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水资源利用效率评价是水资源研究领域中的重点问题之一。针对效率评价中采用单一方法存在的问题,本文首先以单一评价方法中常用的熵值法、均方差法、离差法对全国水资源利用效率进行评价。当不同的评价方法对同一评价对象得到的结果不同时,提出使用平均值法、Boarda法、Compeland法以及模糊Boarda法4种组合评价方法对单一评价结果进行组合,同时按迭代修正的思路,当组合评价结果不能通过Spearman等级相关系数一致性检验时,反复使用组合评价,直至通过检验。对全国31个省级行政区水资源利用效率开展应用分析,结果表明,北京、天津、山西等地用水效率高,而宁夏、广西、新疆等地用水效率较低;最后将31个省级行政区水资源利用效率按其特点划分为三类。
Water resource utilization efficiency evaluation is one of the key issues in the field of water resources research. Aiming at the problems of single method in efficiency evaluation, this paper first evaluates the water use efficiency of China using the entropy method, mean square error method and dispersion method commonly used in single evaluation method. When different evaluation methods have different results for the same evaluation object, a combination of average evaluation method, Boarda method, Compeland method and fuzzy Boarda method is proposed to combine the single evaluation results. At the same time, according to the idea of iterative correction, when Combination evaluation results can not pass Spearman rank correlation coefficient consistency test, repeated use of combination evaluation, until the test. The application analysis of water resources utilization efficiency of 31 provincial-level administrative regions in China shows that water use efficiency is high in Beijing, Tianjin and Shanxi, while water use efficiency in Ningxia, Guangxi and Xinjiang is lower. Finally, 31 provincial-level administrative water Resource utilization efficiency is divided into three categories according to their characteristics.