基于改进熵权法的水资源承载力评价——以曲陆坝区为例

Evaluation of water resources carrying capacity based on improved entropy weight method: A lase study in Qulu dam area

水资源是一种战略性自然资源,对于维护区域生态环境安全和促进社会经济可持续发展具有重要意义。通过构建水资源的模糊综合评价模型,利用秩比法和最小相对信息熵原理对传统熵权法进行改进。在耦合客观与主观因素的基础上,结合区域特点选取14个评价指标对曲陆坝区5个水平年水资源承载力进行评价分析。结果表明在无调水的情况下,5个水平年水资源承载力综合评价值分别为:0.479、0.390、0.335、0.287、0.283;在有调水的情况下,5个水平年水资源承载力综合评价值分别为0.446、0.367、0.323、0.351、0.365,通过比较分析,说明外流域调水能显著改善水资源承载力状况。

Water resource is one kind of strategic natural resource, which is of great significance for the maintenance of regionally ecological security and sustainable development of society and economy.Based on the fuzzy comprehensive evaluation model of water resources, this paper makes use of the rank ratio method and the minimum relative entropy principle to improve the traditional entropy weight method.Based on the coupling of objective and subjective factors and considering the regional characteristics, 14 evaluation indicators were selected to evaluate the water resources carrying capacity of Qu Lu dam area of five level years.The results show that in the case of no water transfer, the comprehensive evaluation of water resources carrying capacity are 0.479, 0.390, 0.335, 0.287,and 0.283, respectively.in the case of water transfer, the water resources carrying capacity of five years of Qu Lu dam area are 0.446, 0.367, 0.323, 0.351, and 0.365, respectively, which indicates water resources carrying capacity can be improved significantly by external basin water transfer.