洱海北部典型小流域农业氮磷流失特征的初步研究  

Primary Study on Characteristics of Nitrogen and Phosphorus Losses in the Typical Small Watershed of the Northern Area of Erhai Lake

作　　者：唐佳[1] 李德品[1] 姜旭[1] 

机构地区：[1]大理学院东喜玛拉雅资源与环境研究所,云南大理671003

出　　处：《大理学院学报（综合版）》2014年第6期60-63,共4页Journal of Dali University

基　　金：农业部公益性行业(农业)科研专项资助项目(201003014-6)

摘　　要：为揭示洱海北部区域农业面源污染物氮磷流失的特征,以凤羽河小流域为研究对象,于2011年7月对1次降雨-径流的全过程进行了氮磷浓度的测定,分析了降雨过程中污染物负荷、浓度随降雨-径流变化过程的特征。结果表明,污染物负荷变化与流量变化呈现出大致相同的趋势;污染物浓度的峰值提前于流量峰到达。今后开展相关监测时应将降雨时间间隔、上游生产生活方式考虑进来,以更好地阐释降雨-径流过程中凤羽河小流域农业氮磷流失的规律性。The relationships of pollutant concentrations and precipitation-runoff were monitored at the outlets of the Fengyu River in July 2011. The results showed that the loads of nitrogen and phosphorus increased with the increasing of flux. Furthermore, the peak of pollutant concentrations early occurred than the peak of flux. For reasonably interpreting law of no-point source pollutants losses, the interval time of rainfall as well as production and life style of upstream should be considered in the future study.

关 键 词：面源污染 降雨径流 氮磷 

分 类 号：X524[环境科学与工程—环境工程]