四川环境2025，Vol.44Issue(2)：61-69,9.DOI:10.14034/j.cnki.schj.2025.02.008
九洲江流域水质变化趋势及污染来源分析
Analysis on Water Quality Change Trend and Pollution Sources in Jiuzhou River Basin
摘要
Abstract
In order to deeply analyze the temporal and spatial variation trends of water quality and the main sources of pollution in the Jiuzhou River Basin since the implementation of the horizontal ecological compensation work in the upstream and downstream,the single factor evaluation method and the improved Nemerow pollution index method were used in this research to evaluate the water quality of the Jiuzhou River Basin,and the investigation results of the sewage outlets into the river in the JiuzhouRiver Basin and the pollution source tracing results were also taken into account to analyze the causes of pollution.The research results showed that the annual variation trend was generally good,but there were still over-limit sections.The over-limit sections were located in the upper reaches where the water quality was mostly Class Ⅳ to Class Ⅴ,and the water quality in the middle and lower reaches was mostly Class Ⅲ to Class Ⅳ.The pollution of 75％of main stream sections and 66.67％of tributary sections mainly occurred in the dry season.The main over-limit substances in the basin were nitrogen and phosphorus pollutants,and the overall trend of nitrogen and phosphorus pollution concentrations in the dry season was high.The main pollution sources of the upper,middle and lower reaches of the river were different.The pollution in the upper reaches was mainly from urban household wastes,the pollution in the middle reaches was mainly from aquaculture and agricultural non-point sources,and the pollution in the lower reaches was mainly from urban and rural household wastes.Targeted control measures should be proposed according to the pollution sources in different regions to ensure the continuous improvement of water quality in the Jiuzhou River Basin.关键词
水质变化趋势/单因子评价法/改进的内梅罗污染指数法/污染来源/九洲江Key words
Water quality change trend/single factor evaluation method/improved Nemerow pollution index method/pollution source/Jiuzhou river分类
资源环境引用本文复制引用
周良洁,徐荣乐,刘凯,宋晓薇,王旭,王明,唐朝武..九洲江流域水质变化趋势及污染来源分析[J].四川环境,2025,44(2):61-69,9.基金项目
广西重点研发计划(重点流域污染多维指纹精准溯源与防控技术研究及应用示范,桂科AB24010019) （重点流域污染多维指纹精准溯源与防控技术研究及应用示范,桂科AB24010019）
广西科技重大专项(面向东盟水污染防治技术及装备科技成果转移转化,桂科AA23073008) （面向东盟水污染防治技术及装备科技成果转移转化,桂科AA23073008）
广西环科院科研创新基金资助(九洲江文车桥-山角段蓝藻爆发成因及对策研究,HKYCX-2022-5). （九洲江文车桥-山角段蓝藻爆发成因及对策研究,HKYCX-2022-5）
