浑河流域细河水环境承载力评估预警研究

多年来浑河流域细河一直为劣Ⅴ类水质,合理评估细河水生态环境承载力状态,对于细河流域社会经济发展与环境协调、改善细河水质具有重要意义。构建基于水环境、水资源、水生态的承载力评估预警指标体系,采用层次分析法对细河水生态环境承载力开展评估预警研究。结果显示,2018年细河水环境承载力超载(红色),水环境子系统和水资源子系统临界超载(黄色),水生态子系统超载(红色);2013—2018年细河水环境承载力总体呈下降趋势。

For many years,the Xihe River in the Hunhe River Basin has been inferior to the water quality of class V.A reasonable assessment of the water ecological and environmental carrying capacity of the Xihe River is of great significance for the coordination of the social and economic development of the Xihe River and the environment and the improvement of the Xihe River water quality.This paper constructs an evaluation and early warning index system based on the water environment,water resources,and aquatic ecology,and uses the analytic hierarchy process to evaluate and pre-warn the Xihe water ecological environment carrying capacity.The results showed that the water environment carrying capacity of Xihe River was overloaded in 2018(red),the water environment subsystem and the water resources subsystem were critically overloaded(yellow),and the water ecological subsystem was overloaded(red).The overall trend of the water environment carrying capacity of Xihe River in 2013-2018 is decreasing.