soil degradation conclusions in 250 to 500 words . plz give correct answer, copy from net use book anything it's urgent
Answers
Explanation:
Soil degradation is a global process, but affects arid and semi-arid zones in sub-Saharan Africa most. Soil degradation is increasing worldwide, especially in the countries within the tropics. Depletion of nutrients and soil organic matter and erosion are the principal forms of soil degradation (see also nutrient requirements).
Among the land used for agriculture and forestry, soil is an important component. The intensive and increasing pressure on land leads to its degradation and pollution, which may result in a partial or complete loss of its productive capacity. Soil degradation can be defined as a process by which one or more of the potential ecological functions of the soil are harmed or destroyed. Soil degradation is a process that lowers the current and/or future capacity of the soil to produce goods and services.
Soil degradation can be either a result of natural hazards or due to unsuitable land use and inappropriate land management practices. Mismanagement of arable areas by farmers, cultivation practices that are not adapted to local environments and overgrazing by livestock are seen as the major causes of soil degradation.
Natural hazards which can lead to soil degradation include land topography and climatic factors such as steep slopes, frequent floods and tornadoes, blowing of high velocity wind, rains of high intensity and drought conditions in dry regions. The most prominent degradation feature worldwide is erosion by water.
Cultivating and managing soils in a more sustainable way would reduce environmental pressures all over the world: When crops are harvested, organic material and nutrients are removed from the fields (see also the nutrient cycle). While artificial fertilisers replace - to some extent - the loss of nutrients, they do not replace the loss of organic material. Over time, this seriously reduces soil quality, leading to soils with a lower water holding capacity, less air, and soils that are more susceptible to erosion and hence also degradation.
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