The correct answer is It starts and expands due to over ploughing, deforestation and improper management of soil and water.
Key Points
- Desertification is a type of land degradation in dry lands that reduces biological productivity due to natural or anthropogenic factors causing them to become more arid.
- In western Rajasthan, desertification activities lead to the destruction of ecosystems and loss of biodiversity.
- The desert of Rajasthan is much less than other deserts located at similar latitudes of the world.
- It starts and spreads due to over-plowing, deforestation and improper management of soil and water.
Additional Information
- Desertification is severe in hot and dry northwest India which includes the Thar Desert.
- Desertification has affected about 70 percent of the state. Wind erosion, a major process of desertification in the state, has affected 44.41 percent of the area.
- Vegetation erosion and water erosion also affect desertification.
- Sand movement and dust storms due to wind erosion and deposition are characteristic of the Thar.
