Desert ecological management scheme selection method, device, equipment and medium

Abstract

The invention relates to the technical field of desertification control, and discloses a desert ecological management scheme selection method, device, equipment and medium, the selection method comprises the following steps: constructing a plurality of desert ecological management schemes, and aiming at each desert ecological management scheme, setting different types of sand body barriers in sequence to form a composite sand body barrier; performing sand flow field simulation based on the geographic information of the desert area, and determining an average wind speed without a sand barrier; performing wind-sand flow field simulation on the desert area provided with the composite sand barrier to obtain an average wind speed after the sand barrier is arranged; and determining a wind speed reduction rate based on the average wind speed without the sand barrier and the average wind speed after the sand barrier is arranged, and screening out a target desert ecological management scheme with protection efficiency according to the wind speed reduction rate. According to the technical scheme, a comprehensive treatment scheme can be accurately selected, and wind prevention and sand fixation, soil improvement, plant recovery and efficient utilization of water resources are achieved.

Description

Technical Field

[0001] This application relates to the technical field of desert control, and particularly to a method, device, equipment and medium for selecting a desert ecological control solution. Background Art

[0002] With the intensification of global climate change, the problem of desertification has become increasingly serious, especially at the sand blowing outlets in arid and semi-arid regions. These areas are characterized by arid climate, strong winds, frequent sandstorms, resulting in poor soil, increased water evaporation, limited plant growth, and difficult ecosystem restoration. Long-term sand erosion and water resource scarcity, combined with human activities such as overgrazing and land reclamation, have further deteriorated the environment.

[0003] Current desert control methods such as windbreak belts and sand fixation structures, although effective in the short term, are difficult to sustain, and water resource management measures have also failed to effectively solve the problem of soil and water conservation.

[0004] Therefore, how to select a comprehensive control solution to achieve wind and sand fixation, soil improvement, plant restoration and efficient utilization of water resources, and ensure the sustainability of ecological restoration has become a key problem to be solved urgently. Summary of the Invention

[0005] This application provides a method, device, equipment and medium for selecting a desert ecological control solution, which achieves the technical effect of accurately selecting a comprehensive control solution, realizing wind and sand fixation, soil improvement, plant restoration and efficient utilization of water resources, and ensuring the sustainability of ecological restoration.

[0006] To achieve the above object, the main technical solutions adopted in this application include: In a first aspect, an embodiment of this application provides a method for selecting a desert ecological control solution, and the selection method includes: Construct multiple desert ecological control solutions, and for each desert ecological control solution, sequentially set different types of sand body barriers to form a composite sand body barrier; Based on the geographical information of the desert area, simulate the wind-sand flow field to determine the average wind speed without sand barriers; Simulate the wind-sand flow field of the desert area with the composite sand body barrier set, and obtain the average wind speed after setting the sand barrier; Based on the average wind speed without sand barriers and the average wind speed after setting the sand barrier, determine the wind speed reduction rate, and screen out the target desert ecological control solutions with protection efficacy according to the wind speed reduction rate.

[0007] A method for selecting a desert ecological governance plan provided in this embodiment can flexibly select suitable wind and sand prevention measures according to the specific needs of different desert areas by constructing multiple desert ecological governance plans and setting up a composite sand body barrier. Based on the geographical information of the desert area, a wind-sand flow field simulation is carried out. First, the average wind speed without a sand barrier is determined to provide a reference for subsequent effect evaluation. Then, the wind-sand flow field after setting up the composite sand body barrier is simulated to obtain the average wind speed after setting up the sand barrier. By comparing the wind speeds before and after setting up the sand barrier, the wind speed reduction rate is calculated, and then the target desert ecological governance plan with good protection efficiency is screened out. This process ensures that the governance plan not only has theoretical feasibility but also can actually and effectively reduce the wind speed and improve the desert ecological environment, thus providing a scientific basis and optimized decision-making for desert ecological governance.

[0008] In one embodiment, the sequential setting of different types of sand body barriers to form a composite sand body barrier includes: Set up a high-standing stacked sand body bio-solidification barrier along the main wind direction; On the leeward side of the high-standing stacked sand body bio-solidification barrier, set up a bio-mineralized flexible ecological barrier along the main wind direction; On the leeward side of the bio-mineralized flexible ecological barrier, set up a low-density sand moss grid sand fixation barrier along the main wind direction.

[0009] In this embodiment, by setting up a high-standing stacked sand body bio-solidification barrier, arranging a bio-mineralized flexible ecological barrier on its leeward side, and further installing a low-density sand moss grid sand fixation barrier on the leeward side, a multi-level wind and sand prevention and fixation system is formed. This combination effectively resists the wind and sand attacks of different wind speeds and enhances the ecological stability of the desert area. The application of bio-solidification and mineralization technologies not only improves the long-term stability of the barrier but also promotes vegetation growth and soil restoration. The flexible design and low-density barrier can flexibly respond to the changes in wind and sand flow, reduce wind and sand erosion, and improve the treatment effect by promoting plant growth and soil consolidation. Overall, through multiple protection measures and scientific governance, the ability to prevent desertification and ecological restoration is effectively improved.

[0010] In one embodiment, the setting method of the high-standing stacked sand body bio-solidification barrier is as follows: Lay sandy soil in layers: In a preset solidification template, lay the first sandy soil in layers; wherein, alkali activation materials are mixed in the first sandy soil; Spray activator: After each layer of the first sandy soil is laid, spray the activator solution; Stand and mineralize for reinforcement: After the filling of the first sandy soil is completed and the activator solution is sprayed, carry out a standing treatment; after standing, spray the first mineralization solution for reinforcement to form a high-standing stacked unit; Arrange the stacking units: arrange the high vertical stacking units into column groups according to a first adjacent preset spacing, and arrange each column group into row groups according to a second adjacent preset spacing, so as to form the high vertical stacking sand biosolidification barrier composed of the column groups and the row groups.

[0011] This embodiment effectively improves the stability and strength of the sand by filling the sand in layers and adding alkali-activated materials, ensuring that each layer of sand is fully compacted and reinforced. Spraying the activator can initiate the chemical reaction between the sand and the alkali-activated material, further enhancing the curing effect. The static treatment provides sufficient time for the mineralization reaction, improves the durability of the sand, and ensures the firmness and stability of the structure. Finally, by reasonably arranging the high vertical stacking units, a barrier with an optimized structure is formed. This arrangement not only improves the ability to resist wind and sand, but also ensures stability in long-term use. Overall, the sand body's anti-wind and sand effect is effectively enhanced, the service life is extended, and the integrity and stability of the structure are improved.

[0012] In one embodiment, the cross-sectional shape of the curing template is a trapezoidal structure; the trapezoidal structure corresponds to a template side wall angle of 30-45°, a template height of 0.5-2m, a template bottom width of 1-4m, and a template top width of 0.2-1m; The activator solution is selected from at least one of a sodium hydroxide solution or water glass with a concentration of 1-6 mol / L.

