Question

Soil erosion can be prevented by

Answer 1

Explanation:

Soil erosion is one of the major environmental issues these days because it leads to the loss of top fertile soil which is harmful for agriculture and environmental as a whole.

There are several methods to avoid soil erosion. For instance

• Cultivating in contours or slope may prevent soil erosion
• Planting trees may also reduce erosion
• Planting long trees along the sides of the field and banks of the river may also help to reduce soil erosion

Answer 2

Soil erosion

Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water and wind or through forces associated with farming activities such as tillage.

Various methods used to prevent soil erosion are :-  

1.) Intensive cropping Crops keeps the soil binded.

2) Sowing grasses and planting xerophytes Sowing grasses on barren soil              or planting of xerophytes will bind the loose soil.

3) Terrace farming (terracing) In terracing the slopes are divided into a number of flat fields to slow down the flow of water. Moreover, eroded soil from upper regions of hills gets deposited in lower terraces.

4) Contour bunding Small bunds are raised on the edges of fields to prevent loss of topsoil through either wind or water.

5) Wind breaks Rows of trees and shrubs are planted at right angles to the prevailing wind flow.

6) Proper drainage canals around the fields This method involves the removal of excess rain water through small drainage canals formed around the fields.