黄土高原坡耕地水土保持措施效益评价试验研究 (Ⅱ)坡耕地水土保持措施蓄水拦泥效益数学模型研究

Experiment of the evaluation on the benefits of soil and water conservation measures for slope land Ⅱ.mathematical models of water and sediment retaining benefits by soil and water conservation measures on slope land

应用二次正交旋转回归试验法,对黄土高原坡耕地实施水土保持措施后在蓄水拦泥效益方面进行了人工降雨模拟试验研究。得出了坡耕地的坡度、降雨强度、降雨雨型、水土保持措施以及植被覆盖度5个主要因素影响下的拦蓄降水量和产沙量多维回归数学模型。通过对其分析,得出了各个因素对水土流失的影响程度及各水土保持措施在蓄水拦泥效益方面的作用大小。

Using the method of quadratic cross regression with rotation,the benefits of retaining water and soil of soil and water conservation measures are experimented on slope land of the loess plateau with simulated rainfall.Two sets of multi-regression models about both rainfall retained and sediment,which are affected by five major factors including slope,intensity and type of rainfall,soil and water conservation measures and cover rate of vegetation,were obtained.Through analysis the effects of each factor on soil and water conservation and of each soil and wa^er conservation measures on the benefits of retaining water and soil were gotten.