Virtual Kollage: The prevention and control of soil erosion

Posted by / Saturday, 14 May 2016 / No comments

The prevention and control of soil erosion


SOIL EROSION
This refers to the wearing and washing away of the top soil by agents such as man, wind, water.

Factors influencing erosion
Climate
Topography
Vegetation cover
Activities of man

TYPES OF SOIL EROSION
Sheet erosion
This refers to the removal of a layer of topsoil over almost the entire land surface.

Splash erosion
This refers to the removal of the topsoil from a small area via a forceful fall of rain.

Rill erosion
This refers to the removal of the topsoil along narrow tracks or channels via raindrops falling on the soil.

Gully erosion
This refers to the removal of the topsoil by run-off water which has not sunk into the soil. When this occurs continuously, gullies are formed.

PREVENTION AND CONTROL OF SOIL EROSION
Avoiding bush
Avoiding overgrazing
Mulching
Terracing
Strip cropping
Erecting wind and water barriers
Addition of organic matter

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