Question

3. “The denudation of the soil cover and subsequent washing down leads to serious problems” Comment. Suggest some methods according to you to overcome this problem.​

Answer 1

Answer:

The denudation of the soil cover and subsequent washing down leads to serious problems" Comment. Other cause: oil spillage, domestic sewage discharge in water bodies, the reservoirs which are built on the food plains have submerged the existing vegetation and soil leading to soil erosion.

Answer 2

Solution

 Ploughing along the contour lines can decelerate the flow of water down the slopes. This is called contour ploughing.

 Steps can be cut out on the slopes making terraces. Terrace cultivation restricts erosion. Western and central Himalayas have well developed terrace farming.

 Large fields can be divided into strips. Strips of grass are left to grow between the crops. This breaks up the force of the wind. This method is known as strip cropping.

 Planting lines of trees to create shelter also works in a similar way. 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.