[0013] In one embodiment, the biomineralization flexible ecological barrier is arranged as follows: Filling sand: Fill the second sand in the isosceles triangle template; Mineralization primary reinforcement: after completing the second sand filling, spray the second mineralization solution for reinforcement to form a sand barrier unit; wherein the second mineralization solution is doped with a biopolymer material; the biopolymer material is selected from at least one of polyurethane, xanthan gum, artemisia gum or gum arabic with a mass percentage of 0.5-2%; Arranging sand barrier units: arranging the sand barrier units in a square manner to form a sand fixation matrix unit; Sowing seeds: sowing wind erosion-resistant plant seeds on the second sand in the sand-fixing matrix unit; wherein the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Cyperus rotundus, Astragalus astragali, Psoralea corylifolia, Psoralea corylifolia, or Artemisia ordosica; Secondary reinforcement by mineralization: After sowing the seeds of wind erosion-resistant plants, spray a low-concentration mineralizing solution for secondary reinforcement to form the biomineralized flexible ecological barrier.

[0014] In this embodiment, by spraying the second mineralization solution (including urease and calcium salt / urea cementing solution, as well as the biopolymer material incorporated in the second mineralization solution), the adhesiveness and structural strength of the sandy soil are enhanced, and the loosening and loss of the sandy soil are prevented. Then, the reinforced sand barrier units are arranged in a square to form a stable sand fixation matrix unit, which effectively disperses the wind force and enhances the overall wind prevention and sand fixation effect. Subsequently, wind erosion-resistant plant seeds are sown in the sand fixation matrix unit. These plants further hold the sandy soil through the deepening of their roots and the growth of their above-ground parts, and improve the soil structure. Finally, secondary mineralization reinforcement is carried out to form a bio-mineralized flexible ecological barrier, which further improves the stability of the sandy soil, promotes plant growth, and provides a more stable growth environment for them. This comprehensive technical solution combines physical and biological means to successfully achieve the dual goals of wind prevention and sand fixation and ecological restoration, and effectively addresses the problems of wind and sand erosion and desertification.

[0015] In one embodiment, the low-density Racomitrium canescens grid sand fixation barrier is arranged as follows: Racomitrium canescens laying: Racomitrium canescens is used to form a square pattern for laying to form grid units; Seeding: Wind erosion-resistant plant seeds are sown in the grid units; wherein, the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippohgae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia desertorum. Surface cementing: After sowing the wind erosion-resistant plant seeds, a third mineralization solution is sprayed for surface cementing to form the low-density Racomitrium canescens grid sand fixation barrier.

[0016] In this embodiment, a stable grid structure is formed through the laying of Racomitrium canescens, which can effectively consolidate the sand surface and reduce wind erosion. At the same time, the water permeability is enhanced to avoid the loosening of the sandy soil due to water accumulation. Secondly, by sowing wind erosion-resistant plant seeds, the formation of vegetation coverage is promoted. The growth of plant roots effectively fixes the sand, reduces the invasion of wind and sand, and provides a basis for subsequent ecological restoration. Finally, the surface cementing layer formed by spraying the third mineralization solution further enhances the stability of the sand surface, playing a role in binding sand grains and preventing wind erosion. Overall, it not only improves the wind prevention and sand fixation effect in desert areas, but also promotes the restoration of the ecological environment and has long-term sustainability, providing an effective solution for desertification control and ecological restoration.

[0017] In one embodiment, based on the average wind speed without the sand barrier and the average wind speed after setting the sand barrier, the wind speed reduction rate is determined, and the target desert ecological governance plan with protection efficacy is screened according to the wind speed reduction rate, including: Determine the difference between the average wind speed without the sand barrier and the average wind speed after setting the sand barrier; According to the ratio of the difference to the average wind speed without the sand barrier, determine the wind speed reduction rate; When the wind speed reduction rate is greater than or equal to a preset reduction threshold, a target desert ecological governance solution with protection efficacy is screened out.

[0018] In this embodiment, by measuring the wind speed reduction rate, the effects of protection measures such as sand barriers are evaluated. Through precise monitoring of wind speed changes, the windproof effect of the desert ecological governance solution can be quantified, providing a scientific basis for wind prevention and sand fixation. On this basis, by analyzing the wind speed reduction rates of different desert ecological governance solutions, those solutions with strong protection efficacy are screened out to achieve the comprehensive treatment of the wind-sand mouth area, taking into account wind prevention and sand fixation, soil improvement, plant restoration, and efficient utilization of water resources, and ensuring the sustainability of ecological restoration.

[0019] In one implementation manner, the composite sand body barrier includes a high-standing stacked sand body biological solidification barrier arranged along the main wind direction; after screening out a target desert ecological governance solution with protection efficacy, the method further includes: Determining the designed height of the high-standing stacked sand body biological solidification barrier corresponding to each target desert ecological governance solution; Sorting all the designed heights from low to high to obtain the minimum designed height; Determining the target desert ecological governance solution corresponding to the minimum designed height as the optimal desert ecological governance solution.

[0020] In this embodiment, the designed height of the high-standing stacked sand body biological solidification barrier corresponding to each target desert ecological governance solution is found. This height is affected by the characteristics of desert wind and sand, plant growth requirements, windproof effect, and technical and economic feasibility. Then, all the designed heights are sorted in ascending order, and finally, the minimum designed height is selected as the optimal desert ecological governance solution. This process ensures that the selected desert ecological governance solution can not only effectively control wind and sand and promote plant growth but also achieve the optimal utilization of resources and costs, ensuring the balance between governance effect and economy. Through this method, the finally determined solution will have the best ecological restoration effect while considering the practical feasibility of construction and maintenance.

[0021] In a second aspect, an embodiment of the present application provides a selection device for a desert ecological governance solution. The device includes: An ecological governance solution construction unit for constructing multiple desert ecological governance solutions, and for each desert ecological governance solution, sequentially setting different types of sand body barriers to form a composite sand body barrier; An average wind speed determination unit without a sand barrier for simulating the wind-sand flow field based on the geographical information of the desert area to determine the average wind speed without a sand barrier; A sand barrier - set - up wind speed determination unit, which is used to simulate the wind - sand flow field in the desert area where the composite sand body barrier is set, and obtain the average wind speed after the sand barrier is set; A target treatment plan determination unit, which is used to determine the wind speed reduction rate based on the average wind speed without the sand barrier and the average wind speed after the sand barrier is set, and screen out the target desert ecological treatment plan with protection effectiveness according to the wind speed reduction rate.

[0022] In a third aspect, an embodiment of the present application provides a computer device, including: A memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the above - mentioned method for selecting a desert ecological treatment plan.

[0023] In a fourth aspect, an embodiment of the present application provides a computer - readable storage medium, on which computer instructions are stored, and the computer instructions are used to cause a computer to execute the above - mentioned method for selecting a desert ecological treatment plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation manners of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific implementation manners or the prior art. Obviously, the following - described drawings are some implementation manners of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a flowchart of a method for selecting a desert ecological treatment plan provided by an embodiment of the present application; Figure 2 It is a flowchart of step S1 provided by an embodiment of the present application; Figure 3 It is a schematic diagram of a composite sand body barrier provided by an embodiment of the present application; Figure 4 It is a flowchart of the setting method of a high - vertical stacked sand body biological solidification barrier provided by an embodiment of the present application; Figure 5 It is a schematic diagram of a high - vertical stacked sand body biological solidification barrier provided by an embodiment of the present application; Figure 6 It is a flowchart of the setting method of a biological mineralized flexible ecological barrier provided by an embodiment of the present application; Figure 7 It is a flowchart of the setting method of a low - density sand moss grid sand - fixing barrier provided by an embodiment of the present application; Figure 8 It is a flowchart of step S7 provided by an embodiment of the present application; Figure 9 This is a flowchart provided by an embodiment of the present application after screening and obtaining a target desert ecological governance solution with protection efficacy; Figure 10 This is a block diagram of a selection device for a desert ecological governance solution provided by an embodiment of the present application; Figure 11 This is a schematic structural diagram of a computer device provided by an embodiment of the present application. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0027] With the intensification of global climate change, the problem of desertification has become increasingly serious, especially in arid and semi-arid regions. As the area where the desert meets other ecosystems (such as grasslands, farmlands, forests, etc.), the sand-dust outlet has become the source of sand-dust storms. The climate in this area is arid, the wind force is strong, and sand-dust storms occur frequently, seriously damaging the surrounding environment and ecological system. The soil at the sand-dust outlet is often eroded by strong winds and sand-dust storms, resulting in poor soil fertility and increased water evaporation, thus affecting the growth of plants and the restoration of biodiversity.

