Contour bunding is a method of soil conservation used indesert 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
Explanation
Option (d) is correct
- Contour bunding is a method of soil conservation that is primarily used in hilly and sloping terrains, where runoff water can cause significant soil erosion. In this technique, small embankments are constructed along contour lines to slow down the flow of water, thereby reducing soil loss and improving moisture retention. It is not suitable for desert margins, where wind erosion is dominant; nor for low, flat plains prone to flooding, where drainage measures are more relevant; nor for scrublands dealing with weed spread. Since none of the given options correctly describe the areas where contour bunding is used, the correct answer is (d) None of the above.
