what are the reasons for land degradation. describe briefly any four measures to conserve land from degradation.
Answers
Answer:
Strip farming: It is & practice in which cultivated crops are sown in alternative strips to prevent water movement.
- Crop Rotation
- Ridge and Furrow Formation
- Construction of Dams
- Contour Farming
Answer:
Explanation:
ine Main Causes of Land Degradation are as follows:
1. Deforestation:
Forests play an important role in maintaining fertility of soil . Forests are also helpful in binding up of soil particles with the help of roots of vegetation. Therefore, cutting о forests will affect the soil adversely.
2. Excessive Use of Fertilizers and Pesticides:
Fertilizers are indispensable for increasing food production Excessive use of fertilizers is causing an imbalance in the quantity of certain nutrients in the soil. This imbalance adversely affects the vegetation
1. Quality of Irrigation Water:
The ground water of arid regions are generally saline in nature. The irrigation water may be itself rich in soluble water and add to salinity of soils.
Water-logging:
Excessive irrigation and improper drainage facility in the fields cause rise in the ground water level. This ground water mixes with surface water used for irrigation and creates a situation called water-logging.
For Conservation
1. Gardening
Planting vegetation and grass can stop heavy rains from damaging our land and it protects the topsoil from being washed away.
2. Afforestation and Reforestation
Planting trees can prevent flooding which causes soil movement and erosion.
3. Conservation Tillage
Avoid stripping a whole field uncovered because it can cause harmful effect on the soil. Leaving a few vegetation or grass can keep the soil at bay.
4. Constructing Wind Breakers
Fences, bushes, hedges and trees can prevent gusty winds from damaging our soil.