The coupling of hillslope- and gully-erosion increases their controlling efforts: A case study in Liaoning Province, China

The widespread hillslope- and gully-erosion in Liaoning Province of Northeast China, pose serious challenges to the local agricultural production. Hillslope- have typically been studied separately; however, there has little investigation on relationship these two types erosion. In this study, coupling from perspectives erosion intensity land use, as well slope gradient, aspect, shape, was analysed. study employed remote sensing geographic information system techniques, universal soil loss equation kriging were used perform a macroscopic analysis. results showed that more severe compared with hillslope-erosion area. cultivated highest level human activities, therefore, most intense gully-erosion. threshold gradients for are 14° 6°, respectively. Above gradient is no longer primary factor affecting Sunny slopes observably than shady slopes, observed south-southeast-facing slopes. effect aspect should not be ignored, evidenced by considerable gully density east-northeast-facing which obviously higher other aspects. amount occur concave followed convex straight hillslope-erosion, but marked impact work may serve scientific reference comprehensive control across slope-gully China.