Question

explain four reasons for land degradation

Answer 1

1.Deforestation:
Forests play an important role in maintaining fertility of soil by shedding their leaves which contain many nutrients. 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 but their excessive use has occasioned much concern as a possible environmental threat. Excessive use of fertilizers is causing an imbalance in the quantity of certain nutrients in the soil. This imbalance adversely affects the vegetation.
3.Overgrazing:Increase in livestock population results in overexploitation of pastures. Due to this, grass and other types of vegetation are unable to survive and grow in the area, and lack of vegetation cover leads tosoil erosion. Millions of people in Africa and Asia raiseanimals on pastures and rangelands that have low carrying capacity because of poor quality or unreliable rainfall Pastoralists and their rangelands are threatened by overgrazing.
Pastoral associations in West Africa have tried with mixed success to improve the productivity of common held livestock pastures. The Aga Khan Rural Support Programme has been successful in improving management of common grazing lands.
4.Salination:
Increase in the concentration of soluble salts in the soil is called salination. India has about six million hectares of saline land.

Answer 2

deforstion of insurable land deforstion is both a type of degreadation as such condition a cause of other type principally water erison will done