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Ecological restoration method for karst rock desertification site in southwest mountainous areas

A technology for ecological restoration and rocky desertification, applied in land preparation methods, biochemical equipment and methods, and botanical equipment and methods, etc., can solve the problems of increased ecological restoration costs, large soil evaporation, and low plant emergence rate. Achieve the effect of improving water holding performance and nutrients, improving physical structure, and improving agglomeration stability

Active Publication Date: 2018-12-25
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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AI Technical Summary

Problems solved by technology

Lack of water resources, large soil evaporation and poor soil are the difficulties in ecological restoration of karst rocky desertification sites, and they are also the main reasons for low plant emergence rate, high mortality rate and increased ecological restoration costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Example 1: A method for ecological restoration of a karst rocky desertification site in Southwest Mountains, including the following steps:

[0018] (1) Collection of low plant resources algae, fungi and lichens at the karst rocky desertification site in the Southwest Mountains: In the karst rocky desertification areas of the Southwest Mountains, look for the soil surface layer with biological soil crusts, remove the gravel in the soil, and collect the soil crusts. Cortex to the production workshop, put the collected soil into a large bucket, add pure water according to the water-to-soil ratio of 1:3-5 in parts by mass, stir gently for 5-10 minutes, and then sieve in a sieve with an aperture of 0.3-0.8 mm , to obtain a suspension containing propagules of algae, fungi, and lichens produced in the restoration site;

[0019] (2) Propagation and fixation of algae, fungi and lichens: first add culture medium to the suspension containing the propagules of the above-mentioned ...

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Abstract

The invention discloses an ecological restoration method for karst desertification site in southwest mountain areas, which comprises the following steps: (1) collection lower plant resources of algae,fungi and lichens in karst desertification site in southwest mountain; (2) propagation and fixation of algae, fungi and lichens; (3) manufacture of bioactive coverings; (4) application of bioactive coverings. The bioactive material obtained by the ecological restoration method can increase the biomass of algae on the ground surface, making the site have good durability to the environment erosionof rainstorm, and the method can also improve the agglomeration stability of soil and realize the effect of bio-soil crust in a short period of time. Thus cover the biologically active material prepared by the ecological restoration method on the surface of the site soil can prevent desertification and transform the desertification site into an ecological environment suitable for plant growth.

Description

technical field [0001] The invention relates to the technical field of ecological restoration, in particular to an ecological restoration method for karst rocky desertification sites in southwest mountainous regions. Background technique [0002] Karst landform refers to various landforms formed by the dissolution of soluble rocks by water and the accompanying mechanical action. Karst landforms are widely distributed in Guangxi, Guizhou, Yunnan and other places in China. In recent years, with large-scale engineering construction and mining, the original landform structure has been changed, resulting in rocky desertification and serious soil erosion, resulting in the formation of a large number of exposed slopes in the karst landform, which cannot be restored to vegetation in a short time. Lack of water resources, large soil evaporation and poor soil are the difficulties in ecological restoration of karst rocky desertification sites, and they are also the main reasons for low...

Claims

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Application Information

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IPC IPC(8): A01G33/00A01G22/00A01G22/30A01G24/20A01G24/23A01B79/02C12N1/00
CPCA01B79/02A01G22/00A01G22/30A01G24/20A01G24/23A01G33/00C12N1/00Y02A40/80
Inventor 刘世荣王晖张小平杨传宝缪宁孟广涛刘兴良栾军伟
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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