Desert control method combining photovoltaic, mechanical sand stabilization and phytoremediation

Abstract

The invention provides a photovoltaic, mechanical sand stabilization and phytoremediation cooperative desertification control method, and relates to the technical field of desertification control, a photovoltaic array of a photovoltaic field area and a mechanical sand barrier corresponding to the photovoltaic array are constructed, and after a target time length is set for the mechanical sand barrier, the target time length is set for the mechanical sand barrier; the method comprises the steps of obtaining a plurality of varieties of plants in a photovoltaic field area, evaluating planting data of the plurality of varieties of plants in the photovoltaic field area, determining optimal varieties corresponding to various types of photovoltaic panels in a photovoltaic array, and planning vegetation distribution of the photovoltaic field area based on the optimal varieties corresponding to the various types of photovoltaic panels so as to obtain planting varieties suitable for the environment of the photovoltaic field area. And monitoring and acquiring the plant, soil and atmospheric state data of the photovoltaic field based on a monitoring feedback system arranged in the photovoltaic field. Therefore, the steps of photovoltaic desertification control are standardized, the preferable variety is determined, the survival and growth quality of plants is improved, the ecological, economic and social benefits are improved, and sustainable development of cooperation of clean energy development and ecological restoration is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of desert management, and particularly relates to a photovoltaic, mechanical sand fixation and plant remediation synergistic desert management method. BACKGROUND

[0002] Desertification causes sharp reduction of biodiversity, and also causes loss of soil fertility and weakening of climate regulation ability due to wind erosion and vegetation reduction, affecting sustainable development of ecology.

[0003] At present, due to flat terrain, strong solar radiation and long sunshine hours in desert and gobi desert areas, wind sand control is combined with photovoltaic power stations to obtain better production efficiency. However, how to take reasonable prevention and control measures to prevent and control desertification and improve the ecological environment is still a technical problem to be solved. SUMMARY

[0004] Therefore, the present application provides a photovoltaic, mechanical sand fixation and plant remediation synergistic desert management method, which aims to combine photovoltaic and take reasonable prevention and control measures to prevent and control desertification and improve the ecological environment.

[0005] In a first aspect, the present application provides a photovoltaic, mechanical sand fixation and plant remediation synergistic desert management method, which comprises:

[0006] constructing a photovoltaic array of a photovoltaic field area and a mechanical sand barrier corresponding to the photovoltaic array;

[0007] after setting a target time length of the mechanical sand barrier, setting an irrigation system according to soil water content, evaluating planting data of multiple species of plants in the photovoltaic field area, and determining preferred species corresponding to each type of photovoltaic panel in the photovoltaic array, wherein the planting data includes growth data, soil data and ecological benefits;

[0008] based on the preferred species corresponding to each type of photovoltaic panel, planning vegetation distribution of the photovoltaic field area;

[0009] based on a monitoring feedback system arranged in the photovoltaic field area, monitoring and obtaining plant, soil and atmospheric state data of the photovoltaic field area.

[0010] Optionally, the evaluating the planting data of the multiple species of plants in the photovoltaic field area and determining the preferred species corresponding to each type of photovoltaic panel in the photovoltaic array comprises:

[0011] arranging each type of photovoltaic panel with multiple species of plants corresponding to the type, and each species of plant is arranged in the photovoltaic panel area and a first control area, wherein the first control area is an area without photovoltaic panel arrangement;

[0012] Determine growth data and leaf water data of each plant variety, and determine corresponding soil data and ecological benefits of each plant variety, to determine the preferred plant variety corresponding to the type of photovoltaic panel.

[0013] Optionally, the determination of the growth data of each plant variety comprises:

[0014] Determine the survival rate, plant height, crown width, base diameter, plant net photosynthetic rate, and biomass of the plant variety during the experimental test duration as the growth data of the plant variety.

[0015] Determine the leaf water data of each plant variety, comprising:

[0016] During the growth season of the plant variety, obtain plant leaves of each plant variety at the same time point, and determine the leaf water potential of each plant variety and the leaf water use efficiency of each plant variety.

