Method for controlling desert through artificial and biological crust and special lichen

A lichen and artificial technology, applied in the direction of botanical equipment and methods, lichen products, applications, etc., can solve the problems of heavy mechanical sand fixation, land can not be reused, fixative aging, etc., to improve nutrient elements and biodiversity , shorten the time of maturation, the effect of easy operation

Inactive Publication Date: 2012-01-18
INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Various methods such as mechanical, chemical and biological methods have been adopted one after another, but the mechanical sand fixation is heavy and the effect is not good, while the chemical method has problems such as aging of the fixative, and the land cannot be reused.

Method used

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  • Method for controlling desert through artificial and biological crust and special lichen
  • Method for controlling desert through artificial and biological crust and special lichen
  • Method for controlling desert through artificial and biological crust and special lichen

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Example 1. Laboratory co-cultivation of Endocarpon pusillum F07020 CGMCC No.3893 and Diplosphaera chodatii A07020 CGMCC No.3892 to prepare lichen and sand fixation experiment

[0040] Endocarpon pusillum F07020 CGMCC No.3893 and the symbiotic algae Diplosphaera chodatii A07020 CGMCC No.3892 were respectively inoculated on the PDA slant medium. After 15 days of activation, when the above-mentioned symbiotic licheniform bacteria and symbiotic algae were observed on the medium After growth, the symbiotic licheniformis and symbiotic algae were transferred to PDA liquid medium for large-scale cultivation at 150 rpm. The culture period was 30 days and 20 days, respectively. The culture conditions were: dark culture of symbiotic bacteria at 22°C; 12h light (light intensity 2000lux) / 12h dark culture.

[0041] The stone fruit coat symbiotic bacteria Endocarpon pusillum F07020 CGMCC No.3893 and the symbiotic algae Diplosphaera chodatii A07020 CGMCC No.3892 cultured to the logarithmic ...

Embodiment 2

[0044] Example 2: Field sand fixation experiment

[0045] Clear 3 of about 0.5m on the flat fixed dune 2 Then use wheat straw to divide each sand surface into two parts to form a grass barrier grid. The 0.4×0.5m area is used as the spraying water control, and the 0.6×0.5m area is the spraying suspension experiment. image 3 ).

[0046] Endocarpon pusillum F07020 CGMCC No.3893 and the symbiotic algae Diplosphaera chodatii A07020 CGMCC No.3892 in the logarithmic growth phase and the lichen fragments collected in the field (identified, the lichen is Endocarpon pusillum F07020 CGMCC No.3893 and the symbiotic algae Diplosphaera chodatii A07020 CGMCC No.3892 symbiosis formed stone fruit coat) mixed with water, after mixing, the concentration is 0.5g / ml (based on the wet weight of mycelium), 0.21×10 7 Cells / ml, 5×10 -3 g / ml suspension, and then evenly spread 1L suspension per square meter on the surface of the experimental sandy soil, and irrigate with clean water every 3 days for observat...

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Abstract

The invention discloses a method for controlling a desert through an artificial and biological crust and special lichen. The method provides a complete set of products for preparing lichen. The products consist of independently packaged fungus and algae, wherein the fungus is Endocarpon pusillum F07020 CGMCC No.3893 and the algae is Diplosphaera chodatii A07020 CGMCC No. 3892. The special lichen provided by the invention is lichen formed by the Endocarpon pusillum F07020 CGMCC No. 3893 and the Diplosphaera chodatii A07020 CGMCC No.3892. According to the method disclosed by the invention, the special lichen and / or the symbiotic fungus and the symbiotic algae of the lichen are scattered on the surface of sandy soil, a crust can be formed in one year and the overage rate of the crust per square meter can reach 80 percent. By adopting the method, the formation of the lichen crust can be directly promoted, the maturation time of the miniature biological crust is shortened, the operation issimple and convenient, the sand can be effectively and permanently fixed, the nutrient elements and the biological diversities of a desert ecosystem are improved, and the formed ecological landscape not only can bring economic values to the tourism of desert areas, but also can provide materials for the urban greening of arid and semiarid areas.

Description

Technical field [0001] The invention relates to a method for treating deserts with artificial biological crusts and special lichens. Background technique [0002] China is one of the regions with the widest range of desertification and the deepest damage in the world. As of the end of 2009, the area of ​​desertified land in my country was 2,623,700 square kilometers, and the area of ​​desertified land was 1,731,100 square kilometers, accounting for 27.33% and 18.03% of the total land area respectively. And it continues to expand and spread, endangering farmland, pastures, transportation and people's lives, and causing huge losses to the country and society and economy. Taking my country’s existing desertified land as an example, the manageable area is 530,000 square kilometers. Calculated at the rate of 1,717 square kilometers (State Forestry Administration 2011) seen every year, it will take about 300 years to turn the manageable sandy land into non-desertified land. time. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H15/00A01G1/00
Inventor 魏江春杨军张涛周启明曹叔楠
Owner INST OF MICROBIOLOGY - CHINESE ACAD OF SCI
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