Improper land use can cause soil erosion by changing vegetation, soil properties, and runoff speed. Different types of land use affect erosion differently, with farmland being most vulnerable. Land management practices and land use patterns also play a role in soil erosion. At slope scale, vegetation helps prevent erosion by reducing runoff. At small watershed scale, changes in land use structure impact erosion. At regional scale, methods like up-scaling are used to evaluate soil erosion over large areas.