[0017] Optionally, the method further comprises:

[0018] In the second control area and the photovoltaic panel area of each plant variety, wind erosion measuring rods are arranged, and the second control area is an area without planting plants.

[0019] The determination of the soil data and ecological benefits corresponding to the plant variety comprises:

[0020] Every interval of a preset duration, determine the erosion height of a plurality of measuring rods included in each area, and calculate the average erosion height of each area, wherein the areas are one of the photovoltaic panel area and the second control area.

[0021] According to the average erosion height, the horizontal projection area of the corresponding area, and the slope of the slope surface, calculate the soil erosion volume of the area.

[0022] According to the soil erosion volume and the average density of the soil, determine the total soil erosion amount of each area, and the total soil erosion amount reduced by the photovoltaic panel area of each plant variety compared to the second control area.

[0023] According to the plant unit area biomass of each plant variety and the plant planting area of the photovoltaic panel area of each plant variety, determine the total plant yield.

[0024] Optionally, the determination of the soil data corresponding to the plant variety comprises:

[0025] Determine the water content of the soil corresponding to the plant variety by weight method.

[0026] After the soil corresponding to the plant variety is dried by air, organic matter is removed, and acid washing is performed to neutralize, sodium hexametaphosphate is added, and laser diffraction particle size analysis is used to determine the soil particle size.

[0027] The total carbon and total nitrogen content of the soil corresponding to the plant of the variety is determined by using an elemental analyzer;

[0028] The NO3- and NH4+ content of the soil corresponding to the plant of the variety is determined by using K2SO4 leaching method;

[0029] The available phosphorus of the soil corresponding to the plant of the variety is determined by using NaHCO3 leaching-molybdenum antimony anti-colorimetric method;

[0030] The water holding capacity of the soil corresponding to the plant of the variety is determined by using a cutting ring method.

[0031] Optionally, the photovoltaic array of the photovoltaic field area and the mechanical sand barrier corresponding to the photovoltaic array comprise:

[0032] Determine the photovoltaic panel, the photovoltaic panel support and the foundation in the photovoltaic field area;

[0033] According to the height of the photovoltaic panel installation, the main wind direction in the photovoltaic field area and the height of the photovoltaic panel, the photovoltaic array is laid out;

[0034] Configure an inverter to detect the power generation of the photovoltaic field area;

[0035] The area causing surface damage to the laid-out photovoltaic array is backfilled with soil;

[0036] According to the topographic features and wind-sand movement law of the photovoltaic field area, a mechanical sand barrier is laid along the photovoltaic array.

[0037] Optionally, the photovoltaic array is laid out according to the height of the photovoltaic panel installation, the main wind direction in the photovoltaic field area and the height of the photovoltaic panel, comprising:

[0038] In the case of following the main wind direction, the ratio of the spacing of the photovoltaic array to the height of the photovoltaic panel is not less than 1.5; in the case of against the main wind direction, the ratio of the spacing of the photovoltaic array to the height of the photovoltaic panel is not less than 2.

[0039] Optionally, the photovoltaic panel, the photovoltaic panel support and the foundation in the photovoltaic field area are determined, comprising:

[0040] The photovoltaic panel adopts a boron-doped double-sided PERC monocrystalline silicon wafer, the surface of the photovoltaic panel is covered with a high-transparency pressure layer glass and is coated with a nano-aluminum oxide composite film layer;

[0041] The photovoltaic panel support is made of weather-resistant steel material with a yield strength exceeding a preset value, the surface of the photovoltaic panel support adopts an aluminum-zinc alloy hot-dipping process, and the coating density exceeds 150 grams per square meter;

[0042] The foundation engineering of the photovoltaic panel support adopts a spiral alloy pile body, adopts a cutting type steel pile foundation or a screw pile foundation, and is implanted to a depth reaching a geologically stable layer.

[0043] Optionally, the monitoring feedback system based on the photovoltaic field layout monitors and acquires plant, soil and atmospheric state data of the photovoltaic field, including:

[0044] Deploying a plurality of sensing devices to collect environmental data of the photovoltaic field, the environmental data including atmospheric thermodynamic indicators, soil available state nutrient elements and soil physical and chemical characteristics;

[0045] Based on the environmental data, periodic data of vegetation growth and substrate water and heat conditions in the photovoltaic field are constructed through remote sensing and spectral diagnosis.

