What processes cause soil erosion?

Soil erosion refers to the destruction or displacement of the physical structure or chemical composition of soil under the action of external forces such as water, wind, freezing and thawing, gravity, temperature and man-made forces, including the processes of destruction, denudation, transportation and deposition. According to authoritative statistics, every 5 seconds there is a soccer field size of the soil will be eroded, and the formation of 2-3 cm thick soil may take up to 1000 years, soil resources are hard to come by. So what are the causes of soil erosion?

Natural and man-made factors

The influence of climate on soil erosion is sometimes wild, such as the main and most direct precipitation, especially torrential rainfall, directly causing a lot of soil erosion, is the cause of flash floods in hilly and mountainous areas, mudslides, landslides, an important reason; topography is also an important factor affecting soil erosion. Slope soil is most likely to be stared by hydraulic erosion, and the size of the slope, slope length, slope shape and so on have a certain impact.

Harms of soil erosion

1. Destruction of land: Soil erosion can lead to land destruction, farmland is swallowed up, after the erosion of the surface soil of sloping cultivated land, so that the land is increasingly barren.

2. Flood damage: Soil erosion can lead to the accumulation of debris in the lower reaches of the river, weakening the riverbed's ability to drain floodwaters and making it easier to exacerbate flooding.

3. Natural disasters: Soil erosion is more likely to lead to extreme events such as floods, mudslides and landslides, posing a serious threat to the environment, flora and fauna, as well as to the safety of human life and property.

What we should do

Aiming at the harm caused by soil erosion to the environment and human beings, we should vigorously promote the protection of landscape ecology and long work.

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