SOIL EROSION

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Compiled by:-:

Compiled by:- UTSAVA BINDAL X-A 42

Soil erosion:

Soil erosion Soil erosion is when the soil is blown away by the wind or  washed away by the rain.

causes of soil erosion :

causes of soil erosion

Landforms::

Landforms:   Slope gradient, slope length and shape of slope are the important variables of landform that affect erosion processes for all types of soil erosion. e.g., splash, sheet, rill, and gully erosion.

Deforestation :

Deforestation In an undisturbed forest, the mineral soil is protected by a layer of  leaf litter   and an  humus  that cover the forest floor. These two layers form a protective mat over the soil that absorbs the impact of rain drops. They are  porous and highly  permeable  to rainfall, and allow rainwater to slow percolate  into the soil below, instead of flowing over the surface as  runoff.

Roads and urbanization :

Roads and urbanization Urbanization  has major effects on erosion processes—first by denuding the land of vegetative cover, altering drainage patterns, and compacting the soil during construction; and next by covering the land in an impermeable layer of asphalt or concrete that increases the amount of surface runoff and increases surface wind speeds.

Measures to conserve soil erosion:

Measures to conserve soil erosion

PowerPoint Presentation:

The most effective known method for erosion prevention is to increase vegetative cover on the land, which helps prevent both wind and water erosion. Terracing is an extremely effective means of erosion control, which has been practiced for thousands of years by people all over the world. Windbreaks are rows of trees and shrubs that are planted along the edges of agricultural fields, to shield the fields against winds. In addition to significantly reducing wind erosion, windbreaks provide many other benefits such as improved microclimates for crops (which are sheltered from the dehydrating and otherwise damaging effects of wind), habitat for beneficial bird species, carbon sequestration and aesthetic improvements to the agricultural landscape. Traditional planting methods, such as mixed-cropping and crop rotation have also been shown to significantly reduce erosion rates.

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