CBSE · Class 10 · Social Science · Geography: Resources and DevelopmentWhat is land degradation? Explain the main human and natural causes of land degradation in India, and suggest five effective measures to solve the problem of land degradation.

Meaning of Land Degradation\nLand degradation refers to the decline in the quality and fertility of soil or land resources over time, rendering it unsuitable for agricultural and other productive purposes. It is caused by both natural factors and unsustainable human activities.

Causes of Land Degradation in India

• Deforestation: Large-scale clearing of forests for agriculture, urbanization, and industrialization removes the protective vegetation cover, leaving the topsoil vulnerable to wind and water erosion.
• Overgrazing: Continuous grazing by livestock in states like Gujarat, Rajasthan, Madhya Pradesh, and Maharashtra leads to the removal of grass cover, resulting in severe soil erosion.
• Mining and Quarrying: Mining activities leave deep scars and traces of overburden on the land. In states like Jharkhand, Chhattisgarh, Madhya Pradesh, and Odisha, deforestation due to mining has caused severe land degradation.
• Over-irrigation: In states like Punjab, Haryana, and western Uttar Pradesh, excessive irrigation is responsible for land degradation due to waterlogging, which leads to an increase in salinity and alkalinity in the soil.
• Industrial Effluents: Industrial waste and effluents discharged onto land and water without treatment act as a major source of land and water pollution, degrading the soil quality.

Measures to Solve Land Degradation

1. Afforestation and Proper Management of Grazing: Planting trees extensively and managing pasture lands properly can significantly prevent topsoil erosion.
2. Shelterbelts for Plants: Planting rows of trees (shelterbelts) along field margins helps check wind movement and reduces soil erosion in dry and arid zones.
3. Stabilization of Sand Dunes: Growing thorny bushes in desert regions, such as in Rajasthan, helps stabilize sand dunes and prevents the desert from expanding.
4. Proper Treatment of Industrial Effluents: Industrial waste and wastewater must be treated properly before discharging them into environment or land to avoid chemical contamination.
5. Control on Mining Activities: Regulating mining activities and ensuring proper land reclamation after mining operations can restore degraded land areas.