Method for recovering wind prevention and sand fixation functions of degenerated artificial sacsaoul forest

A wind-proof and sand-fixing, artificial technology, applied in the field of desertification prevention and control, can solve problems such as groundwater level drop, and achieve the effects of reducing wind erosion, weakening wind speed, and reducing the amount of sand transported.

Active Publication Date: 2014-04-16
GANSU DESERT CONTROL RES INST
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However, groundwater levels continue to decline...

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  • Method for recovering wind prevention and sand fixation functions of degenerated artificial sacsaoul forest
  • Method for recovering wind prevention and sand fixation functions of degenerated artificial sacsaoul forest

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[0012] The present invention will be further described below in conjunction with specific examples. The exemplary embodiments and illustrations of the present invention are used to explain the present invention, but not as a limitation to the present invention.

[0013] A method for recovering the windproof and sand-fixing function of degraded artificial Haloxylon forest, comprising the steps of:

[0014] 1) Set plastic grid sand barriers, wheat straw sand barriers or clay sand barriers with a width of 300m on the windward side of the degraded artificial Haloxylon forest in the desert-oasis transition zone, on both sides of the road and at the wind-blown sand outlet, to increase surface roughness and improve windbreak and sand fixation function; where:

[0015] The plastic grid sand barrier is made of high-density polyethylene as the main raw material, added with HALS-3 stabilizer, ultraviolet absorber, and antioxidant materials, which can be recycled and reused; its height is...

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Abstract

The invention discloses a method for recovering wind prevention and sand fixation functions of a degenerated artificial sacsaoul forest. The method comprises the steps that a plastic mesh sand-protecting barrier or a wheat straw sand-protecting barrier or a clay sand-protecting barrier with the width of 200-300m is arranged on a windward side in degenerated artificial sacsaoul forests in a desert oasis transitional zone, two sides of a road, a wind sand gap and other places, terrain roughness is increased, the wind prevention and sand fixation functions are improved, under the premise that rainfall bearing density of the artificial sacsaoul forest is guaranteed, sacsaouls are planted in the plastic mesh sand-protecting barrier or the wheat straw sand-protecting barrier or the clay sand-protecting barrier in a complementary mode, and a preserved density of the sacsaoul forest in a desert area with 110mm rainfall is made to reach 570-600 plants/hm2. Compared with the prior art, the method greatly improves the surface roughness of a degenerated artificial sacsaoul forestland, wind speed of a ground layer is reduced, drift sand is fixed, wind erosion is reduced, a certain recovery effect is performed on degenerated vegetation and the environment thereof, after the plastic mesh sand-protecting barrier or the wheat straw sand-protecting barrier or the clay sand-protecting barrier is arranged, effective protective wind speed in the degenerated artificial sacsaoul forest is improved to 21m/s or 22m/s or 16m/s from 7.9m/s, and sand output in the forest is reduced by 97.3% or 99.9% or 91.4% respectively compared with a reference.

Description

technical field [0001] The invention relates to the technical field of desertification prevention and control, in particular to a method for restoring the windproof and sand-fixing function of a degraded artificial Haloxylon forest. Background technique [0002] Haloxylon is a shrub of Chenopodiaceae, the first batch of third-level protected plants in my country, and has the title of "King of Desert Plants". It is widely distributed in the desert areas of Central Asia. Haloxylon forest has the reputation of "desert forest" and is the most widely distributed vegetation type in the desert area of ​​the hinterland of Asia. Haloxylon tender stems are rich in nutrients and a moderate amount of salt, which is an excellent forage grass that camels like to eat; the material is hard and brittle, and has a high combustion value. The host plant of Cistanche deserticola has important economic value. At the same time, Haloxylon has the ecological adaptation characteristics of drought r...

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Application Information

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IPC IPC(8): A01B77/00
CPCY02A40/22
Inventor 马全林樊宝丽刘虎俊徐先英
Owner GANSU DESERT CONTROL RES INST
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