北京林业大学学报2017，Vol.39Issue(11)：65-74,10.DOI:10.13332/j.1000--1522.20170163
植被过滤带水土保持和水质净化效益研究
Effects of soil and water conservation and water purification by vegetative filter strips
摘要
Abstract
Vegetative filter strip ( VFS) is one of the commonly used practices for soil and water conservation and non-point source pollution control. In August 2016, a simulated scouring experiment on soil boxes was conducted in Beijing to quantitatively evaluate the interception and removing effects of VFS ( all planted with Festuca arundinacea) on runoff, total suspended solid (TSS), and pollutants (TN, TP, K) . The differences between volumes of runoff and concentrations of TSS, TN, TP and K of the inflow and outflow of VFSs with different width, slope and inflow rate were examined to analyze the influence of width, slope and inflow rate on soil and water conservation and water purification effects of VFS. The results showed that the runoff reduction rate was greatly influenced by the width of VFS. The VFSs with 1 , 3 , and 5 m width could reduce runoff by 25. 9%, 79. 6% and 79. 7%, respectively; the reduction rate of pollutants ( TN, TP, K ) increased with the increasing width, which were 51. 7%--92. 9%, 44. 4%--98. 8%, and 31. 7%--97. 9% correspondingly; and the reduction rate of TSS was 97. 6%, 99. 4% and 77. 4%, respectively. Besides, the reduction rates of runoff and TSS decreased with increasing slope of VFS (3°, 7°, 10°). For the same VFS, decreasing inflow rate corresponded to increasing reduction rate of runoff and TSS, while the removal efficiencies of TN, TP and K were decreasing. The results indicate that VFS is an effective practice for reducing runoff, removing TSS and pollutants.关键词
植被过滤带/水土保持/水质净化/径流/总悬浮物Key words
vegetative filter strip/soil and water conservation/water purification/runoff/total suspended solid ( TSS)分类
农业科技引用本文复制引用
茅超颖,王云琦,马瑞,夏妍,王婕,向靓杰,张守红..植被过滤带水土保持和水质净化效益研究[J].北京林业大学学报,2017,39(11):65-74,10.基金项目
北京林业大学大学生创新创业训练项目(201610022014). （201610022014）
