基于AHP和熵权法组合权重的京津冀地区水循环健康模糊综合评价

在阐明健康水循环内涵的基础上,构建涵盖水资源、水环境、水生态、水效用和水灾害等5个准则层,包括降水量、人均水资源量、亩均水资源量、地下水供水占比等18个指标的水循环健康评价指标体系,采用层次分析法与熵权法组合赋权,运用模糊综合评价法评价了京津冀地区2009-2018年水循环健康状况。评价结果显示:近10年京津冀地区水循环健康状况总体呈逐步向好趋势,北京、天津和河北水循环健康等级分别为亚健康、一般和亚病态;中水供水率、平原地下水埋深下降量、河湖调蓄能力、万元工业增加值用水量等是影响京津冀地区健康水循环的主要指标,但各指标间发展不平衡,仍有较大提升空间。

A fuzzy comprehensive evaluation of water cycle health in Beijing-Tianjim-Hebei region based on combined weights of AHP and entropy method

Based on clarifying the connotation of the healthy water cycle, five criterion layers covering water resources,water environment, water ecology, the water utility, and water disasters were constructed, including precipitation, per capita water resources, per mu water resources, and groundwater supply ratio. The water cycle health evaluation index system of other 18 indicators, using the combination of analytic hierarchy process and entropy met hod to assign weights and using fuzzy comprehensive evaluation method to evaluate the water cycle health status of the Beijing-Tianjin- Hebei region from 2009 to 2018.The evaluration results show that: the overall water cycle health in the Beijing-Tianjirn-Hebei region has gradually improved in the past ten years. The water cycle health levels in Beijing, Tianjin, and Hebei are sub-healt hy, normal, and sub-morbid; the storage capacity of rivers and lakes and thew ater consumption of 10,000 yuan of indust rial added value are the main indicators that affet the healthy water cycle in the Beijing-Tianjin-Hebei region.However, the development of the various indicators is not balanced, and there is still much room for improvement.