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Match the steps for controlling soil erosion with their description:
|
Column A |
Column B |
|
(a) Contour ploughing |
(i) Planting of trees and vegetation to hold soil in place |
|
(b) Terrace farming |
(ii) Ploughing along the contour of the land to prevent water runoff |
|
(c) Afforestation |
(iii) Farming on steps carved into hillsides to prevent soil erosion |
- (a) - (i) , (b) - (ii) , (c) -(iii)
- (a) - (ii) , (b) - (iii) , (c) -(i)
- (a) - (i) , (c) - (ii) , (b) -(iii)
- (c) - (i) , (a) - (ii) , (b) -(iii)
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Answer:
So, the correct answer is - (B) (a) - (ii) , (b) - (iii) , (c) -(i)
Explanation :
- Contour ploughing is a method of ploughing along the contour lines of a slope. This creates ridges that act as barriers for water runoff, reducing the speed and volume of water flow. This helps to prevent soil erosion and conserve soil moisture
- Terrace farming is a method of farming on steep slopes by creating flat platforms or steps along the hillside. This reduces the slope gradient and length, and increases the surface area for cultivation. This helps to prevent soil erosion by reducing water runoff and retaining soil fertility
- Afforestation is a method of planting trees and vegetation on barren or degraded lands. This helps to prevent soil erosion by stabilizing the soil structure, increasing the organic matter, and reducing the impact of raindrops. Trees and vegetation also provide shade, reduce wind speed, and enhance water infiltration
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