[0046] Optionally, the combination of low-bracket light-pursuing photovoltaic and one or more species of plants of Hedysarum fruticosum, Scutellaria baicalensis and Amorpha fruticosa, the combination of high-bracket light-pursuing photovoltaic and one or more species of plants of Hippophae rhamnoides and Salix psammophila, and the combination of inclined single-axis light-pursuing photovoltaic and Salix psammophila.

[0047] In a second aspect, the present application provides a device, which comprises a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes to make the device execute the photovoltaic, mechanical sand fixation and plant remediation synergistic desert governance method of any one of the preceding first aspect.

[0048] In a third aspect, the present application provides a computer storage medium, which stores codes, when the codes are executed, a device executing the codes implements the photovoltaic, mechanical sand fixation and plant remediation synergistic desert governance method of any one of the preceding first aspect.

[0049] The application provides a photovoltaic, mechanical sand fixation and plant repair synergistic desert management method. First, a photovoltaic array of a photovoltaic field area and a mechanical sand barrier corresponding to the photovoltaic array are constructed, so that the solar energy resources in the desert area can be fully utilized, and at the same time, the photovoltaic panel and the support for installing the photovoltaic panel can also be used to block the wind and sand, intercept the rainwater and reduce the soil evaporation. The mechanical sand barrier is further arranged corresponding to the photovoltaic array to further fix the sand. Based on this, after the target time length is set for the mechanical sand barrier, that is, after the soil is recovered, an irrigation system is set according to the soil moisture content to prepare for subsequent experimental planting, the planting data of a plurality of varieties of plants in the photovoltaic field area are evaluated, and the preferred varieties corresponding to each type of photovoltaic panel in the photovoltaic array are determined. In this way, the actual soil quality of the photovoltaic field area, the photovoltaic array, and the field area are considered, and after the photovoltaic array and the mechanical sand fixation are constructed and the soil is recovered for a certain period of time, the planting data are obtained according to the actual situation to determine the preferred varieties which are reliable and suitable for the actual needs of the environment of the photovoltaic field area. Then, based on the preferred varieties corresponding to each type of photovoltaic panel, the vegetation distribution of the photovoltaic field area is planned to obtain the planting varieties suitable for the environment of the photovoltaic field area. Finally, based on the monitoring feedback system arranged in the photovoltaic field area, the plant, soil and atmospheric state data of the photovoltaic field area are monitored and obtained, the periodic data of the photovoltaic field area are monitored, and reference data and optimization direction are provided for subsequent field area setting or other field areas. In this way, the photovoltaic sand control construction process of the photovoltaic field area is optimized, the steps of the photovoltaic sand control are standardized, the effect of the photovoltaic sand control is improved, the preferred varieties are determined, the survival and growth quality of the plants are improved, the ecological, economic and social benefits are improved, and the sustainable development of clean energy development and ecological restoration is realized. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0051] Figure 1 A flowchart of a photovoltaic, mechanical sand fixation and plant repair synergistic desert management method provided by the embodiments of the present application;

[0052] Figure 2 A structure diagram of a photovoltaic panel sequentially arranged with a mechanical sand barrier and plants provided by the embodiments of the present application;

[0053] Figure 3 A comparison diagram of different types of photovoltaic panels on the daily changes of microenvironment temperature and humidity provided by the embodiments of the present application. DETAILED DESCRIPTION

[0054] At present, there are few specific implementation schemes for the implementation process of photovoltaic sand control, the existing process is fragmented, and the mechanical sand barrier and the biological sand barrier are not combined, the windproof and sand fixation effect is general, and the resource utilization rate is not high.

