摘要
[目的]对2014—2020年北洛河干流4个监测断面的水质状况进行分析和评价,为进一步改善该流域水环境状况提供理论依据。[方法]根据北洛河水量的年内分配规律,对丰水期、平水期和枯水期进行划分,采用主成分分析和综合水质标识指数法,对北洛河主要污染指标进行筛选和评价。[结果]COD,氨氮和氟化物是影响北洛河水体水质最显著的指标。从沿程分布上看,北洛河干流上中游水质最好,下游水质相对较差;从时空分布上看2018年之后北洛河干流水质改善明显,基本满足水功能区Ⅲ类水质要求。[结论]北洛河上中游河段主要污染源来自于沿岸城镇生活污水和畜禽养殖废水排放;下游河段煤化工等企业工业废水和氮肥施用引起的农业面源污染是影响河道水质的主要因素。
[Objective] The water quality of four monitoring sections of the main stream of the Beiluo River from 2014 to 2020 were evaluated and analyzed in order to provide a basis for further improving the water environment of the river basin. [Methods] The main pollution indicators of the Beiluo River were screened and evaluated using principal component analysis and a comprehensive water quality identification index method according to the law of intra-annual distribution of water volume in the Beiluo River. A given year was divided into the wet season, the flat water season, and the dry season. [Results] Chemical oxygen demand, ammonia nitrogen, and fluoride were the most significant indicators affecting the water quality of the Beiluo River. From the distribution along the course of the river, the water quality in middle reaches of the main stream of Beiluo River was the best, followed by the upper reaches. The water quality in the lower reaches was relatively poor. The water quality in the main stream of the Beiluo River improved significantly after 2018, basically meeting the requirements of water functional area Ⅲ water quality. [Conclusion] The main source of pollution in the upstream and midstream sections of Beiluo River came from the discharge of domestic sewage and livestock breeding wastewater from coastal towns. Industrial wastewater from the coal chemical industry and other enterprises in the downstream section of the river and agricultural surface source pollution caused by nitrogen fertilizer application were the main factors affecting the water quality of the river.
作者
张翔
李愫
Zhang Xiang;Li Su(Ecological Environment Monitoring and Scientific Research Centre of Yelow River Basin Ecology and Environment Administration Ministry of Ecology and Environment,Zhengghou He'nan 450003 China;He'nan Industry and Trade Vocational Colege Zhenghou He'nan 450003,China)
出处
《水土保持通报》
CSCD
北大核心
2022年第4期153-160,171,共9页
Bulletin of Soil and Water Conservation
基金
生态环境部财政拨款项目“区域水生态环境保护责任落实与项目管理”(WX2021-0775)。
关键词
北洛河
主成分分析
综合水质标识指数
水质分析
Beiluo River
principal component analysis
comprehensive identification index
water quality analysis
作者简介
第一作者:张翔(1989-),男(汉族),河南省郑州市人,硕士,工程师,主要从事生态环境监测与评价研究。Email:zhangx198903@163.com;通讯作者:李愫(1992-),女(汉族),河南省郑州市人,硕士,助教,主要从事环境空间规划设计。Email:18530099109@163.com。
