摘要
云龙水库是昆明市最大的城市集中式饮用水源地。水源区农业非点源污染是影响水库水质的主要来源,因此分析水库径流区氮磷非点源污染负荷与来源构成,可为饮用水源区水质保护提供科学依据。采用输出系数模型法,对昆明市云龙水库径流区氮、磷负荷的产生量与入库量进行了估算。结果表明:(1)云龙水库径流区氮、磷非点源污染负荷产生量分别为2 079.8和454.32t/a,入库量分别为207.98和24.73t/a。(2)从不同乡镇分析,撒营盘镇的氮、磷负荷产生量最高,云龙乡和茂山镇产出量较低,其余乡镇产生量相近。(3)从不同污染源类型分析,该区非点源污染的主要污染源为农村生活污染和畜禽粪便污染。
It is important to find out the load and source for the non-point source pollution about nitrogen and phosphorus in the runoff field of Yunlong reservoir in order to provide a scientific basis to protect water qual- ity. The nitrogen and phosphorus pollution loads in Yunlong reservoir runoff field were estimated according to the approach of export coefficient modeling. The results showed that. （1） The total nitrogen and total phosphorus loads of non-point source in Yunlong reservoir runoff field were 2 079.8 and 454.32 t/a respec- tively and the pollution loads in reservoir were 207.98 and 24.73 t/a respectively. （2） Nitrogen and phos- phorus loads in Sayingpan town generated the highest volume, Yunlong and Maoshan town export were the lowest, and the remaining towns produced nearly. （3） The main pollutant sources were domestic pollutant and poultry excrement pollutant.
出处
《水土保持通报》
CSCD
北大核心
2013年第6期274-278,284,共6页
Bulletin of Soil and Water Conservation
基金
云南省社会发展科技计划项目"云龙水库水源区面源污染控制关健技术研究与示范"(2009CA026)
云南省教育厅重大项目(ZD2011001)
关键词
非点源污染
输出系数模型
负荷
云龙水库
non-point pollution
export coefficient model
pollution load
Yunlong reservoir
