郑州市水资源承载力综合评价

Comprehensive evaluation of carrying capacity of water resources in Zhengzhou City

从水资源、经济、社会和生态环境4个方面选取17个指标构建评价指标体系,使用熵权法确定指标权重,运用TOPSIS模型对郑州市2007—2016年的水资源承载力水平进行综合评价。研究结果表明:(1)样本期内,郑州市水资源承载力综合评价值由0. 3336上升到0. 7007,总体呈稳步上升趋势,水资源承载力等级由"差"提升到"较好";(2)各子系统对水资源综合承载力的贡献逐年上升,其中生态环境子系统和经济子系统的贡献最大,社会子系统贡献相对稳定,而水资源子系统则因郑州市水资源时空分布不均,呈波动变化趋势。

An evaluation index system is established based on 17 indices selected from four aspects of water resources,economy,society and ecological environment. The entropy weight method is used to determine the weights of the indices. The carrying capacity of water resources in Zhengzhou City from 2007 to 2016 is comprehensively evaluated by using the TOPSIS model. The results show that:(1) During the sample period, the comprehensive evaluation value of carrying capacity of water resources in Zhengzhou City increases from 0. 3336 to 0. 7007,with a steadily rising trend,and the level of carrying capacity of water resources increases from "poor"to "better ".(2) The contribution of various subsystems to the comprehensive carrying capacity of water resources increases year by year. Among which,the ecological and environmental subsystems have the most contribution,while the contribution of the social subsystem is relatively stable,while the water resources subsystem has a fluctuating trend owing to the uneven spatial and temporal distribution of water resources in Zhengzhou.