基于SE-DEA-IAHP方法的贵州省岩溶地区水资源可持续利用效率评价

贵州省位于我国西南喀斯特地区的中心，地貌类型以山地为主，河谷深切，水资源开发利用难度大，提高水资源利用效率对于贵州省的可持续发展具有重要意义。基于水资源利用、社会经济、生态环境等3个一级指标构建水资源评价指标体系。在此基础上，以次级指标为松弛变量，利用超效率DEA模型（SE-DEA）计算一级指标超效率值；采用区间层次分析法（IAHP）计算一级指标权重向量。基于SE-DEA和IAHP方法建立水资源综合评价模型SE-DEA-IAHP，得出水资源利用总效率值。结果表明：贵州省水资源利用效率值较低，2015-2019年总效率值在1附近动态变化；从一级指标来看，社会经济指标的IAHP权重值最大，但水资源转换效率并不高，说明贵州省经济的高速发展也带来了一定程度的水资源浪费；考虑到贵州省特殊的岩溶地质条件，增加相应的经济管理投入、优化产业水量配置结构和提高用水技术手段是贵州省水资源可持续发展的关键。

Evaluation of sustainable utilization efficiency of water resources in karst areas of Guizhou Province based on SE-DEA-IAHP

Guizhou Province is located in the center of the karst region in southwest of China, its topography is dominated by mountains with deep river valleys, which makes it difficult for the development and utilization of water resources. So, improving water resources utilization efficiency is of great significance to the sustainable development of Guizhou Province. Here, a water resources evaluation index system was established based on three first-level indicators of water resources utilization, social economy and ecological environment. On this basis, with secondary indicators as slack variables, the super-efficiency DEA model (SE-DEA) was used to calculate the super-efficiency value of the first-level indicators, and the interval analytic hierarchy process (IAHP) is used to calculate the weight vector of the first-level indicators. Based on the super-efficiency DEA and IAHP methods, a comprehensive water resources evaluation model SE-DEA-IAHP was established, and the overall value of water resources utilization efficiency was obtained. The results show that the efficiency value of water resources utilization in Guizhou Province from 2015-2019 was low, which fluctuated dynamically around 1; in view of the first-level indicators, the social and economic IAHP weight value was relatively large, but the water conversion efficiency was not as high as expected, indicating that the rapid economic development brought some waste of water resources; taking into account the special karst geological conditions in Guizhou Province, the key to achieve sustainable development of water resources is to maintain a virtuous cycle of water resources, increase the corresponding economic management investment, optimize the industrial water allocation structure and improve the technical means of water utilization in Guizhou Province.