摘要
基于输出系数法和等标负荷法对萩芦溪流域农业面源污染负荷进行了研究,选取总氮(TN)、总磷(TP)两个重要污染物指标,对流域内各乡镇及主要污染源的TN、TP负荷进行估算,并运用GIS软件Mapinfo绘制专题地图。结果表明,萩芦溪流域各乡镇TN等标排放量为江口镇>三江口镇>庄边镇>新县镇>萩芦镇>大洋乡>白沙镇,主要污染源为农村人口、畜禽养殖和耕地;TP等标排放量为三江口镇>江口镇>新县镇>梧塘镇>白沙镇>庄边镇>萩芦镇,主要污染源为畜禽养殖、农村人口。
Based on the methods of export coefficient and equal standard pollution loading,the paper studied the pollution loads of agricultural nonpoint source in Qiulu watershed,calculated the pollution load of total nitrogen(TN) and total phosphorus(TP) of the main pollution source of each township in the watershed through selecting the two important indexes of TN and TP and drew thematic maps by using GIS software Mapinfo.The outcomes show that a) the equal standard pollution loading of TN of each township in the watershed is as follows: Jiangkou > Sanjiangkou > Zhuangbian > Xinxian > Qiulu > Dayang > Baisha and the main pollution source is rural population,livestock and poultry breeding and cultivated fields.b) The equal standard pollution loading of TP is Sanjiangkou > Jiangkou > Xinxian > Wutang > Baisha > Zhuangbian > Qiulu and the main pollution source is livestock and poultry breeding and rural population.
出处
《中国水土保持》
2013年第8期50-53,77,共4页
Soil and Water Conservation in China
基金
莆田市科技局项目(2010S05)
福建省教育厅基金项目(JA2008204)
关键词
农业面源污染
等标排放量
等标污染负荷
等标污染负荷比
萩芦溪
agricultural non-point source pollution
equal standard pollution loading
equal standard pollution load ratio
Qiulu watershed
