Effects of Slope Length on Runoff and Soil Erosion in Rocky Mountain Runoff Plots

The relationship between slope length and runoff with soil erosion is analyzed using years of observation data in Linqu county,Shandong province Daxinzhuang station runoff plots.The results show that rainfall and runoff with erosion is linear under different slope length,however,the runoff and soil erosion increase with the rainfall increasing on the same slope length,the runoff increases with the slope length increasing.Soil erosion of 20 m-long plot is less than 40 m-long plot's as P10 mm,but on the contrary as P10 mm.There is significant linear relationship between every rainfall and runoff or soil erosion.There is significant power function between the biggest of I30 rainfall intensity and runoff or soil erosion.the runoff and soil erosion increase with I30 increasing on the same slope length,soil erosion increases with the slope length increasing,and 20 m-long plot of runoff is more than 40 m-long plot's as I3020 mm,it has contray chang as I3020 mm.