[0028] The problem of soil impoverishment at the sand-dust outlet is particularly prominent. Long-term sand-dust erosion and water shortage have made the soil structure loose, fertility decline, and water resources are scarce, posing a huge challenge to the restoration of the ecological system. Due to the small and uneven precipitation and the low groundwater level, the lack of water sources makes the ecological restoration in these areas more difficult. In addition, human activities such as overgrazing and land reclamation have accelerated the process of desertification, making the ecological environment at the sand-dust outlet deteriorate continuously.

[0029] At present, there are various desert governance methods, mainly including physical, chemical, and biological means. However, these methods are often independent of each other and it is difficult to achieve long-term and stable governance effects in the sand-dust outlet area. For example, relying solely on planting windbreak belts for wind prevention and sand fixation or using a mesh sand fixation structure may achieve certain effects in the short term, but it is difficult to continue to play a role. In addition, existing water resource management measures usually cannot effectively meet the soil and water conservation needs in desert areas, and the phenomenon of water resource waste is relatively serious. Traditional irrigation systems fail to fully consider the reasonable distribution and efficient utilization of water sources, resulting in insufficient water supply and affecting the growth of plants and ecological restoration.

[0030] Therefore, how to select an appropriate desert ecological governance plan to achieve the comprehensive governance of the sandstorm area, taking into account sand prevention and fixation, soil improvement, plant restoration, and efficient utilization of water resources, and ensuring the sustainability of ecological restoration, is a technical problem that needs to be solved urgently.

[0031] To solve the above technical problems, according to the embodiments of the present application, an embodiment of a method for selecting a desert ecological governance plan is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0032] In this embodiment, a method for selecting a desert ecological governance plan is provided. Figure 1 The flowchart of a method for selecting a desert ecological governance plan provided by the embodiments of the present application is shown as Figure 1 shown, and this process includes the following steps: Step S1, construct multiple desert ecological governance plans, and for each desert ecological governance plan, sequentially set different types of sand barriers to form a composite sand barrier.

[0033] Specifically, when constructing multiple desert ecological governance plans, different types of sand barriers are sequentially set for each plan to form a composite sand barrier. This multi-level and diversified sand barrier design can comprehensively utilize the advantages of various types of sand barriers, from reducing the wind energy intensity, fixing the sand surface to promoting vegetation growth, and comprehensively improving the ecological governance effect. Through simulation and optimization, the optimal plan is selected, providing a scientific basis and an efficient means for desert ecological restoration.

[0034] Step S3, perform a sand-drift flow field simulation based on the geographical information of the desert area to determine the average wind speed without sand barriers.

[0035] Specifically, performing a sand-drift flow field simulation based on the geographical information of the desert area is to import data such as the terrain, landform, main wind direction, wind speed distribution, sand grain density, particle size distribution, and surface roughness of the desert area, and use CFD (Computational Fluid Dynamics) software (such as OpenFOAM or ANSYS Fluent) to construct a three-dimensional model and run the simulation, so as to accurately calculate the average wind speed without sand barriers. This process provides key basic data for subsequent sand barrier design and optimization of ecological governance plans, ensuring that the governance measures taken can effectively reduce the wind speed and reduce sand erosion, thereby improving the scientificity and effectiveness of desert ecological governance.

[0036] Step S5, perform a sand-drift flow field simulation on the desert area with a composite sand barrier set to obtain the average wind speed after the sand barrier is set.

[0037] Specifically, for the simulation of the wind-sand flow field in the desert area with the composite sand body barrier set, it is to add the detailed parameters (such as height, spacing, shape, etc.) of the composite sand body barrier corresponding to the desert ecological governance plan into the constructed CFD model, and re-run the simulation to obtain the average wind speed after setting the composite sand body barrier. This process can visually display the blocking effect of the composite sand body barrier on the wind-sand flow. By comparing the average wind speeds before and after setting the sand barrier, the protection efficiency of the composite sand body barrier can be quantitatively evaluated, providing a scientific basis for optimizing the desert ecological governance plan, ensuring that the designed composite sand body barrier can effectively reduce the wind speed and reduce wind-sand erosion, thereby improving the overall effect of ecological restoration.

[0038] Step S7, based on the average wind speed without the sand barrier and the average wind speed after setting the sand barrier, determine the wind speed reduction rate, and screen out the target desert ecological governance plan with protection efficiency according to the wind speed reduction rate.

[0039] Specifically, based on the average wind speed without the sand barrier and the average wind speed after setting the sand barrier, calculate the wind speed reduction rate to quantitatively evaluate the protection efficiency of the sand barrier. Screen out the target desert ecological governance plan with effective protection efficiency according to the preset reduction threshold. This process provides a scientific basis for the selection of the desert ecological governance plan, ensuring that the selected plan can significantly reduce the wind speed and effectively reduce wind-sand erosion, thereby improving the efficiency and reliability of ecological restoration.

[0040] A method for selecting a desert ecological governance plan provided by this embodiment can flexibly select suitable wind and sand prevention measures according to the specific needs of different desert areas by constructing multiple desert ecological governance plans and setting composite sand body barriers. Based on the geographical information of the desert area, conduct a wind-sand flow field simulation, first determine the average wind speed without the sand barrier to provide a reference for subsequent effect evaluation. Then, simulate the wind-sand flow field after setting the composite sand body barrier to obtain the average wind speed after setting the sand barrier. By comparing the wind speeds before and after setting the sand barrier, calculate the wind speed reduction rate, and then screen out the target desert ecological governance plan with good protection efficiency. This process ensures that the governance plan not only has theoretical feasibility but also can actually and effectively reduce the wind speed and improve the desert ecological environment, thereby providing a scientific basis and optimized decision-making for desert ecological governance.

[0041] Figure 2 It is a flowchart of step S1 provided by an embodiment of the present application, and this process can include the following steps: Step S11, set a high-standing stacked sand body biological solidification barrier along the main wind direction.

[0042] Step S13, on the leeward side of the high-standing stacked sand body biological solidification barrier, set a biological mineralized flexible ecological barrier along the main wind direction.

[0043] Step S15: On the leeward side of the biomineralized flexible ecological barrier, a low-density sand moss grid sand fixation barrier is arranged along the main wind direction.

