摘要
茜坑水库是深圳市重要的饮水源水库,非点源污染防治任务严重.该文研究根据地貌特征和土地利用情况,利用通用土壤侵蚀方程计算不同土地利用类型区域的土壤侵蚀量,选择若干不同类型的非点源污染产生区域,进行降雨带来的径流水质的同步监测,分析污染量的特点.结果表明:林地和农业用地单位面积土壤流失量比较严重;农业用地和居住地是氮、磷等污染物的重点区域.
Nitrogen and phosphorus, coming mainly from non-point sources （NPS）, are major nutrients to cause eutrophication to degrade water quality of Xikeng reservoir, one of the important drinking water sources in Shenzhen. Based on the land use and geographical condition, the research area is classified into different types of non-point source areas as follows： agricultural land, forestland, bared land and village. Soil erosion mount of each plot are calculated by using USLE equation and pollutants of runoff （TSS, TN, TP, NH ＋ 4 - N, BOD, COD） are analyzed by field tests. The results show ： the loss amount of soil from forest land and agricultural land are relatively high; TP, TN concentrations of diffuse samples from villages and farms units are higher. These areas should be treated as critical areas of non - point source pollution.
出处
《江西师范大学学报（自然科学版）》
CAS
北大核心
2008年第5期627-630,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家科技支撑项目(2007BAB23C02)
美国环保署和深圳水务局联合资助项目
关键词
茜坑水库
小流域
非点源污染
土地利用
Xikeng reservoir
small watershed
non-point source pollution load
land use
