Water erosion and wind erosion have the greatest influence on soil erosion. Water erosion will destroy the ecological balance, and wind erosion will aggravate soil desertification.
Globally, 50 N? The 1940s was the main distribution area of water erosion. The water erosion area in China is mainly distributed in 20? Between 50 n. Wind erosion mainly occurs in grassland and desert areas. The United States, China, Russian Federation, Australia, India and other countries are the main distribution countries of soil erosion, and some countries in South America and Africa also have large areas.
Soil erosion in China is mainly distributed in the loess plateau in northwest China, hilly areas in south China, hilly areas in north China, hilly areas in northeast China, hilly areas in Sichuan basin and surrounding areas. Wind erosion areas in China are mainly distributed in arid, early and semi-arid areas in northeast, northwest and north China, as well as coastal sandy land.
Extended data
The hazards of water erosion and wind erosion are:
1, soil erosion will lead to soil thinning, soil degradation, destruction of ecological balance, sediment pollution, silting up rivers, lakes and reservoirs, endangering farmland, doing great harm to agriculture, forestry, animal husbandry, water conservancy, electricity and transportation, and directly affecting national economic construction and the improvement of people's living standards.
2. The sand particles carried by the wind constantly rub against rocks to form wind erosion, and the dust, soil and sand particles generated enter the atmosphere, causing environmental pollution.
3. In unprotected, dry and loose soil, when the wind speed is extremely high, the general soil wind erosion will develop into sandstorm or dust haze, and the wind will blow away the fertile topsoil of farmland and pasture, expose and bury seeds and seedlings, and bury railways, highways and villages. Dust enters the atmosphere, causing environmental pollution and endangering human health. ?
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