[0044] Specifically, the high-standing stacked sand body biological solidification barrier can effectively reduce the wind energy intensity of the main wind direction, lower the wind speed, and reduce the erosion of the downstream area by wind and sand. A wind and sand deposition zone is formed on the leeward side of the high-standing stacked sand body biological solidification barrier, reducing the movement of wind and sand, and providing a stable wind field environment for the subsequent biomineralized flexible ecological barrier and low-density sand moss grid sand fixation barrier. Please refer to Figure 3 , Figure 3 which is a schematic diagram of the composite sand body barrier provided by the embodiment of the present application. On the leeward side of the high-standing stacked sand body biological solidification barrier, a biomineralized flexible ecological barrier is arranged along the main wind direction, which can further reduce the wind speed and enhance the wind and sand blocking effect. Through the biomineralization technology, the stability and wind erosion resistance of the sand body are enhanced, and the sand surface is fixed. On the leeward side of the biomineralized flexible ecological barrier, a low-density sand moss grid sand fixation barrier is arranged along the main wind direction, further expanding the protection range and covering a wider area. It is applicable to different terrain conditions such as inter-dune areas, the edge areas of wind and sand accumulations, and flat beaches with a small slope. By sequentially arranging the high-standing stacked sand body biological solidification barrier, the biomineralized flexible ecological barrier, and the low-density sand moss grid sand fixation barrier, a multi-level protection system is formed, effectively reducing the wind speed and reducing wind and sand erosion.

[0045] In this embodiment, by setting up the high-standing stacked sand body biological solidification barrier, arranging the biomineralized flexible ecological barrier on its leeward side, and further installing the low-density sand moss grid sand fixation barrier on the leeward side, a multi-level wind and sand fixation system is formed. This combination effectively resists the invasion of wind and sand at different wind speeds and enhances the ecological stability of the desert area. The application of biological solidification and mineralization technologies not only improves the long-term stability of the barrier but also promotes vegetation growth and soil restoration. The flexible design and low-density barrier can flexibly respond to the changes in wind and sand flow, reduce wind and sand erosion, and improve the treatment effect by promoting plant growth and soil consolidation. Overall, through multiple protection measures and scientific management, the ability of desertification prevention and ecological restoration is effectively improved.

[0046] Figure 4 which is a flowchart of the setting method of the high-standing stacked sand body biological solidification barrier provided by the embodiment of the present application. The process may include the following steps: Step S111: Layered filling of sand and soil: In a preset solidification template, the first sand and soil are filled in layers; wherein, the first sand and soil is mixed with an alkali-activated material.

[0047] Specifically, using a trolley or small excavation equipment to fill the first layer of sandy soil in layers can ensure the uniform distribution of the first layer of sandy soil, facilitating subsequent solidification treatment. An alkali activator material is pre-mixed in the first layer of sandy soil. The alkali activator material is fly ash or slag accounting for 5-15% of the mass of the sandy soil, which can undergo chemical reactions with silicates and aluminates in the sandy soil. Fly ash is a by-product generated during coal combustion, containing a large amount of silicates, aluminates and a small amount of calcium components. During the hydration process of fly ash, especially in an alkaline environment, it can react with silicates and aluminates in the sandy soil to form new hydration products (such as calcium silicate hydrate). These hydrates help enhance the cohesion and stability of the soil, thereby improving the soil structure and its resistance to wind and sand erosion and water and soil conservation ability. Slag is a by-product generated during metal production in the metallurgical industry, mainly composed of silicates, aluminates and ferrites. Slag can also react with silicates and aluminates in the soil. Especially in the presence of moisture, the calcium components in the slag will promote the hydration reaction of the soil, generating similar calcium silicate hydrates and aluminum silicate hydrates, improving the stability of the soil. The dosage of 5-15% can not only ensure the full progress of the reaction, but also avoid the increase in cost and construction difficulty caused by excessive dosage.

[0048] In one embodiment, the cross-sectional shape of the curing formwork is a trapezoidal structure; the angle of the formwork side wall corresponding to the trapezoidal structure is 30-45°, the height of the formwork is 0.5-2 m, the width of the bottom of the formwork is 1-4 m, and the width of the top of the formwork is 0.2-1 m.

[0049] The trapezoidal structure can provide good stability because the bottom is wide and the top is narrow, and the sandy body is more evenly stressed in the natural state and is not easy to slide or tilt. Secondly, the angle of 30-45° can not only ensure the stability of the sandy body, but also reduce the material consumption and facilitate construction at the same time. It should be noted that the curing formwork is arranged in the direction perpendicular to the main wind direction after the filling of the first layer of sandy soil is completed. This arrangement method can maximize the reduction of the wind energy intensity of the main wind direction, form an effective wind and sand barrier zone, and reduce the erosion of the downstream area by wind and sand.

[0050] Step S113, spraying the activator: After each layer of the first sandy soil is filled, spray the activator solution.

[0051] Specifically, after each layer of the first sandy soil is filled, an activator solution is immediately sprayed. Ensure that during the process of filling the first sandy soil in layers, each layer can be subjected to chemical solidification treatment in a timely manner to avoid the drying of the sandy soil or the instability of the structure due to excessive time. The activator solution is selected from at least one of a sodium hydroxide solution with a concentration of 1 - 6 mol / L or sodium silicate. Sodium hydroxide is a strong base that can chemically react with silicates and aluminates in the sandy soil to form hydrated products with cementing properties (such as C-A-S-H cementing structure). This structure can significantly improve the strength and stability of the sand body. Sodium silicate is a silicate solution with good cementing properties. It can form a network-like silicate structure in the sandy soil, further enhancing the strength and durability of the sand body.

[0052] Step S115, standing and mineralization reinforcement: After completing the filling of the first sandy soil and spraying the activator solution, a standing treatment is carried out; after standing, a first mineralization solution is sprayed for reinforcement to form a high-standing stacking unit.

[0053] Specifically, after completing the filling of the first sandy soil and spraying the activator solution, a standing treatment is carried out for 1 - 2 days to allow the chemical reactions inside the sand body to proceed fully and form a stable structure. Prepare the first mineralization solution, which is prepared by mixing urease with an activity of 5 - 20 mmol / (L·min) and a calcium salt / urea cementing solution with a concentration of 1 - 4 mol / L in a volume ratio of 1:1. Spray from the top of the curing template into the sand body for reinforcement to form a high-standing stacking unit. The first mineralization solution can form calcium carbonate precipitation inside the sand body, further enhancing the strength and stability of the sand body.

[0054] The total spraying amount of the first mineralization solution is calculated as follows: n = 1 - (ρ / ρ s ), where n is the porosity of the sand body; ρ is the dry density of the sand body (kg / m 3 ); ρ s is the specific gravity of the sand (taking 2650 kg / m 3 ). Calculate the void volume V p = V0×n according to the volume V0 of the current first sandy soil in the curing template, and then calculate the total spraying amount of the first mineralization solution = V p ×Φ according to the filling rate Φ = 30 - 70% to ensure that the first mineralization solution penetrates sufficiently, is unsaturated, and does not drain. The overall usage amount of the activator solution and the first mineralization solution here can be controlled in a volume ratio of 10:1 - 3:1. After the curing reaction is completed, remove the curing template to form a high-standing stacking unit with a dense structure and geometric stability.

[0055] Step S117, arranging stacking units: Arrange the high vertical stacking units into column groups according to the first adjacent preset spacing, and arrange each column group into row groups according to the second adjacent preset spacing, forming a high vertical stacking sand body biological curing barrier composed of column groups and row groups.

