基于组合权重TOPSIS模型的新乡市水资源承载力评价

Evaluation of water resources carrying capacity of Xinxiang City based on combined weight TOPSIS model

为了准确评价新乡市水资源承载力状况,构建了由“水资源-社会-经济-生态”组成的水资源承载力评价指标体系,采用熵值法和层次分析法相结合的组合权重赋权的TOPSIS模型对新乡市2006-2018年的水资源承载力进行综合评价,并对评价结果进行障碍度分析。结果表明:2006-2018年新乡市水资源承载力在逐年提升,中间虽有所降低,但整体上呈现逐年增强的趋势。新乡市水资源承载力发展的主要障碍因子集中在生态和水资源维度方面,生态环境用水率是阻碍水资源承载力提升的第一障碍因子;产水模数是阻碍水资源承载力提升的第二障碍因子;供水模数、引黄水量和城市污水处理率是阻碍水资源承载力提升的第三障碍因子。今后新乡市的发展需要注重生态环境的保护和引黄水量利用效率的提高,同时要促进节水产业和第三产业的发展。

To accurately evaluate the carrying capacity of water resources in Xinxiang City,a water resources carrying capacity assessment index system composed of“water resources-society-economy-ecology”was constructed,and TOPSIS was used to combine the entropy method and the analytic hierarchy process to assign weights.The water resources carrying capacity of Xinxiang City from 2006 to 2018 was comprehensively evaluated using this model,and then the evaluation results were analyzed by the obstacle degree model.The evaluation results showed that the water resources carrying capacity of Xinxiang City has been increasing year by year from 2006 to 2018.Although there were decreases in the span of time,the overall situation showed an improving trend;the obstacle degree results showed that the main obstacles hindering the development of Xinxiang City’s water resources carrying capacity were mainly the ecological and water resources dimensions.Eco-environmental water use rate was the principal obstacle factor hindering the improvement of water resources carrying capacity,water production modulus came the second,whereas water supply modulus,water use of the Yellow River and treatment rate of domestic sewage were the tertiary factors.In the future,more attention should be paid to the ecological environment protection and the improvement of the utilization efficiency of water use of the Yellow River for the development of Xinxiang City.At the same time,it is necessary to promote the development of water-saving industries and tertiary industries.