Question

what do you mean by soil erosion ? explain the reason which are the responsible for soil erosion​

Answer 1

Answer:

“Soil erosion is the natural process in which the topsoil of a field is carried away by physical sources such as wind and water.”

                                Running water is the leading cause of soil erosion, because water is abundant and has a lot of power. Wind is also a leading cause of soil erosion because wind can pick up soil and blow it far away. Activities that remove vegetation, disturb the ground, or allow the ground to dry are activities that increase erosion.

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Answer 2

It is a process in which the top fertile layer of soil is lost. Due to soil erosion, the soil becomes less fertile. The top layer of soil is very light which is easily carried away by wind and water. The removal of topsoil by the natural forces is known as soil erosion.

Reasons for soil erosion:

1. Wind : When strong winds blow, the topsoil along with the organic matter is carried away by the wind. This is very common in desert and semi desert areas.
2. Water : When it rains in the hilly areas, the soil gets washed away towards the plains. The running water deposits the mineral-rich soil in the riverbed.
3. Overgrazing : When cattle are allowed to graze on the same field repeatedly, all the available grass, including the roots are eaten by them. This makes the topsoil vulnerable to wind and flowing water, leading to soil erosion.
4. Deforestation : Cutting down of trees on a large scale for these purposes is deforestation. The roots of trees hold the soil together, thus preventing the soil from getting uprooted.
5. Agrochemicals : The excessive use of chemical fertilizers by farmers causes imbalance in the ph, moisture and micro organisms in the soil. This increases the risk of soil erosion and contamination in the ecosystem.

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