[0055] Based on the above problems, the application provides a photovoltaic, mechanical sand fixation and plant remediation synergistic desert control method, which constructs a photovoltaic array first, then sets a mechanical sand barrier based on the photovoltaic array, and then starts to screen the optimal varieties corresponding to each type of photovoltaic panel in the photovoltaic field based on the planting data of the current field experiment after the target construction period of the mechanical sand barrier and the soil is recovered to a certain extent, plants the optimal varieties reliable and suitable for the actual needs of the environment of the photovoltaic field in the photovoltaic field based on this, and monitors and obtains the plant, soil and atmospheric state data of the photovoltaic field through the monitoring feedback system arranged in the photovoltaic field, monitors the periodic data of the photovoltaic field, and provides reference data and optimization direction for subsequent field setting or other fields. In this way, the photovoltaic field construction process of photovoltaic sand control is optimized, the steps of photovoltaic sand control are standardized, the effect of photovoltaic sand control is improved, the optimal varieties are determined, the survival and growth quality of plants are improved, the ecological, economic and social benefits are improved, and the sustainable development of clean energy development and ecological restoration is realized.

[0056] In order to be able to understand the characteristics and technical content of the embodiments of the present disclosure more thoroughly, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0057] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0058] Unless otherwise specified, the term "a plurality of" means two or more. In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B. The term "and / or" is a description of the relationship between the objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, the three relationships.

[0059] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0060] Referring to Figure 1 , Figure 1 A flowchart of a photovoltaic, mechanical sand fixation and plant restoration collaborative desert governance method provided by the embodiments of the present application is shown in FIG. 1. The photovoltaic, mechanical sand fixation and plant restoration collaborative desert governance method comprises the following steps.

[0061] S101, constructing a photovoltaic array of a photovoltaic field area and a mechanical sand barrier corresponding to the photovoltaic array.

[0062] The photovoltaic array is arranged in the photovoltaic field area, which can make full use of the characteristics of the desert area, such as flat terrain, strong solar radiation and long sunshine hours, which are conducive to photovoltaic power generation, to realize clean energy power generation.

[0063] Optionally, the photovoltaic panel in the photovoltaic field area can adopt a light-following photovoltaic panel, which can form a large inclination angle with the ground at an appropriate time of early morning and late evening solar radiation, so that the plants planted under and between the photovoltaic panels can receive the required light for growth. In addition, the light-following photovoltaic panel can be parallel to the ground at noon, which can provide more solar energy for the plants to avoid sunburn and increase the power generation.

[0064] The mechanical sand barrier is arranged corresponding to the photovoltaic array, because the construction of the photovoltaic array causes certain damage to the original environment in the early stage, and the sand soil has less nutrients and strong mobility, so the vegetation is not easy to survive. Therefore, the appropriate mechanical sand barrier can ensure the stability of the photovoltaic foundation, achieve the initial sand fixation effect, provide the possibility for the subsequent vegetation restoration, and increase the survival rate of plants.

[0065] Optionally, the mechanical sand fixation system can be arranged along the photovoltaic array according to the terrain characteristics and the wind and sand movement law. Referring to FIG. 2, which shows a structure schematic diagram of a photovoltaic panel sequentially arranged with a mechanical sand barrier and plants. Figure 2 The mechanical sand fixation system can be a square sand barrier, a gravel sand barrier, a special process sand barrier, etc.

[0066] Optionally, polylactic acid (PLA) sand barriers (sand bag size is 40 cm x 60 cm or 50 cm x 70 cm) and 1 m x 1 m grass squares are recommended.

[0067] S102. After the mechanical sand barrier is set for the target duration, an irrigation system is set according to the soil moisture content, the planting data of multiple plant varieties in the photovoltaic field are evaluated, and the preferred varieties corresponding to each type of photovoltaic panel in the photovoltaic array are determined, wherein the planting data includes growth data, soil data and ecological benefits.

[0068] Optionally, the above target duration may be two years or longer. Experiments have shown that a better plant survival rate can be achieved over two years. For specific examples, see Figure 1 below showing the corresponding relationship between the arrangement time of different mechanical measures and the vegetation survival rate.

[0069] Table 1

[0070]

[0071] Optionally, the irrigation system can increase the moisture content of the soil, with the goal of ensuring that the soil moisture content of the area where the plants are planted is not less than a target moisture content (for example, the target moisture content may be five percent).

