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Method for preventing water erosion desertification by using biological crust

A technology of biological crust and water control, which is applied in the fields of desertification prevention and ecological environment restoration, can solve the problems of no biological crust, etc., and achieve the effects of improving soil moisture status, extensive management, and strong soil fixation ability

Inactive Publication Date: 2011-10-05
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The method of using biological crust to control wind erosion desertification (patent application No. 99116583.7, 200510063092.9, 200510055383.3) and stony desertification (patent application No. 200410098476.X, 200410098477.4) has been described, but there is no biological crust in the field of prevention and control of water erosion desertification. skin application

Method used

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Embodiment 2

[0036] The artificial inoculation culture of embodiment 2 field biological crust and its water and soil conservation function

[0037] The BSC provenance was collected in the Liudaogou Watershed in the northern part of the Loess Plateau (Shenmu County, Yulin City, Shaanxi Province, 110°22′E, 38°48′N, annual average precipitation of 409mm). The biological crust in this area is dominated by mosses, the main species are Barbula vinealis, Bryum arcticum (R.Brown) B.S.G. and Bryum argenteum Hedw. rare. In this embodiment, a total of 14 sampling points under different slopes, vegetation, and soil conditions were selected, and the biocrust layer about 2 cm thick on the surface was scooped out, and the collected provenance was brought back to the indoor shade to dry, and dead branches, fallen leaves, gravel, etc. were removed. Use an ordinary pulverizer (diameter of 1.2mm sieve hole) to pulverize the sundries, fully stir and mix them, and place them in a cool place for later use.

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Abstract

The invention discloses a method for preventing water erosion desertification by using biological crust, which is to artificially inoculate a biological crust resource onto bare soil surface of a water erosion desertified area and cultivate the biological crust to allow the biological crust to cover the bear soil surface. The method comprises the following steps:1) selecting well developed natural biological crust, and shoving 10 to 30-millimeter-thick crust layer on surface for later use; 2) drying the collected biological crust in shade, removing other materials, crushing, fully stirring and uniformly mixing to obtain the biological crust resource; 3) mixing the prepared biological crust resource with fine soil according to a ratio of 1:(1-2), uniformly spreading the mixture on the soilsurface to be inoculated, covering a small amount of fine soil, and fully watering after the fine soil is covered; and 4) controlling a proper condition to promote the growth of the biological crust,namely watering, topdressing, killing pests and weeding. With the method of artificial inoculation and cultivation, a high-coverage biological crust can be formed in a short period, and the formed biological crust has obvious water and soil holding function; and the method is an effective method for treating water erosion desertification.

Description

technical field [0001] The invention belongs to the fields of desertification prevention and restoration and ecological environment restoration, and particularly relates to a method for preventing and controlling water erosion desertification by using biological crusts. Background technique [0002] Water erosion desertification is land degradation caused by water and soil erosion, and it is an important form of desertification. The land desertification problem that it constitutes together with wind erosion desertification, stony desertification, freeze-thaw desertification and saline desertification is the most serious problem currently facing our country. ecological environment problems. The results of the fourth national monitoring of desertification and sandification show that by the end of 2009, the area of ​​water-eroded desertification in my country was 260,000 square kilometers, accounting for 10% of the total desertification area, mainly distributed in the northern ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G1/00
CPCY02P60/20
Inventor 肖波王庆海赵允格
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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