草灌乔结合的河岸缓冲带对面源污染物的净化效果研究  

Effects of Different Plant Collocation Method Cushion Belt on Farmland Runoff Purification

作　　者：苏天杨[1] 李林英 姚延梼[1] 

机构地区：[1]山西农业大学,山西太谷030801 [2]山西林业科学研究院,山西太原030012

出　　处：《天津农业科学》2010年第6期82-84,共3页Tianjin Agricultural Sciences

基　　金：国家林业局"948"项目(2006-4-15)

摘　　要：对披碱草、高羊茅、紫穗槐、柽柳4种植物不同配置方式缓冲带对径流水中总氮、总磷和固体颗粒悬浮物的净化效果进行了研究。结果表明,3块样地(A、B、C)在前12m对径流污染物的净化效果显著,对固体颗粒悬浮物的平均去除率达73.03%,对总氮的平均去除率达20.51%,对总磷的平均去除率为32.92%。12m之后3块样地径流水中污染物浓度均出现了不同程度的上升,16m后样地A与样地B的径流水污染物浓度继续小幅上升,样地C中径流污染物浓度开始下降。3块样地沿程截流污染物效果为:样地C>样地A>样地B。A series of pilot experiments of runoff pollution were conducted on riparian buffer strips covered with ElymusdahuricusTurcz, Festuca arundinacea, Amorpha fruticosa L, Tamarix chinensis. Results showed that the effect is remarkable in the first 12 meters to the runoff pollutant＇s purification all of the three type places. 73.03% of SS, 20.51% of TN and 32.92% of TP was trapped . The pollutant density in the diameter running water was rise after 12 meters in A, B, C. The pollutant density in the diameter running water was small scale rise in A and B, it started to drop in C after 16 meters. The effect of cut-off pollutant was that ：CAB .

关 键 词：滨河缓冲带 非点源污染 抗侵蚀性 

分 类 号：X505[环境科学与工程—环境工程]