Simulation method for researching biological crusts in water and soil loss situation of karst rocky desertification area

A biocrust and simulation method technology, applied in the field of soil erosion research in karst rocky desertification areas, can solve problems such as the lack of impact of biocrust soil erosion

Inactive Publication Date: 2019-12-20
GUIZHOU NORMAL UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a simulation method for studying the soil and water loss in karst rocky desertification areas by biological crusts, so as to solve the current lack of research methods for the impact of biological crusts on water and soil loss in karst rocky desertification areas question

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  • Simulation method for researching biological crusts in water and soil loss situation of karst rocky desertification area
  • Simulation method for researching biological crusts in water and soil loss situation of karst rocky desertification area
  • Simulation method for researching biological crusts in water and soil loss situation of karst rocky desertification area

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Embodiment

[0032] The present embodiment provides a kind of simulation method of studying biocrust to soil erosion situation in karst rocky desertification area, and it comprises the following steps:

[0033] S1. Artificially cultivate moss crusts, collect soil samples in layers in the target area, crush the soil samples in different layers, and place them in a ventilated place for air-drying; in this embodiment, layered When collecting, the first layer is 0-10cm from the ground, and the second layer is 10-20cm; the air-drying time for soil samples is 8-12 days

[0034] S2. After air-drying, the soil samples of different layers are stacked in sequence according to the layer order of the soil samples in the original target area and put into the simulation box until the upper top surface of the soil sample is flush with the upper top overflow end of each simulation box; For the soil sample layer, first spread the second layer of soil samples into the simulation box, and level the soil surf...

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Abstract

The invention discloses a simulation method for researching biological crusts in the water and soil loss situation of a karst rocky desertification area, and belongs to the technical field of environmental research. The simulation method comprises the following steps: S1, artificially cultivating moss crusts to prepare soil samples in a target area; S2, stacking the soil samples at least twice tobe put into simulation boxes; S3, taking one simulation box as a blank control group, and transplanting moss crusts on the upper top surfaces of the soil samples in the remaining simulation boxes; S4,simulating natural rainfall conditions, and carrying out alternate artificial rainfalls on the simulation boxes; and respectively collecting a runoff mud-water mixture on the surface layers of the soil samples and a bottom runoff mud-water mixture in the simulation boxes in a single rainfall process; S5, separating the mud-water mixtures, and weighing and recording the mud-water mixtures; and S6,calculating a runoff coefficient, a sediment yield specific gravity and a sediment transport modulus. The simulation method solves the problem of lack of research means for influence of biological crusts on water and soil loss in the karst rocky desertification areas at present.

Description

technical field [0001] The invention relates to the technical field of research on water and soil loss in karst rocky desertification areas, in particular to a simulation method for studying the effect of biological crusts on water and soil loss in karst rocky desertification areas. Background technique [0002] Biological soil crusts, also known as biological soil crusts, soil microbial crusts, etc., are composed of microbacteria, fungi, algae, lichens, mosses and other cryptogamous plants and their hyphae, secretions, etc. The complex formed by knots is an important type of land cover (more than 40%) in arid and semi-arid regions. Biological crust is also one of the most characteristic biological landscapes of partial soil desertification. The existence of biological crust is of great significance to the fixation of desert, the physical, chemical and biological characteristics of soil surface, and the resistance of soil to wind erosion and water erosion. Biological crust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 李晓娜程才李玉杰张远东高敏
Owner GUIZHOU NORMAL UNIVERSITY
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