摘要
为精准治理流域非点源氮磷污染,基于SWAT模型,运用本地区第二次全国污染源普查数据和2000—2019年流域水文、水质数据,开展湘江永州流域非点源氮磷污染模拟。结果表明:湘江永州流域建立的SWAT模型具有较好的模拟效果,流域2005—2019年的总氮月均污染负荷为383.40~17 998.70 t/m;总磷月均污染负荷为64.62~567.86 t/m,总氮和总磷各月污染负荷均与各月降雨量呈显著相关关系;农田和林地是本流域总氮、总磷污染负荷总量最大的2种用地类型,但两者之间单位面积输出的污染负荷强度却相反,林地对流域水污染防控具有正面效应,农田种植面源污染是非点源氮磷污染治理的重点。
In order to accurately control non-point source nitrogen and phosphorus pollution in the watershed,based on the SWAT model,this article applied for the region's second national pollution source survey data and 20 years of watershed hydrological and water quality data to carry out a simulation of non-point source nitrogen and phosphorus pollution in the Yongzhou basin of the Xiangjiang River.The results indicated that:the SWAT model had a good simulation effect.From 2005 to 2019,the monthly average output load of total nitrogen and total phosphorus were 383.40-17 998.70 t/m and 64.62-567.86 t/m respectively.the monthly output load of total nitrogen and total phosphorus had a significant correlation with the monthly rainfall.Farmland and Forest land were the land types with the largest pollution load of total nitrogen and total phosphorus in this watershed.On the contrary,the pollution load intensity per unit area between them was opposite.Forest land had a positive effect on water pollution prevention and control in the watershed.The Non-point source pollution from Farmland planting was the focus of non-point source nitrogen and phosphorus pollution control.
作者
武力
刘慧莹
向超
王敦球
陈喆
WU Li;LIU Huiying;XIANG Chao;WANG Dunqiu;CHEN Zhe(Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology,College of Environmental Science and Engineering,Guilin University of Technology,Guilin 541004,China;Environmental Protection Bureau of Yongzhou Economic and Technological Development Zone,Yongzhou 425000,China;Yongzhou Hydrology and Water Resources Investigation Bureau of Hunan Province,Yongzhou 425000,China;Guangxi Normal University,Key Laboratory of Ecology and Environmental Protection of Rare and Endangered Animals and Plants,Ministry of Education,Guilin,Guangxi 541006,China)
出处
《中国环境监测》
CAS
CSCD
北大核心
2023年第2期65-74,共10页
Environmental Monitoring in China
基金
国家自然科学基金资助项目(51638006)
广西创新研究团队项目(2018GXNSFGA281001)
广西科技基地和人才专项(桂科AD19110012)
漓江流域重金属污染农田生态修复与景观利用关键技术开发与应用项目(20190219-3)。
关键词
湘江永州流域
SWAT模型
氮磷污染
Yongzhou Basin of Xiangjiang River
SWAT model
Nitrogen and phosphorus pollution
