Chapter 1 · Question 4
Explain land degradation and any major methods of land conservation.
Answer
Direct Answer
Land degradation is the decline in the quality and productivity of land due to factors such as deforestation, overgrazing, mining, over-irrigation, and industrial waste. It can be reduced through afforestation, controlled grazing, proper irrigation, shelter belts, stabilising sand dunes, and treating industrial effluents before discharge.
Simple Explanation
Land degradation is the loss of land quality from deforestation, overgrazing, mining, over-irrigation, and waste. Conservation includes afforestation, controlled grazing, shelter belts, and treating effluents.
Exam-Ready Structure
Land degradation refers to the decline in the quality and productivity of land caused by human activities and natural processes.
Causes of land degradation:
• Deforestation — removes tree cover, exposing soil to erosion.
• Overgrazing — excessive grazing by livestock strips vegetation and compacts soil.
• Mining — leaves deep scars, removes topsoil, and creates waste debris.
• Over-irrigation — leads to waterlogging and increases soil salinity in command areas.
• Industrial waste — untreated effluents and chemicals contaminate soil.
Major methods of land conservation:
• Afforestation — planting trees to restore vegetation cover and bind soil.
• Controlled grazing — managing the number of livestock and rotation of grazing lands.
• Proper irrigation — avoiding over-watering to prevent waterlogging and salinity.
• Shelter belts — planting rows of trees in dry areas to reduce wind erosion.
• Stabilising sand dunes — planting vegetation to stop desert expansion.
• Treatment of industrial effluents — treating waste before releasing it into the environment to prevent soil contamination.
Key Points
- Land degradation is the decline in the quality and productivity of land due to factors such as deforestation, overgrazing, mining, over-irrigation, and industrial waste.
- It can be reduced through afforestation, controlled grazing, proper irrigation, shelter belts, stabilising sand dunes, and treating industrial effluents before discharge.
Relevant Maps and Figures
Gully Erosion Figure
figure
Use this figure to anchor the meaning of gully erosion while explaining how running water degrades land.
After defining land degradation, connect the visual to control measures such as contour ploughing, terrace farming, and shelter belts.
This figure gives a direct visual of gully erosion, one of the textbook's clearest examples of severe land degradation caused by running water.
Answer Sources
- Land degradation and conservationtextbook section | Contemporary India-II | Resources and Development | Land degradation in India | Pages 8-10