CN103718687A - Method for recovering wind prevention and sand fixation functions of degenerated artificial sacsaoul forest - Google Patents
Method for recovering wind prevention and sand fixation functions of degenerated artificial sacsaoul forest Download PDFInfo
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- CN103718687A CN103718687A CN201410014534.XA CN201410014534A CN103718687A CN 103718687 A CN103718687 A CN 103718687A CN 201410014534 A CN201410014534 A CN 201410014534A CN 103718687 A CN103718687 A CN 103718687A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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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
The present invention relates to desertification control technical field, particularly a kind of Degenerated Artificial Cakcayr Forest method of functional rehabilitation of checking winds and fixing drifting sand.
Background technology
Haloxylon chico, the first batch of three-level protective plant of China, has " king of desert plant " title, is distributed widely in Desert Area, the Central Asia.Cakcayr Forest has the laudatory title of " desert forest ", is the vegetation pattern the most widely that distributes in inward asia Desert Regions.In the tender stem of sacsaoul, being rich in nutrition and appropriate salinity, is the good forage grass of camel happiness food; Material is hard and crisp, and fuel value is high, is a kind of good Fuel-plantation Trees that has the title of " desert coal alive ", is again the host plant of medicinal plant saline cistanche, has important economic worth.Simultaneously, sacsaoul has the Ecological adaptation of drought resisting, cold-resistant, Salt And Alkali Tolerance, barren-resistant and happiness dry environment, be used as the good seeds of checking winds and fixing drifting sand, in Northwest arid district, set up the artificial Cakcayr Forest of large area, for NORTHWEST CHINA, portion defends and controls sand, ensure ecotope stable with Region Sustainable Development in play an important role.Desert oasis transitional zone, as to disturbing sensitizing range, very easily develops into desertification land under Anthroposphere, is the key area of China's Desert Regions Ecological Protection and Development, is also the core space that artificial Cakcayr Forest is built.But, because the extensive groundwater abstraction in region causes subterranean water level continuous decrease.Wherein Shiyanghe River downstream subterranean water level drops to current nearly 20m by the 2-3m of the sixties in last century, has exceeded the critical subterranean water level 10m of sacsaoul growth, causes that artificial Cakcayr Forest decays, the 1650 strains/hm of Cakcayr Forest density when building
2constantly reduce, wherein the remaining density of active dune Cakcayr Forest approaches precipitation carrying density 570-600 strain/hm
2, and the remaining density of fixed dune Cakcayr Forest is only 375-525 strain/hm
2, the function of checking winds and fixing drifting sand significantly reduces, and the safeguard function that recovers the artificial Cakcayr Forest such as arid biogeographic zone desert oasis transitional zone, road both sides and dust storm mouth becomes the research of arid biogeographic zone ecological recovery and one of core missions of building.
Summary of the invention
The object of the invention is to provide a kind of Degenerated Artificial Cakcayr Forest method of functional rehabilitation of checking winds and fixing drifting sand.
For achieving the above object, the present invention implements according to following technical scheme:
The check winds and fix drifting sand method of functional rehabilitation of Degenerated Artificial Cakcayr Forest, comprises the steps:
1) in the Degenerated Artificial Cakcayr Forests such as desert oasis transitional zone, road both sides and dust storm mouth, windward side arranges plastic grid sand-protecting barrier, wheat straw sand-protecting barrier or the clay sand-protecting barrier that width is 200-300m, increases roughness of ground surface, improves the function of checking winds and fixing drifting sand;
2) guaranteeing under sacsaoul precipitation carrying density prerequisite, after-culture sacsaoul in plastic grid sand-protecting barrier, wheat straw sand-protecting barrier or clay sand-protecting barrier, makes the preservation density of the husky district of precipitation 110mm sacsaoul reach 570-600 strain/hm
2.
As preferably, described plastic grid sand-protecting barrier be take high density polyethylene (HDPE) as primary raw material, adds HALS-3 stabilizing agent, ultra-violet absorber, antioxidant materials and makes, recyclable recycling; It is highly 20cm, makes 1m * 1m grid, coefficient of air infiltration 35-45%.
As preferably, after selecting hand harvest, described wheat straw sand-protecting barrier remains straw, be laid to 1m * 1m grid, it is highly 15-20cm that grid exposes, sand buries 10-15cm.
As preferably, described clay sand-protecting barrier is selected lowland warp clay between mound, is laid to determinant sand-protecting barrier, the vertical prevailing wind direction of direction, height 25cm, bottom width 45cm, line-spacing 3m.
