Types of Soil degradation
The production of biomass for food, energy and raw materials and soil fertility is the most prominent functions of soil. Soil is a key factor in determining agricultural potential as 95% of the food we consume comes from soils. Soil provides a number of additional functions which are indispensable for the functioning of the ecosystem. Land degradation, therefore, poses a threat to food security, as well as disruption of the natural balance in the biosphere.
According to FAO, 33 percent of land today is moderately to highly degraded due to the erosion, salinization, compaction, acidification and chemical pollution of soils. In general, FAO distinguishes nine main types of land degradation:
Source: FAO http://www.fao.org