Abstract. Assessing the impacts of environmental change on soil erosion and sediment
yield at the large catchment scale remains one of the main challenges in soil
erosion modelling studies. Here, we present a process-based soil erosion
model, based on the integration of the Morgan–Morgan–Finney erosion model in
a daily based hydrological model. The model overcomes many of the limitations
of previous large-scale soil erosion models, as it includes a more complete
representation of crucial processes like surface runoff generation, dynamic
vegetation development, and sediment deposition, and runs at the catchment
scale with a daily time step. This makes the model especially suited for the
evaluation of the impacts of environmental change on soil erosion and
sediment yield at regional scales and over decadal periods. The model was
successfully applied in a large catchment in southeastern Spain. We
demonstrate the model's capacity to perform impact assessments of
environmental change scenarios, specifically simulating the scenario impacts
of intra- and inter-annual variations in climate, land management, and
vegetation development on soil erosion and sediment yield.
Soil Erosion Estimation Using Remote Sensing Techniques in Wadi Yalamlam Basin, Saudi Arabia