Compared with prior art, the present invention, guaranteeing greatly to improve Degenerated Artificial Cakcayr Forest roughness of ground surface under the water balance prerequisite of forest land, weakens ground layer wind speed, reduces the sediment discharge under sand-fixation forest, reduce wind erosion, also degeneration vegetation and environment thereof are also had to certain restitution simultaneously; Lay after plastic grid sand-protecting barrier, wheat straw grid sand-protecting barrier or clay sand-protecting barrier, in Degenerated Haloxylon Ammodendron woods, effectively protection wind speed is brought up to respectively 21m/s, 22m/s and 16m/s by 7.9m/s, and in woods, sediment discharge contrasts and reduces respectively 97.3%, 99.9% and 91.7%.
Embodiment
Below in conjunction with instantiation, the invention will be further described, in illustrative examples and the explanation of this invention, is used for explaining the present invention, but not as a limitation of the invention.
The check winds and fix drifting sand method of functional rehabilitation of Degenerated Artificial Cakcayr Forest, comprises the steps:
1) in the Degenerated Artificial Cakcayr Forests such as desert oasis transitional zone, road both sides and dust storm mouth, windward side arranges plastic grid sand-protecting barrier, wheat straw sand-protecting barrier or the clay sand-protecting barrier that width is 300m, increases roughness of ground surface, improves the function of checking winds and fixing drifting sand; Wherein:
Plastic grid sand-protecting barrier be take high density polyethylene (HDPE) as primary raw material, and interpolation HALS-3 stabilizing agent, ultra-violet absorber, antioxidant materials are made, recyclable recycling; It is highly 20cm, makes the net volume of 1m * 1m grid, coefficient of air infiltration 35-45%;
Wheat straw sand-protecting barrier remains straw after selecting hand harvest, is laid to 1m * 1m grid, and it is highly 15-20cm that grid exposes, and sand buries 10-15cm;
Clay sand-protecting barrier is selected alluvial clayed soil in lowland between mound, is laid to sand-protecting barrier height 25cm, bottom width 45cm, line-spacing 3m;
2) guaranteeing under the early stage of sacsaoul precipitation carrying density that plastic grid sand-protecting barrier, wheat straw sand-protecting barrier, clay sand-protecting barrier after-culture sacsaoul make the preservation density of the husky district of precipitation 110mm sacsaoul reach 570-600 strain/hm
2.
Wherein, plastic grid sand-protecting barrier, wheat straw sand-protecting barrier, clay sand-protecting barrier Degenerated Haloxylon Ammodendron woods and Degenerated Haloxylon Ammodendron forest form ratio without sand-protecting barrier are set, indices is as shown in the table:
Use method of the present invention, greatly improve roughness of ground surface under Degenerated Artificial Cakcayr Forest, weaken wind speed near the ground, tackling quicksand, reduces wind erosion, also degeneration vegetation and environment thereof is also had to certain restitution simultaneously.Lay after plastic grid sand-protecting barrier, wheat straw grid sand-protecting barrier and clay sand-protecting barrier, in Degenerated Haloxylon Ammodendron woods, effectively protection wind speed is brought up to respectively 21m/s, 22m/s and 16m/s by 7.9m/s, and in woods, sediment discharge contrasts and reduced respectively 97.3%, 99.9% and 91.7%.
Technical scheme of the present invention is not limited to the restriction of above-mentioned instantiation, and the technology distortion that every technical scheme according to the present invention is made, within all falling into protection scope of the present invention.
Claims (4)
1. the Degenerated Artificial Cakcayr Forest method for functional rehabilitation of checking winds and fixing drifting sand, is characterized in that, comprises the steps:
1) in the Degenerated Artificial Cakcayr Forests such as desert oasis transitional zone, road both sides and dust storm mouth, windward side arranges plastic grid sand-protecting barrier, wheat straw sand-protecting barrier or the clay sand-protecting barrier that width is 200-300m, increases roughness of ground surface, improves the function of checking winds and fixing drifting sand;
2) guaranteeing that sacsaoul precipitation carrying density is under early stage, after-culture sacsaoul in plastic grid sand-protecting barrier, wheat straw sand-protecting barrier or clay sand-protecting barrier, makes the husky district of precipitation 110mm sacsaoul density reach 570-600 strain/hm
2.
