Green desert ground surface windproof structure

Abstract

The invention discloses a green desert ground surface windproof structure. A windproof layer covers the desert ground surface, and the windproof layer is obtained through microorganism seepage-proofing and strengthening fluid treatment; the content of sandy soil in desert with the particle size being 0.075-60 mm is larger than 50%, and microorganisms in strengthening fluid are aerobiotic type bacteria; or the content of sandy soil in desert with the particle size being smaller than or equal to 0.075 is larger than or equal to 50%, the microorganisms in strengthening fluid are facultative anaerobic bacteria, and the windproof layer cannot be blown and scattered at the maximum wind speed of 20 m / s. The microorganism reaction process depended by the green desert ground surface windproof structure is the process existing in the soil ecological environment, and the environment cannot be polluted; a microorganism-plant combined sand treatment technology is adopted, and the survival rate is higher compared with pure planting of plants; the green desert ground surface windproof structure mainly depends on the biocement technology, the effect is high in speed compared with biological crust generated by utilizing other bacteria, fungi, blue-green algae and the like, and basically no requirement exists for the environment.

Description

Technical field [0001] The invention relates to a desert structure, in particular to a green desert surface windproof structure, belonging to the technical field of desert management. Background technique [0002] Desertification is a worldwide ecological and environmental problem. According to incomplete statistics, deserts and desertified lands account for 55% of Africa, 19% for North America and Central America, 10% for South America, 34% for Asia, 75% for Australia, and 2% for Europe. The land area of ​​desertification in China is 2.622 million square kilometers, accounting for 27.4% of the country's land area. Nearly 400 million people are affected by desertification. At the same time, the direct economic loss caused by desertification is 120 billion yuan every year. [0003] At present, scholars' research on desertification is mainly focused on land desertification. Commonly used methods for desert management include plant afforestation, sand barriers, and grass grids. How...

AI Technical Summary

Problems solved by technology

But the simple planting of trees is very difficult, the depth of plant burial is very large, the survival rate of plants is very low, the effect is slow, and a lot of manpower and material resources are required.

Sand barriers and grass grids are effective quickly, but the investment is relatively large, and it is difficult to use them on a large scale

There are also new methods of soil surface crusting technology, including chemical, physical and biological crusts. Pure physical and chemical crusts are very fragile and unstable, and chemical crusts also pollute the surrounding environment to a certain extent.

The biological crust is a large amount of mucus produced by the growth of bacteria, fungi, blue-green algae, etc. These bacteria with viscous appendages and viscous liquids form crusts through cross-linking with algal substances, but this method has certain environmental impacts. requirements, and the crust grows slowly and takes effect slowly

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