鲁中南山区坡面草业用地水土流失预测经验模型研究

Anticipated Empirical Model on Soil and Water Erosion for Grass Land in Mountain Areas of Middle Southern Part of Shandong Province

以临朐、蒙阴、曲阜三个水土保持试验站不同草本植物、不同坡度、不同盖度条件下径流小区内的不同降雨量、不同降雨强度所产生的径流量和侵蚀量观测资料进行分析。结果表明:在相同坡度不同草本植物、不同坡度相同盖度、不同盖度相同坡度条件下,草本植物径流小区内的降雨量与径流量、降雨量与侵蚀量均呈线性回归关系,降雨强度与径流量、降雨强度与侵蚀量均呈对数关系,径流量和侵蚀量均随降雨量和降雨强度的增大而增大;得出在综合因子影响下的鲁中南山区坡面草业用地径流量预测经验模型和侵蚀量预测经验模型。

The paper studies observational data on runoff and soil erosion in runoff-plots of different grass,different slope gradient,different cover degree in Linqu,Mengyin,Qufu three soil and water conservation experimental stations.The results show that there are good linear relation between rainfall and runoff and between rainfall and soil erosion on the same slope gradient,the different crops and the same cover degree,different slope gradient and the same slope gradient,the different cover degree in grass runoff-plots.There are good logarithmic relation between rainfall intensity and runoff and between rainfall intensity and soil erosion.With the increase of rainfall and rainfall intensity,runoff and soil erosion are increasing.Anticipated empirical model on water and soil erosion for grass land in mountain areas of middle southern of Shandong province for runoff and soil erosion are educed.