What is soil erosion? State how it can be prevented in deserts

What is soil erosion? State how it can be prevented in deserts.

Answer:
Soil erosion is denudation of the soil cover and subsequent washing down.
Planting lines of trees to create shelter prevents soil erosion. Rows of such trees are called shelter belts. These shelter belts have contributed significantly to the stabilisation of sand dunes and in stabilising the desert in western India.