Monday, May 13, 2019
Prepare a research paper on one form of soil degradation, its impact,
Prepare a on one form of soil degradation, its impact, methods that are being used to reduce or reverse its impac - research Paper ExampleThe paper also presents various methods that are being used to reduce or reverse its impact. The relevance of soil eroding to the sustainable use of soil has been discussed. footing Erosion Soil erosion is a phenomenon that has been taking place for many years. Loose soil on the earth prove is ranged by water and wind especially where the ground is bare. As the soil is formed, it is moved international to a different place if it is not covered or held tight by vegetation (Toy et al 2002). Intense human activity has caused soil in the recent past to be moved at a high-pitcheder rate than its formation. Some activities such as overgrazing and inappropriate farming practices have increase the vulnerability of soil to erosion. Soil that is left bare is carried away by soused wind or rainfall and deposited in rivers and water masses (Cox and Ash ley 2000). Rain mash is among the causes of soil erosion whereby very strong rain drops fall on bare soil detaching and moving it for a short distance. The effects of splash erosion are usually in-situ since the soil is only moved over a nominal distance. Moreover, the rain must fall with significant intensity for erosion to apply place. The soil is re-distributed on the out unless if the area is sloping. Rill erosion may occur when the soil is moved along channels raft slope. When the intensity of rainfall is high, the channels may enlarge to form gullies. Gulley erosion is much pronounced in many parts of the world and is associated with mass movement of soil (Bathgate and Pannell 2002). Generally, when the rain falls on soil, a substantial amount of water is absorbed until the soil is saturated. It takes time for the water to infiltrate and therefore the more time the water remains on the soil surface the greater the possibility of absorption. Soil erosion is mainly attribu ted to overland flow, which is the water that does not infiltrate in to the soil. This occurs mostly when the rainfall is sudden and with high intensity giving little time for absorption. Excess runoff is moved down slope by gravity and as rills converge at the bottom of the slope, larger gullies are formed and the overall leave alone is high intensity of erosion and huge soil deposits down slope (Boardman 2006). Wind is also a significant cause of soil erosion especially in semi-arid areas. It redistributes soil and may also move it over a long distance. Soil with detached individual particles through human and animal activities is fictile to wind erosion. Soil may as well move down slope through plowland (Troeh, 2003). This is usually attributed to wrong methods of plowing, such as contour farming down slope. Apart from moving the soil, cultivation creates weakness in soil layers making them susceptible to other forms of erosion. Soil erosion may take place in a gradual and un noticeable manner eventually causing significant impacts on the soil. In most cases, people tend to control soil erosion once it has occurred rather than set preventive measures in place to avoid its occurrence (Abel 2001). Impacts of Soil Erosion Soil erosion is a major environmental problem in the current day since it does not only affect the productiveness of land in-situ but also affects the environment ex-situ where the soil is deposited. It has been a significant contributor of jiffy floods in areas down stream as soil layers accumulate in river channels thereby nip and tuck the riverbeds. The result has been mass displacement of populations and damage of crops (Vaclav 2000). On the other hand, soil erosion
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