汉江流域基于模糊物元评价和数据包络分析的水资源用水效率评价

EVALUATION OF WATER USE EFFICIENCY BASED ON FUZZY MATTER ELEMENT MODEL AND DEA IN HANJIANG RIVER BASIN

结合当前水利部在实施最严格水资源管理过程中对用水效率控制的要求,构建了涵盖工业、农业、生活、生态的用水效率评价指标体系和评价标准,采用基于熵权的模糊物元评价法和数据包络分析法(DEA)对汉江流域各行政区2010、2012和2014年的用水效率进行了评价。结果显示:两种方法所得结果一致,即汉江流域各行政区2014年的用水效率均有大幅度提高,主要集中在较高和中等水平;除武汉市用水效率达到最佳水平之外,其他各行政区均为DEA无效,且规模收益均为规模递增,说明汉江流域各地区已经采取措施来提高用水效率,并取得了初步成效,但仍存在很大的节水潜力,需通过节水技术进步和产业结构调整来提高用水效率。此研究结果可为汉江流域水资源利用和节水措施提供参考和依据。

Considering the Ministry of Water Resources ＇ demands on controlling water use efficiency in the procedure of implementing the most stringent water management,the water use efficiency evaluation indicator system and the appropriate evaluation criteria,covering agricultural,industrial,households and ecological water use,were established in this paper. The entropy weight-based fuzzy matter element evaluation method and the DEA（ Data Envelopment Analysis） were applied to the study of water use efficiency evaluation in the Hanjiang River Basin for 2010,2012 and 2014. The results indicated that both methods generated identical conclusions.Compared to 2010 and 2012,the water use efficiency of 2014 of all administrative regions of the study area increased remarkably,reaching the grade of medium to high. Most regions were identified as DEA invalid except Wuhan city,whose water use efficiency reached the best level. The results implied that,although these regions were implemented effective measures to improve water use efficiency, there still exists great water saving potential. Advanced water saving technology and industrial restructuring are probably needed to further improve water use efficiency. This study provided a useful management basis for effective water utilization and saving measures in Hanjiang River Basin.