[0056] Specifically, the high vertical stacking units are first arranged into column groups according to the first adjacent preset spacing. Please refer to Figure 5 , Figure 5 which is a schematic diagram of the high vertical stacking sand body biological curing barrier provided by the embodiment of the present application. The first adjacent preset spacing refers to the bottom width distance between the high vertical stacking units. That is to say, when the high vertical stacking units are vertically arranged as shown in Figure 5 , there are fixed gaps between these units. This spacing determines the relative positions of each unit in the column group. When forming the column group, a consistent interval is maintained between each high vertical stacking unit. This can effectively avoid excessive overlap or close contact between the high vertical stacking units, thus providing space for the flow of wind and sand. Next, staggered arrangement is carried out between the column groups. Specifically, the column groups are arranged in an interleaved manner at the gaps of the first group, thus forming a staggered arrangement. In this way, the columns in each group are no longer simply aligned, but the complexity of the structure is increased through the staggered method. The advantage of the staggered arrangement is that it can effectively increase the path of wind and sand flow inside the sand body, further reducing the wind speed. This layout can create a more complex air flow route, so that the wind and sand are not easily directly passed through the barrier, thus improving the wind and sand blocking effect of the barrier. As the column groups and row groups continue to be arranged, the entire high vertical stacking units gradually form a staggered grid-like structure, that is, the final high vertical stacking sand body biological curing barrier. This structure further increases the interference and dispersion of the wind and sand flow, helping to enhance the stability and function of the overall barrier. The grid structure can effectively disperse the force of the wind and sand, making the windproof and sand-resistant effect of the entire barrier more significant.

[0057] The second adjacent preset spacing L refers to the spacing between each column group after the column groups are arranged. The setting formula for this spacing is: L = k × H, where: k is an empirical coefficient, usually with a value range of 3 to 6. H is the design height of the high vertical stacking sand body biological curing barrier, usually referring to the design height of a single high vertical stacking unit. Here, H can be equal to or less than the formwork height of the curing formwork, usually 0.5 - 2 meters, representing the total filling height of the first sandy soil. Through the formula L = k × H, the spacing L between the column groups can be obtained. The size of this spacing determines the density of the entire structure. The selection of the empirical coefficient k affects the overall layout and performance of the barrier. If the coefficient is too small, it may cause the column groups to be too dense, affecting the flow of wind and sand; if the coefficient is too large, the sealing effect of the barrier may be weakened, resulting in an unsatisfactory windproof and sand-resistant effect.

[0058] In this embodiment, by layering and filling sand and soil and incorporating an alkali-activated material, the stability and strength of the sand and soil are effectively improved, ensuring that each layer of sand and soil is fully compacted and reinforced. Spraying the activator can initiate the chemical reaction between the sand and soil and the alkali-activated material, further enhancing the solidification effect. The static treatment provides sufficient time for the mineralization reaction, improving the durability of the sand and soil and ensuring the firmness and stability of the structure. Finally, by reasonably arranging the high-vertical stacking units, a barrier with an optimized structure is formed. This arrangement not only improves the wind and sand resistance ability but also ensures stability during long-term use. Overall, it effectively enhances the wind and sand resistance effect of the sand body, extends the service life, and improves the integrity and stability of the structure.

[0059] Figure 6 The flowchart shows the setting method of the bio-mineralized flexible ecological barrier provided by the embodiment of the present application. The process may include the following steps: Step S131, filling sand and soil: Fill the second sand and soil into the isosceles triangle template.

[0060] Specifically, the bottom width of the isosceles triangle template is 10 - 30 cm, and the height is controlled according to the natural stacking angle of 30 - 45°. This structure can provide good stability and prevent the sand body from collapsing before solidification.

[0061] Step S133, primary mineralization reinforcement: After filling the second sand and soil, spray the second mineralization solution for reinforcement to form a sand barrier unit. Among them, the second mineralization solution contains a biological macromolecule material. The biological macromolecule material is selected from at least one of polyurethane, xanthan gum, Artemisia sphaerocephala gum, or arabic gum with a mass percentage of 0.5 - 2%.

[0062] Specifically, after filling the second sand and soil, remove the isosceles triangle template and use a spraying device to spray the outer surface of the second sand and soil to ensure that the second mineralization solution can evenly cover the surface to form a sand barrier unit. Prepare the second mineralization solution, which is prepared by mixing urease with an activity of 5 - 20 mmol / (L·min) and a calcium salt / urea cementing solution with a concentration of 1 - 4 mol / L in a volume ratio of 1:1. The second mineralization solution also contains at least one of polyurethane, xanthan gum, Artemisia sphaerocephala gum, or arabic gum with a mass percentage of 0.5 - 2%. The main purpose is to enhance flexibility and cementing stability. The biological macromolecule material can improve the bonding force of the sand body, thereby slowing down the fluidity of the second sand and soil during the solidification process and increasing the stability of the second sand and soil structure. The primary mineralization reinforcement lasts for 1 - 2 days to improve the survival rate of subsequent seeds.

[0063] The total spraying amount of the second mineralization solution is calculated as follows: n = 1 - (ρ / ρ s ), where n is the porosity of the sand body; ρ is the dry density of the sand body (kg / m 3 ); ρ sis the specific gravity of sand (take 2650 kg / m 3 ). Calculate the void volume V according to the volume V1 of the current second sandy soil in the isosceles triangle template q = V1×n. Then, calculate the total spraying amount of the second mineralized solution according to the filling rate Φ = 30 - 70% = V q ×Φ, ensuring that the second mineralized solution penetrates sufficiently, is unsaturated, and does not drain.

[0064] Step S135, arranging sand barrier units: Arrange the sand barrier units in a square manner to form a sand fixation matrix unit.

[0065] Specifically, starting from 5 - 15 meters on the leeward side of the high - vertical stacked sand body biological solidification barrier, arrange the sand barrier units in a square manner, with the side length of the square controlled at 1 - 2 m. This arrangement enables the entire sand fixation matrix unit to better disperse the wind force and improve the wind - sand blocking effect.

[0066] Step S137, sowing seeds: Sow wind - erosion - resistant plant seeds on the second sandy soil within the sand fixation matrix unit; among them, the wind - erosion - resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum, or Artemisia arenaria.

[0067] Specifically, sow seeds with strong wind - erosion - resistant ability that can survive and grow in the harsh desert environment, at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum, or Artemisia arenaria. The seeding rate is 0.2 - 3 kg / mu, ensuring sufficient vegetation cover in the second sandy soil within the sand fixation matrix unit to reduce wind - sand erosion. Specifically, use a rake or manual disturbance tool to bury the seeds to a depth of 0.5 - 2 cm in the sand layer.

[0068] Step S139, secondary mineralization reinforcement: After sowing the wind - erosion - resistant plant seeds, spray a low - concentration mineralized solution for secondary reinforcement to form a bio - mineralized flexible ecological barrier.

[0069] Specifically, after sowing the wind - erosion - resistant plant seeds, spray a low - concentration mineralized solution to further enhance the wind - erosion - resistant ability and stability of the sand barrier, provide a suitable consolidation and rooting environment for the plant seeds, and promote the germination and growth of the seeds. Configure a low - concentration mineralized solution, which is prepared by mixing urease with an activity of 5 - 10 mmol / (L·min) and a calcium salt / urea cementing solution with a concentration of 0.05 - 0.5 mol / L in a volume ratio of 1:1. The spraying amount is controlled at 1 - 5 L / m².

