On the other hand, causes of land damage varied significantly between the regions. A process which tends to wear down the land surface it is usually applied to a river and involves the deepening of its valley by the river. Desertification . 2. 2.2. The remaining proportion was for unspecified causes at 7%. Land degradation: Causes, impacts and rehabilitation techniques 2.1 Causes of land degradation Scholars identified different causes of land degradation. Land degradation—the deterioration or loss of the productive capacity of the soils for present and future—is a global challenge that affects everyone through food insecurity, higher food prices, climate change, environmental hazards, and the loss of biodiversity and ecosystem services. Desertification has been defined as land degradation in arid, semi-arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities[11].

Desertification, a phenomenon referring to land degradation in arid, semi-arid and dry sub-humid regions as a result of climatic variations and human activities, is considered as one of the most severe environmental and socio-economic problems of recent times.

: Causes and Impacts of Land Degradation and Desertification: Case Study of the Sudan . Land degradation is, however, difficult to grasp in its totality. In detail, overgrazing represented the primary cause of land degradation at more than a third followed by deforestation and over-cultivation which accounted for approximately 30% of land degradation. Water logging. Leguminous plants can be cultivated in intervals which will increase the fertility of the soil. This includes the loss of topsoil, the loss of vegetation and increasing soil salinity. Land degradation is any change in the condition of the land which reduces its productive potential. At its worst, land degradation can result in the desertification or abandonment of land (or both). The extraction of such natural resources demand deforestation and changes in landscape, causing irreversible changes in the natural land resource base. The most authoritative estimates of the extent of land degradation are contained in a report on South Asia prepared by UNDP, UNEP and FAO (Land Degradation in South Asia: its severity, causes and effects upon the people, Rome, FAO, 1994).Water erosion is the most common form of degradation in the area, affecting 25 percent of agricultural land. If there is no proper drainage system in the land, the land … Soil degradation is a serious global environmental problem and may be exacerbated by climate change. Another definition of desertification is the Whilst soil degradation is recognised as a major aspect of land degradation, other processes which affect the productive capacity of cropland, rangeland and forests, such as lowering of the water table and deforestation, are captured by the concept of land degradation. Whenever forest fires are experienced, thousands of acres of trees and vegetation cover are wiped out. Land is a vital resource to humankind, like air and water. The degradation of agricultural and pastoral land in Australia is a matter of considerable concern. Forests fires may arise on the account of natural, accidental, and human causes. Forest fires such as the ones that commonly happen in dry tropical forests are a major cause of forest degradation.



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