How do plant roots help prevent soil erosion?

Vegetation prevents erosion in several different ways. First, the roots of plants hold the soil in place and keep it from washing away in rainstorms. Second, vegetation provides ground cover which keeps hard rain from washing away soil. Third, trees provide windbreaks which keep high winds from blowing away top soil. Thus, it is important to have farmers use no-till farming techniques. It is also important to replant the trees planted by the Civilian Conservation Corps in the 1930s which provided the windbreaks that helped stop the dust bowls in the United States.