A quantative study on the effect of soil and water conservation measures on slope rill erosion mitigation with different scale in the Loess Plateau

The effect of soil and water conservation measures on the slope on rill erosion with different scale in the Loess Plateau in the Middle Yellow River is quantatively analyzed.The results show that the action of rill erosion reduction due to soil and water conservation measures is more than that of reducing soil with infiltration and interception.In the small scale,the effect of soil and water conservation measures on slope can reduce rill erosion up to about 55%.In bigger scale,the soil and water conservation can reduce the rill erosion higher than the erosion reduction on slope by 1.1 to 1.25 times.The erosion reduction is about 29% of the total reduction by soil and water conservation in the valley.So,to reduce rill erosion by soil and water conservation on slope should be considered in calculating the reduced erosion by soil and water sonservation measures in Loess Plateau around the Middle Yellow River.