Did tillage erosion play a role in millennial scale landscape development

摘要: Landscape evolution models (LEMs) quantitatively simulate processes of sedimentation and erosion on millennial timescales. An important aspect human impact is sediment redistribution due to agriculture, referred herein as tillage erosion. In this study we aim analyse the potential contribution landscape development using LEM LAPSUS. The model calibrated separately for a water process (i) without (ii) with tillage. applied ~250?km2 Torrealvilla case catchment, SE Spain. We were able alternating sequences incision aggradation, that are longer (millennial) Generally, results show adds deposition in lower floodplain area, but neither alone nor together could exactly reproduce observed amounts area. addition, scale effects apparent. On hillslopes, may contribute importantly fill local depressions. If assessed catchment scale, sediments from eventually reach area where they deposition. However, was simulations be most scale. This first time has been explicitly included at timescale large