[0072] Optionally, the irrigation system can be powered by photovoltaic power generation. For example, a photovoltaic pumping system can be installed to use photovoltaic-generated electricity to power irrigation; photovoltaic drip irrigation technology can be used to combine photovoltaic water pumps with precision drip irrigation; or a photovoltaic water collection device can be combined with a soil moisture monitoring sensor. The water collection device collects and accumulates rainwater and wastewater from photovoltaic panel cleaning, and the sensor accurately controls soil moisture content, improving water resource utilization efficiency. These measures can be used to ensure the soil moisture environment.

[0073] Optionally, the photovoltaic panel types mentioned above may include low-mount solar tracking photovoltaics, high-mount solar tracking photovoltaics, and oblique single-axis solar tracking photovoltaics. For each type of photovoltaic panel, corresponding native sand plants can be selected for screening experiments. Specifically, low-growing herbs can be planted on the low-mount solar tracking panels, while shrubs can be planted on the high-mount solar tracking panels.

[0074] Optionally, maintain appropriate spacing between rows and plants during the experimental plantings to ensure normal plant growth and proper operation of the photovoltaic panels. A nearby area with uniform soil physical and chemical properties and no photovoltaic panels (the first control area) should be established as a control for crop planting experiments. Ensure adequate irrigation in all planting areas to ensure a seedling survival rate of over 80% in each scenario. Recommended irrigation frequency is once a day in summer, every 3-4 days in spring and autumn, and at least once a week in winter. Then, after the planned duration of the experiment (e.g., one year), collect planting data to identify plant varieties suitable for photovoltaic sand control.

[0075] Optionally, the above can be performed on different types of photovoltaic panels, and corresponding plants can be planted between and under the photovoltaic panels to conduct experiments to obtain planting data, so as to screen preferred varieties suitable for planting between and under the panels.

[0076] S103, planning the vegetation distribution of the photovoltaic field area based on the preferred species corresponding to each type of photovoltaic panel.

[0077] Optionally, soil improvement can be performed before step S103, which is to increase soil nutrients and soil conservation capacity, for example, mixing livestock manure and leaf litter into sandy soil, adding soil water retaining agent, inorganic fertilizer and soil microbial fertilizer, etc.

[0078] Optionally, based on the selection of the preferred species suitable for photovoltaic sand repair plant repair, the vegetation repair project is scientifically planned, and seeding afforestation or seedling afforestation is recommended.

[0079] It should be noted that when planting plants, the damage to the previous mechanical sand barrier should be minimized, and reasonable plant spacing should be adopted during planting to reduce the negative impact of excessive or insufficient planting density on vegetation growth.

[0080] S104, a monitoring feedback system is arranged in the photovoltaic field area to monitor and obtain plant, soil and atmospheric state data in the photovoltaic field area.

[0081] Based on the above steps S101-S104, the present application adopts the synergistic management of photovoltaic, mechanical sand fixation and plant repair, ensures the safety and stability of the photovoltaic desert while ensuring the plant growth light environment and mechanical operation through the setting of photovoltaic array, saves the cost of photovoltaic sand repair (for example, provides driving power for irrigation system, etc.), improves the efficiency and economic benefit of photovoltaic sand repair; through the setting of mechanical sand barrier, the stability of photovoltaic foundation is ensured, the preliminary sand fixation effect is realized, the vegetation repair is provided with the possibility, and the plant survival rate is increased; through the selection of preferred species and the vegetation repair based on the preferred species, the reliability of vegetation repair is improved, the cost of photovoltaic sand repair is saved, the wind prevention and sand fixation improve the desert environment, and the extension of desertification is suppressed. Finally, through the detection feedback system, the timely error correction and update of the above-mentioned photovoltaic, mechanical sand fixation and plant repair are ensured, and the sustainable development of photovoltaic sand repair is realized. In this way, the photovoltaic field area construction process of photovoltaic sand repair is optimized, the steps of photovoltaic sand repair are standardized, the effect of photovoltaic sand repair is improved, the preferred species is determined, the survival and growth quality of plants are improved, the ecological, economic and social benefits are improved, and the clean energy development and ecological restoration are realized. The sustainable development of synergy is realized.

[0082] In the embodiment of the present application, the above Figure 1 The step S102 has a plurality of possible implementation manners, which will be introduced below. It should be noted that the implementation manners given in the following introduction are only exemplary and do not represent all implementation manners of the present application.

