楚雄市地表河流龙川江2016-2020年水环境质量分析  

Analysis on water environment quality of Longchuan River in Chuxiong City from 2016 to 2020

作　　者：殷艾华 YIN Ai-hua(Chuxiong Municipal Enironmental Monitoring Station,Chuxiong 675000,China)

机构地区：[1]楚雄市生态环境分局生态环境监测站,云南楚雄675000

出　　处：《环境生态学》2022年第10期72-77,共6页Environmental Ecology

摘　　要：为了摸清约55万人口的楚雄市城镇人民生产生活对龙川江水环境质量的源强类型,掌握龙川江流经楚雄市城镇后水质年变化趋势,探索降低城镇生产生活对龙川江水质污染的方法,在连续5年对龙川江流经楚雄市城镇前后的两个监测点位的水质监测结果进行统计的基础上,以流入城镇前的监测断面结果为对照,系统对龙川江流出楚雄城镇的西观桥断面水质监测结果开展年变化情况及趋势进行研究分析,结果发现:2016—2018年3年间龙川江西观桥断面水质类别均为劣Ⅴ类;2019、2020年龙川江西观桥断面水质类别均为Ⅳ类,已达到国家和省水污染防治的目标;5年来,水质呈现逐渐变好的趋势,但单月监测均存在超标项目,水环境质量保护形势仍然严峻。今后龙川江的水污染防治策略应重点关注生活污水和农业面源污染两大源强的防控。In order to find out the strong source type of water quality of Longchuan River for the production and life of the people in Chuxiong City cities and towns with a population of about 550000,and to grasp the annual change trend of water quality of Longchuan River after it flows through the cities and towns of Chuxiong City,to explore the methods to reduce the water pollution of Longchuan River caused by urban production and life.Based on the statistics of the water quality monitoring results of two monitoring sites before and after the Longchuan River flows through the towns of Chuxiong City for five consecutive years,the results of the monitoring sections before the Longchuan River flows into the towns are compared,the results show that the water quality of the Xiguan Bridge in the three years from 2016 to 2018 is of the InferiorⅤType.In 2019 and 2020,the water quality of Longchuan County s Xiguanqiao section is classified as categoryⅣ,which has reached the national and provincial water pollution prevention and control targets,the situation of water environment quality protection of Longchuan River in Chuxiong City,Yunnan Province is still serious.In the future,the water pollution control strategy of Longchuan River should focus on the prevention and control of domestic sewage and agricultural non-point source pollution.

关 键 词：楚雄龙川江 河流水 水环境质量监测 水环境质量评价 年变化 

分 类 号：X522[环境科学与工程—环境工程] X824