摘要
为分析射洪县农村面源污染状况,采用输出系数模型并借助GIS平台,对射洪县面源污染负荷量进行估算,得到结果如下:研究区2016年总氮、总磷的输出负荷量分别为1 075.69,118.2 t/a,且二者空间分布较为一致;农村居民生活污水为最主要污染源,分别占TN、TP总负荷的61.09%和76.35%;模型估算负荷与实际监测值对比得到总氮、总磷负荷值相对误差为8.2%和12.3%,模型模拟具有较高的精度,能够为射洪县水体环境治理提供参考。
In order to analyze the non-point source pollution in Shehong Country,with the help of GIS,the pollution load was calculated by the export coefficient model.The calculation result showed that the total nitrogen（TN） and total phosphorus（TP）loads were 1 075.69,118.2 t/a,respectively,and the spatial distribution of TN and TP loads had the characteristics of uneven distribution; the contribution of the rural swage to NPS was the biggest,accounting for 61.09% and 76.35% of the total load of TN and TP respectively; the relative error were 8.2% and 12.3% of the total nitrogen and phosphorus load respectively by comparing the estimation load of modeling and the actual monitoring value.The results showed that the model had a high precision and could provide scientific data support for the water environment governance in Shehong County.
出处
《环境工程》
CAS
CSCD
北大核心
2018年第1期173-177,共5页
Environmental Engineering
基金
四川省科技支撑计划项目"四川省中小流域农村面源污染综合防治技术研究与示范"(2015SZ0212)
四川省应用基础项目"基于遥感蒸散发的青藏高原旱情监测研究"(LPM2014003)
关键词
输出系数模型
农业
面源污染
污染负荷
射洪县
the export coefficient model
agriculture
non-point source pollution
pollution load
Shehong County
