CN210184096U

CN210184096U - Groove structure for growing forest and grass on sand wasteland

Info

Publication number: CN210184096U
Application number: CN201920995661.0U
Authority: CN
Inventors: Zhaofeng Chang; 常兆丰
Original assignee: Gansu Desert Control Research Institute
Current assignee: Gansu Desert Control Research Institute
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-27
Anticipated expiration: 2029-06-28

Abstract

The utility model belongs to the field of desert ecology, in particular to a groove structure for growing forest and grass on a sand wasteland; a plurality of parallel grooves are arranged on the wasteland along the vertical main wind direction, the edge of the groove at the downwind side of each groove is provided with a soil bank, and the windward slope surface of the soil bank is provided with a rain collecting slope surface. Under the action of wind force, accumulated sand is collected in the groove, the rain collecting slope surface stores precipitation in the accumulated sand in the groove, the permeability of the accumulated sand in the groove is high, the rainwater flowing down from the precipitation and rain collecting slope surface can be stored, the accumulated sand can prevent capillary water from rising, and the evaporation loss of water in the accumulated sand is effectively reduced. The desert soil is rich in seed banks, the plant seeds are gathered in the furrows along with sand under the action of wind power, and the plant seeds grow and breed when meeting proper soil moisture conditions, so that vegetation can be formed in the furrows. The utility model discloses the clay sand wasteland of specially adapted arid sand district can effectively promote desert vegetation to resume.

Description

Groove structure for growing forest and grass on sand wasteland

Technical Field

The utility model belongs to desert ecology field, concretely relates to husky deserted land is raised forest and is educated grass slot structure, and the argillaceous husky wasteland beach ground of specially adapted arid sand district can effectively promote the recovery of desert vegetation.

Background

Desertification is one of the biggest ecological threats facing the world, and the sand storm is the most typical expression mode of desertification. In arid desert areas, rainfall is rare, vegetation is sparse, large-area sand surfaces and sandy wastelands are exposed, and dry and exposed sand surfaces can be blown up by strong wind in windy weather to form sand storms or wind-blown sand flows. For many years, the most important measure for sand prevention and control is afforestation. However, in arid sand areas where the underground water level is deep and plants cannot be utilized, and rainfall is scarce, due to the limitation of water conditions, the saplings are withered or dead after growing for several years, and the protection function is lost.

In arid desert areas, large areas of deserted beach areas, such as the sand areas of the West corridor of Gansu river, exist besides sand dunes. The sandy wasteland generally has higher clay content, compact and hard soil, rare rainfall can be retained on the soil surface and is difficult to infiltrate, and the evaporation capacity of the desert area is large, so the desert area is evaporated quickly and lost inefficiently. How to fully utilize less rainfall is a problem which is always explored for years in the aspect of sand prevention and control scientific research.

Disclosure of Invention

An object of the utility model is to provide a simple structure, implement easily, keep moisture, be favorable to the trees and grass seeds to germinate the husky wasteland that grows and grow to raise the woods groove structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a groove structure for growing grass in the forest and on the sand wasteland; the method is characterized in that: a plurality of parallel grooves are arranged on the wasteland along the vertical main wind direction, the edge of the groove at the downwind side of each groove is provided with a soil bank, and the windward slope surface of the soil bank is provided with a rain collecting slope surface.

The sand wasteland is generally flat, consists of a large amount of clay, has hard surface, is not easy to infiltrate precipitation, and is retained on the surface to be quickly evaporated and lost. The utility model discloses an excavate a plurality of parallel slots along perpendicular main wind direction on the deserted and barren beach, utilize the ditching groove to pile up into the low bank of earth in slot downwind one side from the soil that the ditch was excavated to it is domatic to have set up collection rain at the windward domatic of low bank of earth, forms collection rain domatic leaning on this slot one side promptly. Under the action of wind force, accumulated sand can be gathered in the groove, a sand accumulation groove surface is formed on the upper surface of the groove, the rain collection slope surface stores precipitation in the accumulated sand in the groove, the permeability of the accumulated sand in the groove is high, the precipitation and rainwater flowing down from the rain collection slope surface can be stored, the accumulated sand can prevent capillary water from rising, and the evaporation loss of water in the accumulated sand is effectively reduced.