[0083] The step S102 of evaluating the planting data of the multiple plant species in the photovoltaic field area determines the preferred plant species corresponding to each type of photovoltaic panel in the photovoltaic array, including:

[0084] The multiple plant species of each type are arranged in the photovoltaic panel area and the first control area, and each of the plant species is arranged in the photovoltaic panel area and the first control area.

[0085] It can be understood that the influence of the photovoltaic panel and the mechanical sand barrier on the plant species is analyzed by subsequently obtaining the planting data of the plant species in the photovoltaic panel area and the planting data of the first control area.

[0086] The photovoltaic panel area can be further divided into a photovoltaic panel area and a photovoltaic panel area, and the corresponding plant species can be planted, which is beneficial to subsequent analysis of the plant species suitable for planting under the photovoltaic panel and between the photovoltaic panels, and makes full use of the land resources around the photovoltaic panel to achieve a larger range of wind prevention and sand fixation.

[0087] The growth data and leaf water data of each plant species are measured, and the soil data and ecological benefits corresponding to each plant species are measured to determine the preferred plant species corresponding to the type of photovoltaic panel.

[0088] In this way, by analyzing the growth data of the plant and the net photosynthetic rate of the plant, the adaptability of the plant to the desert photovoltaic area (the influence of the desert photovoltaic on the growth of each plant and whether the plant can survive) is determined. By analyzing the single biomass, leaf water data (leaf water potential and leaf water use efficiency), etc., the influence of the desert photovoltaic on the physiology of the plant is verified, and the plant species suitable for growth under the desert photovoltaic of different architectures is screened out. Further, soil samples are collected, and soil data (such as soil moisture content, particle size composition, nutrient content, soil microbial community characteristics, etc.) and ecological benefits are analyzed to screen out plant species suitable for photovoltaic sand control.

[0089] Based on the above embodiment, in an example, the growth data of each plant species can include:

[0090] The survival rate, plant height, crown width, base diameter, plant net photosynthetic rate, and biomass of the plant species during the experimental test period are measured as the growth data of the plant species.

[0091] Optionally, the survival rate = (the number of surviving individuals at the survey period ÷ the number of sown individuals) × 100%

[0092] Optionally, the plant height, crown width, and base diameter of the plant during the plant growth period are measured to obtain intuitive plant growth condition indicators.

[0093] Optionally, the above-mentioned plant net photosynthetic rate can be measured by using Li-6800 portable photosynthesis system.

[0094] In an example, the above-mentioned measuring the leaf water data of each variety of plant can include:

[0095] In the growing season of the variety of plant, the plant leaves of each variety of plant at the same time point are obtained, and the leaf water potential of each variety of plant and the leaf water use efficiency of each variety of plant are measured.

[0096] Optionally, in July and August of the growing season, at least 5 well-grown plants in each sample plot (randomly selected in the same variety of plant and the same photovoltaic panel area or the first control area) are quickly collected at noon, and the plant leaf water potential is measured by using a dew point psychrometer.

[0097] Optionally, the plant leaf water use efficiency = photosynthetic rate ÷ transpiration rate.

[0098] In an example, the above-mentioned implementation manner of measuring the soil data corresponding to the variety of plant can be as follows:

[0099] Firstly, in the above-mentioned step S102, after the plants are planted, the wind erosion measuring rods or the wind erosion circles are also laid out. Specifically, the wind erosion measuring rods are laid out in the second control area and the photovoltaic panel area of each variety of plant, and the second control area is an area without planting plants.

[0100] In this way, the amount of wind erosion of the soil per unit area in each scenario can be used to observe the wind and sand season (generally 3-4 months) and the annual wind erosion amount. It can also be compared with the second control area to judge the reduced amount of wind and sand erosion under the plant shadow of the photovoltaic panel area.

[0101] Further, the above-mentioned measuring the soil data corresponding to the variety of plant can include:

[0102] Every interval of a preset time length, the erosion height of the plurality of measuring rods included in each area is determined, and the average erosion height of each area is calculated, the area being one of the photovoltaic panel area and the second control area; according to the average erosion height, the horizontal projection area of the corresponding area and the slope of the slope, the soil erosion volume of the area is calculated; according to the soil erosion volume and the average density of the soil, the total amount of soil erosion of each area and the total amount of soil erosion reduced by the photovoltaic panel area of each variety of plant compared with the second control area are determined.

