Soil wind erosion model comprising human factors and natural factors

Abstract

The invention discloses a soil wind erosion model comprising human factors and natural factors. A building method includes the steps that the mathematic relation between the wind erosion rate and the wind speed as well as between the wind erosion rate and the earth surface destruction rate is created according to wind tunnel experiment results; the wind erosion inhibiting effect of vegetation and the amplification effect generated after the earth surface is destructed are separated linearly, the wind erosion ratio represents the effect of fraction of coverage, and a traditional mathematical expression between the wind erosion ratio and the fraction of coverage is improved; the relation equation between the instant vegetation coverage and the soil wind erosion ratio is obtained; the soil wind erosion equation is corrected by taking wind erosion components in soil into consideration; the effect on soil wind erosion from human influence factors is quantized; integral is performed on the wind erosion equation, and the wind erosion equation is simplified according to the wind speed probability distribution characteristics to obtain an annual wind erosion amount calculation formula. The soil wind erosion model improves the productivity of land and ecological environment, and the soil wind erosion calculating method comprising human factors and natural factors is obtained.

Description

technical field [0001] The invention belongs to the technical field of soil wind erosion research. For the first time, the human influence factors are quantified in the soil wind erosion model, and especially relate to a calculation method of the influence degree of human factors on soil wind erosion, which combines the inhibition effect of vegetation on wind erosion and the amplification of surface damage. A more scientific and reasonable soil wind erosion calculation method including human factors and natural factors was constructed. Background technique [0002] Soil wind erosion is one of the major environmental problems in many countries and regions in the world. Areas in the world that are prone to soil wind erosion include: North Africa, the Near East, Central Asia, parts of Southeast Asia, the Siberian Plain, Australia, southern South America, and the arid and semi-arid regions of North America. The area affected by soil wind erosion and land desertification account...

AI Technical Summary

Problems solved by technology

[0021] The purpose of the embodiments of the present invention is to provide a soil wind erosion model that includes human factors and natural factors, aiming to solve the problem that the current domestic soil wind erosion models do not quantitatively consider human factors

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