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A method for measuring soil layer thickness based on magnetic susceptibility

A measurement method and magnetic susceptibility technology, which are applied in the field of basic soil survey, electromagnetic measurement device, and electric/magnetic thickness measurement, etc., can solve problems such as large measurement deviation, inability to carry out soil erosion measurement work effectively, and achieve low equipment cost. , the effect of a large measurement range

Inactive Publication Date: 2020-04-14
NORTHWEST A & F UNIV +2
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Problems solved by technology

[0005] This application provides a method for measuring soil layer thickness based on magnetic susceptibility, in order to solve the problems of ineffective soil erosion measurement and large measurement deviation in the prior art

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  • A method for measuring soil layer thickness based on magnetic susceptibility
  • A method for measuring soil layer thickness based on magnetic susceptibility
  • A method for measuring soil layer thickness based on magnetic susceptibility

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Embodiment Construction

[0026] Please refer to the attached figure 2 , which shows the flow steps of a method for measuring soil layer thickness based on magnetic susceptibility provided in an embodiment of the present application.

[0027] A method for measuring soil layer thickness based on magnetic susceptibility, also referred to as the magnetosphere detection method, is a soil layer thickness that combines the magnetic susceptibility measurement technology in geophysical research, the magnetic difference of common substances, and the law of soil erosion. rapid measurement methods, including:

[0028] Step S1: Determination of the original magnetic susceptibility K of the topsoil layer of the sample point soil b .

[0029] Before the formal measurement, the original magnetic susceptibility K b is determined, the original magnetic susceptibility K b It is also called background topsoil magnetic susceptibility (K-background, referred to as K b ).

[0030] Step S2: Determining the maximum mag...

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Abstract

The application provides a method for measuring soil layer thickness based on magnetic susceptibility, which relates to the technical field of soil erosion monitoring. Including: Determination of the original magnetic susceptibility K of the topsoil layer of the sample point b ; Determination of the maximum magnetic susceptibility K of the magnetic piece placed in the topsoil layer m ; Buried magnetic parts at a preset depth below the sample point soil to form a magnetosphere; measure the first magnetic susceptibility K of the topsoil layer directly above the magnetosphere 1 ; After a preset time interval, measure the second magnetic susceptibility K of the topsoil layer directly above the magnetosphere 2 ; According to the conversion equation of the magnetic susceptibility of the soil layer and the thickness of the soil layer, the change value of the soil layer thickness is calculated. The method for measuring the thickness of the soil layer based on the magnetic susceptibility provided by this application has little or no disturbance to the soil layer of the sample point, can quickly and accurately obtain the measurement results, does not require any special manual maintenance, and the soil layer of the sample point is representative , It has strong practicability in soil resource protection, soil erosion monitoring scientific research and field monitoring.

Description

technical field [0001] The present application relates to the technical field of soil erosion monitoring, in particular to a method for measuring soil layer thickness based on magnetic susceptibility. Background technique [0002] Soil erosion is a serious soil degradation process that restricts the sustainable use of agricultural soil resources worldwide. The basic principle of soil erosion measurement is to directly or indirectly monitor the dynamic changes of soil layer thickness caused by soil erosion at different temporal and spatial scales. The process of soil erosion is very complex, and this process is often not easy to monitor quantitatively. As a method of directly measuring the amount of soil erosion, the erosion needle method measures the increase or decrease in the thickness of the surface soil layer after the loss or accumulation of the surface soil by measuring the distance between the tip of the erosion needle and the soil surface. Specifically, inserting a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/06
CPCG01B7/10E02D1/00E02D17/20A01B47/00A01B76/00
Inventor 刘亮张科利刘宝元黄明斌符素华张加琼
Owner NORTHWEST A & F UNIV
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