Q. Contour bunding is a method of soil conservation used in
- Desert margins, liable to strong wind action
- Low flat plains, close to stream courses, liable to flooding
- Scrublands, liable to spread of weed growth
- None of the above
Answer: (d) None of the above
Contour Bunding
- Contour bunding is a land management practice for marginal, sloping, and hilly land where the soil productivity is very low.
- It involves the placement of lines of stones along the natural rises of a landscape. This technique helps to capture and hold rainfall before it can become runoff.
- It also inhibits wind erosion by keeping the soil heavy and moist.
- This method of soil and water conservation is employed in hilly areas.
- Earthen embankments are built across the slope of the land, following the contour as close as possible.
Some common methods of preventing soil erosion are:
- Shelterbelts – in this, trees and shrubs are planted in the areas liable to strong wind action, to shield the fields against winds.
- Terracing – this is also practiced in the sloppy areas.
- Perimeter runoff control – it helps in preventing soil erosion by impeding surface flows.
- Mixed cropping and crop rotation also help in soil conservation by preventing the nutrients from getting eroded.