relationships:“water resource condition-water resource utilization”,“water resource condition-socioeconomy”and“water resource utilization-socioeconomy”【.Method】The evaluation was based on the super-efficiency data envelopment analysis(DEA)model,and considered four water resource condition indices, six water resource utilization indices, and five socioeconomic indices.【Result】① In all21 cities, the water resource utilization condition was effective only in Xi’an, Taiyuan, Xianyang, Weinan andYuncheng. ② Only 14.29% of the 21 cities were productively effective in economic output of their water resources;③ In all but Shangluo and Ankang , the economic output of the water resource utilization was DEA effective. It ishence manifested that even though water resources in the two provinces are scarce and the outputs of their waterresources is economically inefficient, the economic output of the water utilization cloud still be effective.【Conclusion】The efficiency of overall output and economic output of the water resources in the two provinces canbe improved by adjusting the allocation of groundwater. Optimizing urban water consumption and restructuringprimary industries can improve the efficiency of overall output and economic output of the water resourcesrespectively.