Scientific research shows that the seed bank in the desert soil is abundant, on one hand, a certain amount of plant seeds exist in the accumulated sand in the groove; on the other hand, the groove surface of the groove with accumulated sand can block the plant seeds. The plant seeds grow and breed when meeting proper soil moisture conditions, and the necessary conditions for plant growth are met in the groove, so that vegetation is formed on the sand accumulation groove surface of the groove. The annual precipitation of the civil sand area is 110mm, and the preliminary test result shows that one groove can form a vegetation zone with good growth vigor. Along with the change of precipitation, namely the change of the moisture content in the accumulated sand of the ditch, the vegetation in the ditch can naturally adjust the density of the ditch. The utility model discloses the clay sand wasteland of specially adapted arid sand district can effectively promote desert vegetation to resume.

Drawings

FIG. 1 is a longitudinal sectional view of the present invention;

fig. 2 is a top view of the present invention.

In the figure: 1-groove, 2-ridge, 201-windward slope of ridge, 3-sand accumulation, 301-groove surface,

4-vegetation, 5-main wind direction, W-groove width, H-groove depth and L-space between two grooves.

Detailed Description

As shown in fig. 1 and 2; a groove structure for growing grass in the forest and on the sand wasteland; a plurality of mutually parallel grooves 1 are arranged on the wasteland along the vertical main wind direction 5, the edge of the groove 1 at the downwind side of each groove 1 is provided with a terrace 2, and the windward slope 201 of the terrace is provided with a rain collecting slope. The arrows in fig. 1 and 2 indicate the main wind direction 5.

The width W and depth H of the groove are preferably 60-100 cm, and the distance L between two grooves is preferably 3-5 m. In order to form a larger rain collecting slope surface, the windward slope surface 201 of the ridge is gentler than the leeward slope surface, in order to increase the rain collecting capacity of the ridge, the windward slope surface of the ridge is compacted and leveled, and the windward slope surface of the ridge is made into a flat and hard slope surface.

The side of the ridge 2 close to the groove 1 is a windward slope 201, accumulated sand 3 is collected in the groove under the action of wind power, after one or more wind seasons, the groove can be filled with fine sand grains, a sand accumulation groove surface 301 is formed on the upper surface of the groove, when the rainfall intensity is high, the windward slope of the ridge is a rain collection slope, rainfall is stored in the accumulated sand in the groove by the rain collection slope, the accumulated sand in the groove is loose and high in permeability, and rainfall and rainwater flowing down on the rain collection slope can be stored. The sand accumulation water condition in the groove is good, the groove surface of the surface layer is stable, the seed bank in the desert soil is abundant, the plant seeds are gathered in the groove along with sand under the action of wind power, and the plant seeds can grow and breed when meeting the proper soil water condition, so that shrubs or herbaceous vegetation 4 can be formed in the groove.

The utility model discloses an application method roughly as follows: firstly, selecting a sandy wasteland and determining the local main wind direction; a plurality of parallel lines vertical to the main wind direction are vertically drawn out from the main wind direction, grooves are dug out along the parallel lines, and dug soil is accumulated on the downwind edge of the groove 1 to be manufactured into a ridge 2; and the side of the ridge close to the groove, namely the windward slope 201 of the ridge, is tapped and leveled; the desert soil contains abundant plant seeds, sand grains containing the plant seeds can be fully accumulated in the grooves after one or more strong winds or one or more wind seasons, rain water and rain water flowing from the rain collecting slope surface of the ridge can be stored in the accumulated sand, a moisture condition is provided for the germination and growth of the plant seeds, and shrubs or herbaceous vegetation 4 can be formed in the grooves 1.

Claims

1. The utility model provides a husky wasteland is grown forest and is educated grass slot structure which characterized in that: a plurality of mutually parallel grooves (1) are arranged on the wasteland along the vertical main wind direction (5), the downwind side of each groove (1) and the edge of the groove (1) are provided with terraces (2), and the windward slope surfaces (201) of the terraces are provided with rain collecting slope surfaces.

2. The trench structure for growing grass in sandy wasteland according to claim 1, wherein: the windward slope surface (201) of the ridge is gentler than the leeward slope surface.

3. The sand wasteland afforestation grass raising trench structure according to claim 1 or 2, wherein: the width (W) and depth (H) of the groove are 60-100 cm, and the distance (L) between the two grooves is 3-5 m.

4. The trench structure for growing grass in sandy wasteland as claimed in claim 3, wherein: the windward slope surface (201) of the ridge is a flat and hard slope surface.