水土流失系统容量的研究

Study on Systematical Capacity of Soil and Water Loss

利用集水区法和径流小区法，在黄龙山南缘宜川县森林区研究了人工油松林不同处理的系统容量和人工油松林集水区、荒坡灌草集水区的系统容量．结果表明，人工油松林不同处理的系统容量有显著差异，容量的大小顺序是：采伐林木保护好草灌层和枯枝落叶层、自然油松林、去掉枯枝落叶层、农地．不同集水区系统容量也有差异，尤以Ｎｏ．１集水区系统容量最大．分析得出，系统容量与降水量呈线性函数关系且相关性显著（α＝０．００５）．

The systematical capacity of different treatments of artificial Chinese pine forest system,and of the catchment of artificial pine forest as well as bare land with brush grass has been studied using the methods of catchment and runoff plots in southern Yellow dragon Mountain forest region,Shanxi Province.The results show that the systematical capacity of different treatments in artificial pine forest has obvious difference,the orders from big to small are:cutting forest and conserving grass and brush as well as litter; nature pine forest;removing litter;farmland.There also exist some differences in different catchments.Systematical capacity and precipitation are of linear relationship and their correlation is significant.