Method of tracing soil leakage in karst region through rare earth element

A rare earth element and karst technology, applied in the field of using rare earth elements to trace soil leakage in karst areas, achieves the effects of high accuracy, simple operation and universal applicability

Active Publication Date: 2018-10-02
GUIZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The aforementioned methods are mainly applicable to non-karst areas and slopes with runoff sub-regions. For karst areas with special erosion types,

Method used

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  • Method of tracing soil leakage in karst region through rare earth element
  • Method of tracing soil leakage in karst region through rare earth element
  • Method of tracing soil leakage in karst region through rare earth element

Examples

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Embodiment

[0079] Example: see Figure 1-4 , a method of using rare earth elements to trace soil leakage in karst areas, comprising the following steps:

[0080] (1) With the method of the present invention, in Shangba Village, Qingyan Town, Huaxi District, Guiyang City, Guizhou Province, choose the rocky desertification slope where carbonate rock is dolomite, and select 6 0.5m * 0.5m observation areas (i.e. stone grooves or cracks) ), record its basic information as shown in Table 1.

[0081] Table 1 Basic conditions of cracks at observation points

[0082]

[0083] (2) With the method of the present invention, in the selected observation area, the 33cm×33cm grid method is used to collect soil samples with a layer thickness of 2cm and soil samples at the rock-soil interface to a depth of 16cm.

[0084] (3) With the method of the present invention, ICP-MS is used to measure the content of rare earth elements in the background soil sample, and the rare earth elements used for tracing...

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Abstract

The invention discloses a method of tracing soil leakage in a karst region through a rare earth element. The method is characterized by comprising the steps of selecting an observation area accordingto a study, collecting and testing background values of various rare earth elements in the selected observation area, selecting a tracing rare earth element, calculating a release amount, preparing and distributing a tracing soil sample by a band method and a section method, marking a surface soil position by drawing a line, collecting and testing a rare earth element content selected after an observation period, and calculating and analyzing the underground soil leakage. The method traces the soil loss/leakage through the rare earth element, can quantitatively define contribution of surface soil loss and underground leakage in a stony desertification area, and is universal in applicability, high in accuracy and simple to operate in the karst region.

Description

technical field [0001] The invention belongs to the fields of soil erosion, water and soil conservation and environmental science, and in particular relates to a method for tracing soil loss in karst areas by using rare earth elements. Background technique [0002] Long-term karstification has resulted in multi-level and multi-level surface and underground double-layer structures integrated with water, soil, rock and organisms in the karst landform, making the water cycle process and soil erosion process in this area unique and complex, resulting in a series of Special environmental geological problems, such as soil erosion, rocky desertification, land subsidence and subsidence, etc. Soil erosion in karst areas is an important factor in the degradation of its ecological environment, which seriously restricts the sustainable development of agriculture in this area. Fully revealing the occurrence and migration mechanism of soil erosion in karst areas is the key to controlling ...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 彭旭东戴全厚丁贵杰李昌兰
Owner GUIZHOU UNIV
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