The large canopies of trees help to prevent soil erosion by reducing the impact of rain onto the ground. The water drains down the leaves and branches and soaks into the soil rather than forcefully hitting the ground, which decreases the amount of soil that is washed away with the rain.

Does reforestation prevent erosion?

It reduces soil erosion and protects the fertile topsoil, thus preventing the silting of rivers and lakes. It stops the soil surface from sealing, and reduces the amount of precious rainwater that runs off.

Does planting trees prevent soil erosion?

Trees contribute immensely in preserving soil. ... The trees' roots suck water deep from under the ground to as low as 200 feet. They hold the soil together so that erosion is prevented.