[0070] In this embodiment, by spraying the second mineralization solution (including urease and calcium salt / urea cementing solution, as well as the biopolymer material incorporated in the second mineralization solution), the adhesiveness and structural strength of the sandy soil are enhanced, and the loosening and loss of the sandy soil are prevented. Then, the reinforced sand barrier units are arranged in a square to form a stable sand fixation matrix unit, which effectively disperses the wind force and enhances the overall wind prevention and sand fixation effect. Subsequently, wind erosion-resistant plant seeds are sown in the sand fixation matrix unit. These plants further hold the sandy soil in place and improve the soil structure through the deepening of their roots and the growth of their above-ground parts. Finally, secondary mineralization reinforcement is carried out to form a bio-mineralized flexible ecological barrier, which further improves the stability of the sandy soil and promotes plant growth, providing a more stable growth environment for them. This comprehensive technical solution combines physical and biological means to successfully achieve the dual goals of wind prevention and sand fixation and ecological restoration, effectively addressing the problems of wind and sand erosion and desertification.

[0071] Figure 7 The flowchart of the setting method of the low-density Racomitrium canescens grid sand fixation barrier provided by the embodiment of the present application may include the following steps: Step S151, Racomitrium canescens laying: Racomitrium canescens is used to form a square pattern for laying to form a grid unit.

[0072] Specifically, a square grid pattern is adopted to form a grid unit in a square format. Each side length of the grid unit is 1 - 2 meters, ensuring that a single grid unit is large enough to accommodate the ecological cloth belt and leave a certain space between the grids to facilitate the growth of plant seeds. The material of the cloth belt is a flexible and permeable ecological cloth belt that can adhere to Racomitrium canescens. The width of the cloth belt is 0.05 - 0.3 meters, which plays a role in fixing Racomitrium canescens and promoting the growth of vegetation. The grid units formed by these cloth belts can effectively restrict the flow of wind and sand, prevent the expansion of sand dunes, and reduce the erosion of the sand body. Through the laying of this cloth belt and the adhesion of Racomitrium canescens, not only can the erosion of wind and sand be prevented, but also the movement of the sand body can be reduced, improving the overall wind prevention and sand fixation effect. Racomitrium canescens itself has water permeability, which can effectively reduce the accumulation of rainwater on the sand surface, prevent the sand body from being soaked, and avoid the loosening of the sand body caused by excessive water accumulation. Through water permeability, water can penetrate into the ground, improving the permeability of the sand body and thus increasing the stability of the soil. An exposed sand surface area is reserved in the center of each grid unit, which provides a soil foundation for subsequent plant sowing, enabling plants to take root and grow.

[0073] Step S153, seed sowing: Wind erosion-resistant plant seeds are sown in the grid unit; among them, the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippohgae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum, or Artemisia desertorum.

[0074] Specifically, sow at least one of the seeds with strong wind erosion resistance that can survive and grow in the harsh desert environment, such as Elaeagnus angustifolia, Hippohgae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia arenaria, with a seeding rate of 0.2 - 3 kg / mu, to ensure sufficient vegetation coverage within the grid unit and reduce wind and sand erosion. Specifically, use a rake or manual disturbance tool to bury the seeds to a depth of 0.5 - 2 cm in the sand layer.

[0075] Step S155, surface cementation: After sowing the wind erosion-resistant plant seeds, spray the third mineralization solution for surface cementation to form a low-density sand moss grid sand fixation barrier.

[0076] Specifically, after sowing the wind erosion-resistant plant seeds, use a spraying device to spray the third mineralization solution on the exposed sand surface. By spraying the third mineralization solution, the adhesion between surface sand grains is enhanced, and the wind erosion resistance of the sand surface is improved. And ensure the stable position of the seeds in the sand surface, prevent them from being blown away by wind and sand, and promote early rooting. Configure the third mineralization solution, which is prepared by mixing urease with an activity of 5 - 10 mmol / (L·min) and a calcium salt / urea cementation solution with a concentration of 0.05 - 0.5 mol / L in a volume ratio of 1:1, and the spraying amount is controlled at 1 - 5 L / m². Urease can catalyze the hydrolysis of urea to generate ammonia and carbon dioxide, further promoting the precipitation of calcium carbonate and enhancing the strength and stability of the sand body. After the surface cementation treatment is completed, the formed low-density sand moss grid sand fixation barrier can exist in the desert environment for a long time. The distribution range of this barrier is usually at the end of the bio-mineralized flexible ecological barrier or 5 - 50 meters extended on both sides.

[0077] In this embodiment, a stable grid structure is formed through the laying of sand moss, which can effectively consolidate the sand surface and reduce wind erosion, while enhancing the water permeability and avoiding the loosening of sandy soil due to water accumulation. Secondly, by sowing wind erosion-resistant plant seeds, the formation of vegetation coverage is promoted, and the growth of plant roots effectively fixes the sand, reduces the invasion of wind and sand, and provides a basis for subsequent ecological restoration. Finally, the surface cementation layer formed by spraying the third mineralization solution further enhances the stability of the sand surface, playing a role in binding sand grains and preventing wind erosion. Generally speaking, it not only improves the wind prevention and sand fixation effect in desert areas, but also promotes the restoration of the ecological environment and has long-term sustainability, providing an effective solution for desertification control and ecological restoration.

[0078] Figure 8 It is a flowchart of step S7 provided by the embodiment of the present application, and this process may include the following steps: Step S71, determine the difference between the average wind speed without sand barriers and the average wind speed after setting sand barriers.

[0079] Step S73, determine the wind speed reduction rate according to the ratio of the difference to the average wind speed without sand barriers.

[0080] Step S75: When the wind speed reduction rate is greater than or equal to a preset reduction threshold, screen out the target desert ecological governance solutions with protection effectiveness.

[0081] Specifically, the average wind speed without sand barriers represents the original wind speed when setting sand barriers, and the average wind speed after setting sand barriers represents the wind speed after setting sand barriers. The difference between the two reflects the wind speed reduction effect of the sand barriers. Calculate the wind speed reduction rate η through the formula v =[(V h0 -V h ) / V h0 ×100%; where V h0 is the average wind speed without sand barriers (unit: m / s); V h is the average wind speed after setting sand barriers (unit: m / s). It can quantify the strength of the protection effect of the sand barriers corresponding to the desert ecological governance solutions. A higher wind speed reduction rate means that the sand barriers have a stronger protection effectiveness in reducing the wind speed.

[0082] When the wind speed reduction rate η v is greater than or equal to the preset reduction threshold (such as 40%), determine that the desert ecological governance solution corresponding to this wind speed reduction rate has protection effectiveness. Therefore, by setting the preset reduction threshold, screen out the target desert ecological governance solutions that can effectively reduce the wind speed and have protection effectiveness.

[0083] In this embodiment, the effects of protection measures such as sand barriers are evaluated by measuring the wind speed reduction rate. Through precise monitoring of wind speed changes, the wind protection effect of the desert ecological governance solutions can be quantified, providing a scientific basis for wind prevention and sand fixation. On this basis, by analyzing the wind speed reduction rates of different desert ecological governance solutions, screen out those solutions with stronger protection effectiveness to achieve the comprehensive management of the sandstorm-prone areas, taking into account wind prevention and sand fixation, soil improvement, plant restoration, and efficient utilization of water resources, and ensuring the sustainability of ecological restoration.

[0084] Figure 9 The following is a flowchart after screening out the target desert ecological governance solutions with protection effectiveness provided by the embodiment of the present application. The composite sand body barrier includes a high-standing stacked sand body biological solidification barrier arranged along the main wind direction. This process may include the following steps: Step S91: Determine the design height of the high-standing stacked sand body biological solidification barrier corresponding to each target desert ecological governance solution.

