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Sacsaoul irrigation-free vegetative cover afforestation method for draughty gravel desert region

A gravel desert and vegetation technology is applied in the field of Haloxylon ammonium irrigated vegetation afforestation in arid gravel desert areas, which can solve the problems of wasting manpower, material and financial resources, poor plant growth potential, and difficulty in obtaining results, thereby improving the survival rate, The effect of promoting growth and improving soil water retention

Inactive Publication Date: 2015-03-11
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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Problems solved by technology

[0007] The lack of soil moisture in gravel desert areas in arid areas often becomes a key constraint factor restricting plant growth and vegetation recovery. Traditional afforestation techniques have not solved the problems of efficient use of natural precipitation by plants and coping with soil salinization, resulting in poor growth of plants and even Death not only wastes a lot of manpower, material and financial resources, but also hardly achieves the desired effect

Method used

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  • Sacsaoul irrigation-free vegetative cover afforestation method for draughty gravel desert region

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Embodiment 1

[0023] In 2004, it was located next to Kebai Expressway (N45) in Karamay City, Junggar Basin o 21'49'', E84 o 35′44′′) for 2hm 2 Experimental research, the experimental area is a typical northern temperate arid continental climate, dry and less rain is the main feature of the climate. The annual average rainfall is 108.9 mm, and the evaporation is 3008.9 mm, which is about 20.8 times the rainfall. It belongs to the salinized gravel desert area with flat terrain and high gravel content. Gypsum and soluble salt will appear in the soil at a depth of about 40 Accumulation layer, pH value is 7.25, 0-100cm average salt content is 1.36%, the plant growth environment is very fragile, vegetation coverage is low, and the number of species is small. Terrain modification was carried out in September 2004 and planted in March 2005;

[0024] Plant row spacing selection: On the basis of meeting the National Standard Afforestation Technical Regulations of the People's Republic of China GB / ...

Embodiment 2

[0032] In 2013, on both sides of Kuia Expressway (N45) in Karamay City o .18'18'', E84 o 27'56'') (N 45 o .16′24′′, E 84 o .27′04′′) in the gravel desert area, 300 mu of Haloxylon-free irrigation vegetation was promoted, and the survival rate reached 82%;

[0033] Plant row spacing selection: On the basis of meeting the National Standard Afforestation Technical Regulations of the People's Republic of China GB / T15776-1995 Haloxylon desert afforestation density is between 660 and 1650 plants per mu, choose Haloxylon planting plant row spacing as 1.5m×10m;

[0034] Terrain improvement: use excavator to dig snow ditch 1 along the slope in autumn, the ditch direction is parallel to the surface contour line, the ditch width is 0.5m, the ditch depth is 0.8m, the ditch distance is 6-10m, the ditch length is 45m, and 5m is left In the plant protection channel, the soil excavated from the snow-packed ditch 1 is piled to a lower position on one side of the snow-packed ditch 1 to f...

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Abstract

The invention relates to a sacsaoul irrigation-free vegetative cover afforestation method for a draughty gravel desert region. According to the method disclosed by the invention, an excavator is used for deeply digging a planting cavity; a planting substrate screening technology can improve plant rhizosphere soil condition; meanwhile, terrain modification is performed so that natural rainfall is re-distributed in the soil to achieve a snow and water accumulation effect, the water content of the sacsaoul rhizosphere soil is changed, the growth of sacsaoul is promoted, the biomass liveweight is increased, and thus the aim of well maintaining continuous existence of an artificial sacsaoul forest for a long time by depending on a natural water resource in the living space is realized. The process is suitable for restoration and rebuilding of an irrigation-free vegetative cover which takes the sacsaoul as constructive species for deteriorated and damaged vegetative covers of the draughty gravel desert regions under an environmental condition that the average annual precipitation is larger than 100mm and snowfall is stable in winter.

Description

technical field [0001] The invention belongs to the category of vegetation ecological restoration, and relates to a method for afforestation of Haloxylon-free vegetation in dry gravel desert areas with stable snowfall in winter. Background technique [0002] Haloxylon ( Haloxylon ammodendrom (C.A.Mey.) Bunge) desert accounts for one-tenth of the entire desert (excluding mountains) area in Northwest my country, about 110,000 square kilometers. Among them, Haloxylon desert has the largest area, accounting for 37.3% of the total vegetation area of ​​Haloxylon desert in China. The area of ​​gravel desert in Xinjiang ranks first in the country. It is mainly distributed in the alluvial fan in front of the mountain. It plays an important role in stabilizing the ecological environment in arid areas. Therefore, Haloxylon is the preferred native plant species for afforestation in arid gravel desert areas. [0003] With the rapid development of the economy, the degree of human imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G23/00
CPCA01G23/00Y02A40/22Y02P60/40
Inventor 严成杨更强廖帆魏岩宋革新武晓亚
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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