Soil erosion can be prevented by

Soil erosion can be prevented by good plant cover.
Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation.
The roots of the plants bind the soil together, and interweave with other roots, forming a more solid mass that is less susceptible to both water and wind erosion.
Vegetation acts as an interface between the atmosphere and the soil. It increases the permeability of the soil to rainwater, thus decreasing runoff. It shelters the soil from winds, which results in decreased wind erosion, as well as advantageous changes in microclimate.