[0085] Step S93: Sort all the design heights from low to high to obtain the minimum design height.

[0086] Step S95: Determine the target desert ecological governance plan corresponding to the minimum design height as the optimal desert ecological governance plan.

[0087] Specifically, by determining the design height of the high vertical stacked sand body biological solidification barrier corresponding to each target desert ecological governance plan, basic data is provided for subsequent sorting and selection. Since the design height of the high vertical stacked sand body biological solidification barrier is 0.5 - 2 meters, that is, the height of the solidification template, the corresponding specific design height can be found through the determined target desert ecological governance plan. By sorting the found design heights, the plan with the minimum design height can be quickly found, providing a basis for selecting the optimal desert ecological governance plan. Select the plan with the minimum design height as the optimal desert ecological governance plan to ensure the economy and practicality of the sand body barrier.

[0088] In this embodiment, the design height of the high vertical stacked sand body biological solidification barrier corresponding to each target desert ecological governance plan is found. This height is affected by the characteristics of desert wind and sand, plant growth requirements, wind prevention effect, and technical and economic feasibility. Then, all the design heights are sorted in ascending order, and finally, the minimum design height is selected as the optimal desert ecological governance plan. This process ensures that the selected desert ecological governance plan can not only effectively control wind and sand and promote plant growth but also achieve the optimal utilization of resources and costs, ensuring the balance between governance effect and economy. Through this method, the finally determined plan will have the best ecological restoration effect while considering the practical feasibility of construction and maintenance.

[0089] Correspondingly, please refer to Figure 10 The block diagram of a device for selecting a desert ecological governance plan provided by an embodiment of the present application. The device includes: An ecological governance plan construction unit 101, configured to construct multiple desert ecological governance plans, and for each desert ecological governance plan, sequentially set different types of sand body barriers to form a composite sand body barrier; An average wind speed determination unit 103 without sand barriers, configured to perform a wind-sand flow field simulation based on the geographical information of the desert area to determine the average wind speed without sand barriers; An average wind speed determination unit 105 after setting sand barriers, configured to perform a wind-sand flow field simulation on the desert area where the composite sand body barrier is set to obtain the average wind speed after setting sand barriers; A target governance plan determination unit 107, configured to determine the wind speed reduction rate based on the average wind speed without sand barriers and the average wind speed after setting sand barriers, and screen out the target desert ecological governance plans with protection effectiveness according to the wind speed reduction rate.

[0090] In some alternative embodiments, the ecological governance plan construction unit 101 includes: Set a high vertical stacked sand body biological solidification barrier along the main wind direction; On the leeward side of the high vertical stacked sand body biological solidification barrier, a bio-mineralized flexible ecological barrier is arranged along the main wind direction; On the leeward side of the bio-mineralized flexible ecological barrier, a low-density sand moss grid sand fixation barrier is arranged along the main wind direction.

[0091] In some alternative embodiments, the high vertical stacked sand body biological solidification barrier is arranged as follows: Layering and filling with sandy soil: In a preset solidification template, layer by layer fill in the first sandy soil; wherein, the first sandy soil is mixed with an alkali activator material; Spraying the activator: After each layer of the first sandy soil is filled, spray the activator solution; Static setting and mineralization reinforcement: After completing the filling of the first sandy soil and spraying the activator solution, perform static setting treatment; after static setting, spray the first mineralization solution for reinforcement to form a high vertical stacked unit; Arranging the stacked units: Arrange the high vertical stacked units into column groups according to a first adjacent preset spacing, and arrange each column group into row groups according to a second adjacent preset spacing to form a high vertical stacked sand body biological solidification barrier composed of column groups and row groups.

[0092] In some alternative embodiments, the cross-sectional shape of the solidification template is a trapezoidal structure; the template side wall angle corresponding to the trapezoidal structure is 30 - 45°, the template height is 0.5 - 2 m, the template bottom width is 1 - 4 m, and the template top width is 0.2 - 1 m; The activator solution is selected from at least one of a sodium hydroxide solution with a concentration of 1 - 6 mol / L or sodium silicate.

[0093] In some alternative embodiments, the bio-mineralized flexible ecological barrier is arranged as follows: Filling with sandy soil: Fill the second sandy soil in an isosceles triangle template; Primary mineralization reinforcement: After completing the filling of the second sandy soil, spray the second mineralization solution for reinforcement to form a sand barrier unit; wherein, the second mineralization solution is mixed with a biological polymer material; the biological polymer material is selected from at least one of polyurethane, xanthan gum, Artemisia sphaerocephala gum or arabic gum with a mass percentage of 0.5 - 2%; Arranging the sand barrier units: Arrange the sand barrier units in a square manner to form a sand fixation matrix unit; Sowing seeds: Sow wind erosion-resistant plant seeds on the second sandy soil in the sand fixation matrix unit; wherein, the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippohgae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia desertorum; Secondary mineralization reinforcement: After completing the sowing of the wind erosion-resistant plant seeds, spray a low-concentration mineralization solution for secondary reinforcement to form a bio-mineralized flexible ecological barrier.

[0094] In some alternative embodiments, the low-density sand moss grid sand fixation barrier is set as follows: Sand moss laying: Use sand moss to form a square pattern for laying to form grid units; Seeding: Sow anti-wind erosion plant seeds in the grid units; among them, the anti-wind erosion plant seeds are selected from at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia desertorum; Surface cementation: After sowing the anti-wind erosion plant seeds, spray the third mineralization solution for surface cementation to form a low-density sand moss grid sand fixation barrier.

[0095] In some alternative embodiments, the target treatment plan determination unit 107 includes: Determine the difference between the average wind speed without sand barriers and the average wind speed after sand barriers are set; Determine the wind speed reduction rate according to the ratio of the difference to the average wind speed without sand barriers; In the case where the wind speed reduction rate is greater than or equal to the preset reduction threshold, screen and obtain the target desert ecological treatment plan with protection effectiveness.

[0096] In some alternative embodiments, the composite sand body barrier includes a high-standing stacked sand body biological solidification barrier arranged along the main wind direction; after screening and obtaining the target desert ecological treatment plan with protection effectiveness, the device further includes: Determine the design height of the high-standing stacked sand body biological solidification barrier corresponding to each target desert ecological treatment plan; Sort all the design heights from low to high to obtain the minimum design height; Determine the target desert ecological treatment plan corresponding to the minimum design height as the best desert ecological treatment plan.

[0097] The further function descriptions of the above-mentioned various modules and units are the same as those in the corresponding embodiments above, and will not be repeated here.

[0098] The selection device for a desert ecological treatment plan in this embodiment is presented in the form of functional units. Here, the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0099] Please refer to Figure 11 , Figure 11 which is a schematic structural diagram of a computer device provided by an embodiment of the present application, as shown in Figure 11As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting the components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some alternative embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (such as an array of servers, a set of blade servers, or a multi-processor system). Figure 11 In the figure, a processor 10 is taken as an example.

[0100] The processor 10 can be a central processing unit, a network processor, or a combination thereof. Among them, the processor 10 can further include a hardware chip. The above hardware chip can be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The above programmable logic device can be a complex programmable logic device, a field programmable gate array, a general array logic, or any combination thereof.

[0101] Among them, the memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiments.

[0102] The memory 20 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the computer device. In addition, the memory 20 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 can optionally include a memory remotely set relative to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0103] The memory 20 can include a volatile memory, such as a random access memory; the memory can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid-state drive; the memory 20 can also include a combination of the above types of memories.

