横水水库水质污染状况及浮游植物群落特征分析  

Analysis of Water Pollution and Phytoplankton Community Characteristics in Hengshui Reservoir

作　　者：郑妙洁 ZHENG Miaojie(Meizhou Branch of Guangdong Hydrology and Water Resources Monitoring Center,Meizhou 514000,China)

机构地区：[1]广东省水文水资源监测中心梅州分中心,广东梅州514000

出　　处：《广东水利水电》2023年第2期57-60,共4页Guangdong Water Resources and Hydropower

摘　　要：以横水水库为研究对象,分析其2016—2021年期间的水质状况,利用相关性和主成分分析揭示污染的根源和影响因子,根据其浮游植物功能群特征,对横水水库的水生态状况进行分析评价。结果显示:(1)水库的主要环境影响因子为氨氮、硫酸盐和硝酸盐氮,主要是由于受到稀土矿浸矿剂的影响;(2)相比于2016年,2021年横水水库的浮游植物种类和生物量增加,浮游植物群落结构发生变化,优势度降低。研究表明,氨氮为横水水库最主要的污染物,稀土矿开采是其水质污染的主要原因之一;目前横水水库的营养状态仍为中营养,但是其水质状况有向好趋势,建议进一步加强流域地表水的定期监测。Taking Hengshui Reservoir as the research object, the water quality of Hengshui Reservoir during 2016-2021 is analyzed, the source and influencing factors of pollution are revealed by correlation and principal component analysis, and the water ecological conditions of Hengshui Reservoir are analyzed and evaluated according to the characteristics of its phytoplankton functional groups. The results show that:(1)The main environmental impact factors of the reservoir are ammonia nitrogen, sulfate and nitrate nitrogen, mainly due to the influence of rare earth ore leaching agent.(2)Compared with 2016, the species and biomass of phytoplankton in Hengshui Reservoir increased in 2021, the structure of phytoplankton community changed and the dominance decreased. The research shows that ammonia and nitrogen are the main pollutants in Hengshui Reservoir and rare earth mining is one of the main reasons for water quality pollution. At present, the nutritional status of Hengshui Reservoir is still medium nutrition, but its water quality has a good trend. Therefore, it is suggested to further strengthen the regular monitoring of surface water in the watershed.

关 键 词：水质污染 浮游植物 稀土矿 氨氮 

分 类 号：X824[环境科学与工程—环境工程]