Study on the soil redistribution induced by tillage erosion in loess region of China

Soil redistribution induced by tillage erosion in loess region was investigated Small cubes were used as tracers of soil displacement The results showed that the variations of horizontal and vertical soil displacements with slope gradient and depth can be described with binary linear regression equation; the variations of soil depth after tillage with its depth before tillage and slope gradient can be described with binary quadratic paraboloid regression equation and after per tillage operation, depth of soil with about one thirds of tillage depth basically did not change, depth of soil with shallower than one thirds of tillage depth became deeper than before, and depth of soil with deeper than one thirds of tillage depth became shallower than before