what are the causes and effects of erosion?
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Explanation: Erosion can occur naturally by wind, water, and gravity. ... Other effects of erosion include increased flooding, increased sedimentation in rivers and streams, loss of soil nutrients' and soil degradation, and, in extreme cases, desertification.
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Erosion cuts away at existing layers of the earth. Erosion creates sediments that are transported by wind and water. Deposition is a natural result of erosion the sediments being transported have to be deposited somewhere. Deposition is where the sediments created by erosion are deposited.
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The agents of soil erosion are the same as the agents of all types of erosion: water, wind, ice, or gravity. ... Wind is also a leading cause of soil erosion because wind can pick up soil and blow it far away.
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25.2. Soil degradation causes include agricultural, industrial, and commercial pollution; loss of arable land due to urban expansion, overgrazing, and unsustainable agricultural practices; and long-term climatic changes.
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Soil compaction, low organic matter, loss of soil structure, poor internal drainage, salinisation and soil acidity problems are other serious soil degradation conditions that can accelerate the soil erosion process. This Factsheet looks at the causes and effects of water, wind and tillage erosion on agricultural land.
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Rainfall, and the surface runoff which may result from rainfall, produces four main types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.
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Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water (Figure 1) and wind (Figure 2) or through forces associated with farming activities such as tillage.
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The sediment in wind causes erosion by abrasion. Sand dunes form when the wind deposits sand. Loess form when the wind deposits clay and silt. Wind erosion can be prevented by keeping the ground covered with plants.
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['water erosion (includes sheet, rill and gully erosion)', 'wind erosion.', 'salinity (includes dryland, irrigation and urban salinity)', 'loss of organic matter.', 'fertility decline.', 'soil acidity or alkalinity.', 'structure decline (includes soil compaction and surface sealing)', 'mass movement.']
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weathering is the wearing away of rocks. erosion is the movement of the broken pieces away from the site of weathering.
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Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity. Mechanical weathering physically breaks up rock. One example is called frost action or frost shattering.
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Weathering, erosion, and deposition are three steps of a singular process of turning rock (or soil conglomerates) into “new” soil. Weathering is the action of breaking down existing rocks into smaller pieces (soil). Erosion is the transport of these particles by wind, water, or gravity.
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['Sheet and rill erosion. Hill slopes are prone to sheet erosion and rill erosion. ... ', 'Scalding. Scalding can occur when wind and water erosion removes the top soil and exposes saline or sodic soils. ... ', 'Gully erosion. ... ', 'Tunnel erosion. ... ', 'Stream bank erosion. ... ', 'Erosion on floodplains.']
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Wind erosion is occurred when pieces of the earth are worn away by the strong winds. It occurs in dry bare areas when wind blows and moves the dirt around. ... Wind erosion can be prevented by soil tiling and by properly managing the crops. Water erosion is the process where the piece of earth is worn away by water.
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Erosion. The main difference between weathering and erosion lies in where the process takes place. Weathering degrades a rock without changing its location. Erosion, on the other hand, causes rocks -- or particles of rock -- to be carried away from their original locations and deposited elsewhere.
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Farming. Agriculture is probably the most significant activity that accelerates soil erosion because of the amount of land that is farmed and how much farming practices disturb the ground (Figure 1). Farmers remove native vegetation and then plow the land to plant new seeds.
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Erosion and weathering are the processes in which the rocks are broken down into fine particles. Erosion is the process in which rock particles are carried away by wind and water. Weathering, on the other hand, degrades the rocks without displacing them.