2. the Degenerated Artificial Cakcayr Forest according to claim 1 method of functional rehabilitation of checking winds and fixing drifting sand, it is characterized in that: described plastic grid sand-protecting barrier be take high density polyethylene (HDPE) as primary raw material, interpolation HALS-3 stabilizing agent, ultra-violet absorber, antioxidant materials are made, recyclable recycling; It is highly 20cm, makes 1m * 1m grid, coefficient of air infiltration 35-45%.
3. the Degenerated Artificial Cakcayr Forest according to claim 1 function recovering method of checking winds and fixing drifting sand, is characterized in that: after described wheat straw sand-protecting barrier is selected hand harvest, remain straw, be laid to 1m * 1m grid, it is highly 15-20cm that grid exposes, and sand buries 10-15cm.
4. the Degenerated Artificial Cakcayr Forest according to claim 1 function recovering method of checking winds and fixing drifting sand, is characterized in that: described clay sand-protecting barrier is selected alluvial clayed soil in lowland between mound, is laid to determinant sand-protecting barrier, direction is vertical with prevailing wind direction, height 25cm, bottom width 45cm, line-spacing 3m.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164863A (en) * | 2014-08-21 | 2014-11-26 | 甘肃省治沙研究所 | Arid area desert sand fixation method |
| CN104186169A (en) * | 2014-08-29 | 2014-12-10 | 青海省农林科学院 | Method for arranging highland barley living sand barrier in moving dune |
| CN104213550A (en) * | 2014-09-16 | 2014-12-17 | 兰州大学 | Plastic grid-shaped sand barrier for wind prevention and sand fixation |
| CN104365316A (en) * | 2014-09-12 | 2015-02-25 | 甘肃省治沙研究所 | Method for rapidly recovering close-to-nature sand stabilizing vegetation of shifting sandy land in semi-desert area |
| CN108094064A (en) * | 2017-12-22 | 2018-06-01 | 西北师范大学 | In the method for moving dunes plantation sacsaoul inoculating cistanche salsa |
| CN109924072A (en) * | 2018-12-25 | 2019-06-25 | 甘肃省治沙研究所 | A kind of method of Alpine-arctic Pastoral sandy land planting forage grass |
| CN110800540A (en) * | 2019-11-30 | 2020-02-18 | 内蒙古蒙草生态环境（集团）股份有限公司 | Seedling raising and afforestation method for haloxylon ammodendron in desert area |
| CN111699908A (en) * | 2020-07-24 | 2020-09-25 | 甘肃省治沙研究所 | Method for stumping and rooting of haloxylon ammodendron |
| CN111699907A (en) * | 2020-07-24 | 2020-09-25 | 甘肃省治沙研究所 | Haloxylon ammodendron planting method for increasing root system nutrient |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164863A (en) * | 2014-08-21 | 2014-11-26 | 甘肃省治沙研究所 | Arid area desert sand fixation method |
| CN104186169A (en) * | 2014-08-29 | 2014-12-10 | 青海省农林科学院 | Method for arranging highland barley living sand barrier in moving dune |
| CN104186169B (en) * | 2014-08-29 | 2017-01-25 | 青海省农林科学院 | Method for arranging highland barley living sand barrier in moving dune |
| CN104365316A (en) * | 2014-09-12 | 2015-02-25 | 甘肃省治沙研究所 | Method for rapidly recovering close-to-nature sand stabilizing vegetation of shifting sandy land in semi-desert area |
| CN104213550A (en) * | 2014-09-16 | 2014-12-17 | 兰州大学 | Plastic grid-shaped sand barrier for wind prevention and sand fixation |
| CN108094064A (en) * | 2017-12-22 | 2018-06-01 | 西北师范大学 | In the method for moving dunes plantation sacsaoul inoculating cistanche salsa |
| CN109924072A (en) * | 2018-12-25 | 2019-06-25 | 甘肃省治沙研究所 | A kind of method of Alpine-arctic Pastoral sandy land planting forage grass |
| CN110800540A (en) * | 2019-11-30 | 2020-02-18 | 内蒙古蒙草生态环境（集团）股份有限公司 | Seedling raising and afforestation method for haloxylon ammodendron in desert area |
| CN111699908A (en) * | 2020-07-24 | 2020-09-25 | 甘肃省治沙研究所 | Method for stumping and rooting of haloxylon ammodendron |
| CN111699907A (en) * | 2020-07-24 | 2020-09-25 | 甘肃省治沙研究所 | Haloxylon ammodendron planting method for increasing root system nutrient |
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