应用颗粒分析法还原土壤流失量的方法

对于不适宜布设径流池的坡度较大的山区和丘陵地区,当降雨强度大或融雪水量较大,土壤流失监测点径流筒里的水集满而不能及时进行分流处理时,部分粒径较小的颗粒物质便随水流出径流筒,最终使得所测样方土壤流失量比实际流失量要小。采用颗粒分析法还原土壤流失量,能较合理地确定监测点土壤流失的实际情况。

Method of Soil Loss Reduction by Using the Method of Particle Analysis

For mountainous region and hilly area with greater gradients where are not suitable to layout runoff pool,part of particulate matter with smaller grain size will flow out of the tube with water,finally causing the measured amount of soil loss is smaller than that of the actual when rainfall intensity or snowmelt is greater and the collected water in the tube of monitoring site is full but cannot be diverted timely.Using the method of particle analysis to reduce the amount of soil loss can rationally define the actual condition of soil loss of the monitored site.