Water-soil conservation rate calculation method

A calculation method and technology of water and soil conservation measures, applied in the field of calculation of water and soil conservation rate, can solve problems such as water and soil loss, and achieve the effect of convenient parameters, scientific management level, and clear concept

Active Publication Date: 2020-12-01
XIAN UNIV OF TECH
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Problems solved by technology

Practical applications have found that the degree of water and soil erosion control in many watersheds has reached or exceeded 100%, but there is still water and soil loss that still needs to be treated, so the ratio of the area under control to the area of ​​water and soil loss cannot fully reflect the level of water and soil erosion control in the watershed

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  • Water-soil conservation rate calculation method

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Embodiment

[0072] The hilly and gully area of ​​the Loess Plateau has serious soil and water loss. At the same time, various slope and channel measures are well laid out. The present invention selects a typical small watershed in this area as an example to calculate the water and soil conservation rate of the small watershed.

[0073] First, the modified general soil loss equation is used to calculate the background soil erosion modulus. During the calculation, the crop cover-management factor (C) and the soil and water conservation measure factor (P) are both assigned as 1. The calculation results are as follows: figure 1 The average background soil erosion modulus of this small watershed is 41758t / (km 2 .a), the area of ​​the small watershed is 5.75km 2 , then the background soil loss (T k ) is 240,100 t.

[0074] Use the modified general soil loss equation to calculate the slope soil erosion modulus. When calculating, the crop cover-management factor (C) is assigned different values...

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Abstract

The invention discloses a water and soil conservation rate calculation method which specifically comprises the following steps: step 1, calculating a background soil loss amount Tk according to rainfall, terrain and soil types; step 2, calculating slope soil loss Ts according to rainfall, terrain, soil type, vegetation coverage and slope water and soil conservation measure influence; 3, calculating the slope water and soil conservation amount Bs based on the calculation results of the steps 1 and 2; step 4, calculating a channel measure sediment reduction amount Bc; and step 5, calculating thewater and soil conservation rate W according to the calculation results of the steps 1, 3 and 4. According to the water and soil conservation rate calculated by the method, the treatment level of water and soil loss can be evaluated more scientifically.

Description

technical field [0001] The invention belongs to the technical field of ecological environment protection, and relates to a calculation method of soil and water conservation rate. Background technique [0002] Soil and water conservation rate is proposed to scientifically quantify the level of water and soil loss control in the watershed (region). At present, there are two main indicators for evaluating the level of water and soil loss control, one is the degree of water and soil loss control (the percentage of the area of ​​water and soil loss control measures in a certain area to the original area of ​​water and soil loss), and the other is the soil loss control ratio (allowable The ratio of soil loss intensity to the average soil loss intensity after treatment). In practical application, it is found that the degree of water and soil loss control in many river basins has reached or exceeded 100%, but there is still water and soil loss, which still needs to be treated. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/06393G06Q50/26Y02A40/22
Inventor 高海东王飞超贾莲莲李占斌李斌斌
Owner XIAN UNIV OF TECH
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