Preventing erosion isn't difficult. The best thing you can do is plant. Plant grass, flowers, trees, etc. When you plant things their roots dig down into the soil and hold it together it is very...
plant more trres, the trees roots will help less erosion by holding the soil
contour plowing
It stops erosion by creating relatively small levees perpendicular to the natural flow of "runoff" rainwater.
Terracing prevents erosion, leaching and surface run-off, by trapping and slowing the water and soil that are being washed away.