[0104] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0105] The embodiments of the present application also provide a computer-readable storage medium. The methods according to the embodiments of the present application can be implemented in hardware, firmware, or be implemented as computer code that can be recorded on a storage medium, or be implemented as computer code that is originally stored in a remote storage medium or a non-transitory machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the methods described herein can be stored as such software processes on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, the processor, or the hardware, the methods shown in the above embodiments are implemented.

[0106] The devices and units illustrated in the above embodiments can be specifically implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0107] For the convenience of description, when describing the above devices, they are described separately as various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0108] Those skilled in the art should understand that the embodiments of the present application can be provided as methods and devices. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code.

[0109] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices, and apparatuses according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a dedicated computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate for implementing the processesFigure 1 one process or multiple processes and / or blocks Figure 1 a device for the functions specified in one block or multiple blocks.

[0110] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device that implements the functions in the process Figure 1 one process or multiple processes and / or blocks Figure 1 specified in one block or multiple blocks.

[0111] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in the process Figure 1 one process or multiple processes and / or blocks Figure 1 specified in one block or multiple blocks.

[0112] It should also be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, commodity or device including the said element.

[0113] Each embodiment in this specification is described in a progressive manner. For parts that are the same or similar among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and reference can be made to the relevant parts of the method embodiments for the relevant content.

[0114] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

[0115] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A method for selecting a desert ecological governance plan, characterized in that, The selection method includes: Construct multiple desert ecological management solutions. For each desert ecological management solution, sequentially set different types of sand barriers to form a composite sand barrier; Based on the geographical information of the desert area, simulate the wind-sand flow field to determine the average wind speed without sand barriers; Simulate the wind-sand flow field of the desert area where the composite sand barrier is set to obtain the average wind speed after the sand barrier is set; Based on the average wind speed without the sand barrier and the average wind speed after the sand barrier is set, determine the wind speed reduction rate, and select the target desert ecological management solution with protection efficacy according to the wind speed reduction rate.

2. The selection method according to claim 1, wherein The sequential setting of different types of sand barriers to form a composite sand barrier includes: Set a high-standing stacked sand body bio-solidification barrier along the main wind direction; On the leeward side of the high-standing stacked sand body bio-solidification barrier, set a bio-mineralized flexible ecological barrier along the main wind direction; On the leeward side of the bio-mineralized flexible ecological barrier, set a low-density sand moss grid sand fixation barrier along the main wind direction.

3. The selection method according to claim 2, characterized in that, The setting method of the high-standing stacked sand body bio-solidification barrier is as follows: Lay sandy soil in layers: In a preset solidification template, lay the first sandy soil in layers; wherein, the first sandy soil is mixed with an alkali-activated material; Spray the activator: After each layer of the first sandy soil is laid, spray the activator solution; Stand and mineralize for reinforcement: After the filling of the first sandy soil is completed and the activator solution is sprayed, perform a standing treatment; after standing, spray the first mineralization solution for reinforcement to form a high-standing stacked unit; Arrange the stacked units: Arrange the high-standing stacked units into column groups according to the first adjacent preset spacing, and arrange each column group into row groups according to the second adjacent preset spacing to form the high-standing stacked sand body bio-solidification barrier composed of the column groups and the row groups.

4. The selection method according to claim 3, characterized in that, The cross-sectional shape of the solidification template is a trapezoidal structure; the template side wall angle corresponding to the trapezoidal structure is 30-45°, the template height is 0.5-2m, the template bottom width is 1-4m, and the template top width is 0.2-1m; The activator solution is selected from at least one of a sodium hydroxide solution with a concentration of 1-6mol / L or water glass.

5. The selection method according to claim 2, characterized in that, The setting method of the bio-mineralized flexible ecological barrier is as follows: Fill with sandy soil: Fill the second sandy soil in an isosceles triangle template; Mineralize and reinforce for the first time: After the filling of the second sandy soil is completed, spray the second mineralization solution for reinforcement to form a sand barrier unit; wherein, the second mineralization solution is mixed with a biological macromolecule material; the biological macromolecule material is selected from at least one of polyurethane, xanthan gum, Artemisia sphaerocephala gum or arabic gum with a mass percentage of 0.5-2%; Arrange the sand barrier units: Arrange the sand barrier units in a square manner to form a sand fixation matrix unit; Sow seeds: Sow wind erosion-resistant plant seeds on the second sandy soil in the sand fixation matrix unit; wherein, the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia sphaerocephala; Mineralize and reinforce for the second time: After sowing the wind erosion-resistant plant seeds, spray a low-concentration mineralization solution for secondary reinforcement to form the bio-mineralized flexible ecological barrier.

6. The selection method according to claim 2, characterized in that, The setting method of the low-density sand moss grid sand fixation barrier is as follows: Sand moss laying: Use sand moss to form a square pattern for laying to form grid units; Seeding: Sow wind erosion-resistant plant seeds in the grid units; wherein, the wind erosion-resistant plant seeds are selected from at least one of Elaeagnus angustifolia, Hippophae rhamnoides, Haloxylon ammodendron, Hedysarum scoparium, Astragalus adsurgens, Agriophyllum squarrosum or Artemisia arenaria; Surface cementation: After sowing the wind erosion-resistant plant seeds, spray a third mineralization solution for surface cementation to form the low-density sand moss grid sand fixation barrier.

7. The selection method according to claim 1, wherein Based on the average wind speed without the sand barrier and the average wind speed after setting the sand barrier, determine the wind speed reduction rate, and screen out the target desert ecological management plan with protection efficacy according to the wind speed reduction rate, including: Determine the difference between the average wind speed without the sand barrier and the average wind speed after setting the sand barrier; Determine the wind speed reduction rate according to the ratio of the difference to the average wind speed without the sand barrier; When the wind speed reduction rate is greater than or equal to the preset reduction threshold, screen out the target desert ecological management plan with protection efficacy.

8. The selection method according to claim 1 or 7, characterized in that The composite sand body barrier includes a high vertical stacked sand body biological solidification barrier arranged along the main wind direction; After screening out the target desert ecological management plan with protection efficacy, the method further includes: Determine the design height of the high vertical stacked sand body biological solidification barrier corresponding to each target desert ecological management plan; Sort all the design heights from low to high to obtain the minimum design height; Determine the target desert ecological management plan corresponding to the minimum design height as the best desert ecological management plan.

9. An apparatus for selecting a desert ecological governance plan, characterized in that, The device includes: An ecological management plan construction unit for constructing multiple desert ecological management plans. For each desert ecological management plan, different types of sand body barriers are sequentially set to form a composite sand body barrier; An average wind speed determination unit without a sand barrier for simulating the wind-sand flow field based on the geographical information of the desert area to determine the average wind speed without a sand barrier; An average wind speed determination unit after setting the sand barrier for simulating the wind-sand flow field of the desert area where the composite sand body barrier is set to obtain the average wind speed after setting the sand barrier; A target management plan determination unit for determining the wind speed reduction rate based on the average wind speed without the sand barrier and the average wind speed after setting the sand barrier, and screening out the target desert ecological management plan with protection efficacy according to the wind speed reduction rate.

10. A computer device, characterized in that, Including: A memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the selection method of the desert ecological management plan according to any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that, Computer instructions are stored on the computer-readable storage medium, and the computer instructions are used to cause the computer to execute the selection method of the desert ecological management plan according to any one of claims 1 to 8.

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