gulley erosion的意思|示意

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Gulley erosion is a type of erosion caused by flowing water that forms narrow channels in the ground. It is caused by the water's strong erosion power and tends to occur in places where the ground is relatively soft. Gulley erosion can cause serious damage to the environment and the land it affects, and it can have serious economic and social consequences.

The most common form of gulley erosion occurs when water running down a slope collects in a channel. The water runs faster and applies more force on the ground it is running through, causing the channel to cut deeper into the ground. Over time, the channel deepens and widens, and the walls of the channel become progressively steeper, forming a gulley. The edges of the gulley form small side channels, which also contribute to further erosion.

Gulley erosion can be particularly problematic in agricultural areas. The channels that are eroded can form on the slopes and ridges of farmland and carry away valuable topsoil, leaving the land exposed and susceptible to further erosion. This type of erosion can also lead to increased runoff and increased sedimentation in nearby waterways.

Gulley erosion can be remedied in a variety of ways. One approach is to use contour plowing, which involves plowing the land at particular angles that discourage further erosion. In addition, vegetation can be planted on the sides of gullies to slow the flow of water and trap sediment. Culverts, jetties and check dams can also be built to reduce the flow of water and trap sediment. Finally, a combination of these techniques can be employed to prevent further gullying.