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Method for quickly measuring soil rainfall erodibility

A rapid measurement and soil technology, applied in the direction of soil material testing, material inspection products, etc., can solve the problems of not really reflecting the comprehensive effect, not satisfying the erodibility of rainfall, not fully reflecting the sensitivity of soil to rainfall erosion, etc., to achieve The effect of low equipment cost, rapid determination, and simple overall steps and methods

Inactive Publication Date: 2012-02-15
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

However, most of the existing measurement methods are carried out indoors. The test process only considers the splash erosion of raindrops, which cannot truly reflect the comprehensive effect of rainfall impact and runoff transport in the process of rainfall erosion, and does not fully reflect the sensitivity of soil to rainfall erosion. These experimental methods also cannot meet the needs of rapid determination of rainfall erodibility in the field

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  • Method for quickly measuring soil rainfall erodibility
  • Method for quickly measuring soil rainfall erodibility
  • Method for quickly measuring soil rainfall erodibility

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Embodiment Construction

[0024] The present invention will be further elaborated below in conjunction with the accompanying drawings, in order to help the understanding of the present invention. The micro cells adopted in the present invention are easy to process and manufacture, and other simple devices can be purchased in the market or obtained through simple processing.

[0025] Experimental location: Dongchuan District, Yunnan, soil for testing: red soil.

[0026] as attached figure 1 Shown, a kind of soil rainfall erodibility quick determination method, comprises the following steps:

[0027] Step 1. Surface treatment

[0028] Delineate the experimental area 1, the range is at least: 1.5m×1.5m, the slope is 10°, and the experimental area is sloping farmland, and the 10cm deep surface soil shall be plowed according to conventional agricultural farming measures; the surface treatment within 1m around the experimental area is the same as that in the plot. Excavate drainage ditches under the exper...

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Abstract

The invention provides a method for measuring field rainfall erodibility. The method comprises the following steps of: selecting an experiment area; setting a micro area; simulating a rain-dropping machine to perform wet rainfall and erosion ratio measurement; calculating the erosion ratio; and then calculating the soil rainfall erodibility. In the invention, by setting the micro area and combining the earth surface treatment, manually simulated rainfall and the like, the runoff in the micro area can be quickly and effectively collected, and the erosion ratio and rainfall erodibility can be calculated; the method can be widely applied to the rapid measurement of different outdoor soil rainfall erodibilities; and moreover, the whole steps and method are simple, the equipment cost is relatively low, and the measurement is quick.

Description

technical field [0001] The invention belongs to the technical field of water and soil conservation, and in particular relates to a method for quickly measuring the rainfall erodibility of different soil types in the field. Background technique [0002] Soil erosion is a worldwide ecological environment problem. Soil erosion not only reduces soil fertility and soil productivity, but also brings sediment and non-point source pollution into lakes, reservoirs and rivers, causing a series of ecological and environmental problems such as reservoir siltation, river bed elevation, flooding and water environment deterioration. [0003] Rainfall erosion is an important cause of slope erosion. The rainfall erodibility of soil indicates the sensitivity of soil to rainfall erosion force (rainfall impact) during the water erosion process, and is a key parameter for quantitative calculation of slope erosion. However, most of the existing measurement methods are carried out indoors. The t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 徐佩傅斌王玉宽严坤
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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