| Popis: |
The vegetative filter strips can effectively intercept erosion of water and sediment on the slope, with huge potential to prevent and control soil erosion and agricultural non-point source pollution. A series of muddy water scouring experiments under different inflow conditions in the indoor soil trays were conducted to investigate the effects of vegetative filter strip (VFS) on intercepting nitrogen (N) and phosphorus (P) under different inflow conditions and its internal hydrological responses. The results showed that the VFS could effectively intercept N and P in the runoff. When the inflow was 200, 400, 600 L·h植被过滤带能有效拦截坡面径流泥沙,在防治水土流失和农业面源污染等方面具有重大潜力.为探讨不同入流条件下植被过滤带对坡面径流氮、磷的拦截效果及其水动力学机理,本研究通过模拟上方来水冲刷试验,定量分析了上方来水流量、氮磷含量浓度等因素影响下植被过滤带对径流氮、磷的拦截规律及其与径流水动力学参数之间的关系.结果表明: 植被过滤带能有效拦截上方来水中氮、磷等污染物,入流流量分别为200、400、600 L·h |