[0103] Exemplarily, before the sandstorm season, stakes with a length of 80-100 cm and a diameter of 6-8 mm are arranged in the photovoltaic panel area and the second control area, and the depth of insertion is 50 cm. During each monitoring, the scale on the stake is read and recorded, the height of the erosion drop is calculated, and the total volume of soil erosion is calculated according to the average value of the erosion drop of multiple stakes.

[0104] The total volume of soil erosion A is Z×S×1000×cosθ. Wherein, A represents the volume of soil erosion; Z represents the erosion thickness; S represents the horizontal projection area of the monitoring area; and θ represents the slope of the slope.

[0105] The total amount of soil erosion is the volume of eroded soil×the average density of the soil.

[0106] Optionally, the soil data corresponding to the plants of the variety can further include:

[0107] The water content of the soil corresponding to the plants of the variety is determined by the weight method; the soil corresponding to the plants of the variety is dried by air, the organic matter is removed, and after being washed with acid to neutral, sodium hexametaphosphate is added, and the soil particle size is determined by laser diffraction particle size analysis; the total carbon and total nitrogen content of the soil corresponding to the plants of the variety is determined by an elemental analyzer; the NO3- and NH4+ content of the soil corresponding to the plants of the variety is determined by K2SO4 extraction; the available phosphorus of the soil corresponding to the plants of the variety is determined by NaHCO3 extraction-molybdenum antimony anti-colorimetric method; the average density of the soil is determined by the density bottle method; the composition of the soil microbial community is determined based on high-throughput sequencing technology; and the water holding capacity of the soil corresponding to the plants of the variety is determined by the cutting ring method.

[0108] Exemplarily, the determination of the soil particle size can be that 1 g of air-dried soil sample is taken in a beaker, 6% H2O2 solution is added and heated to remove soil organic matter, hydrochloric acid is added after cooling to remove carbonate, and sodium hexametaphosphate is added after washing the acid to neutral, and the soil particle size is determined by laser diffraction particle size analysis.

[0109] In an example, the calculation of the ecological benefit can include:

[0110] The total plant yield is determined according to the plant unit area biomass of each plant of the variety and the plant planting area of the photovoltaic panel area of each plant of the variety.

[0111] Exemplarily, the total plant yield CY is Y×S / 1000, wherein CY is the total plant yield (kg), Y is the plant unit area biomass (g·m-2), and S is the plant planting area (m2). -2 2

[0112] Optionally, the calculation of the ecological benefit can also calculate the soil fertility, and the specific calculation can be as follows:​​

[0113] S F =S×T×ρ×Ci,

[0114] Among them, S F is the organic carbon and total nitrogen content in the soil (g); S is the area of ​​the photovoltaic power station (m 2 ); T is the thickness of the soil tillage layer (m); ρ is the soil bulk density (g·cm -3) ; Ci is the organic matter and total nitrogen content in the soil (g·kg -1 ).

[0115] Soil fertility can reflect the ability of soil to supply nutrients to plants and the comprehensive reflection of environmental conditions when soil nutrients supply plants.

[0116] Optionally, the ecological benefits can also be calculated by calculating carbon sequestration and oxygen release, as follows:

[0117] Soil organic carbon storage SNC = ∑Di×E×Bi×Ni×10, where i represents the number of soil layers; Di represents the depth of the i-th layer of soil (cm); E represents the soil area (m 2 ); Bi represents the bulk density of soil in layer i (g·cm -3 ); Ni represents the soil carbon content in layer i (g·kg-1).

[0118] Oxygen release A O =S T ×R; where R is the conversion coefficient of plant fixation of CO2 and release of O2; S T represents the ecosystem carbon storage, S T =S B +S R +S L +S S , S T represents ecosystem carbon storage (g·m -2 );S B represents the aboveground carbon storage of vegetation (g·m -2 );S R represents the root carbon storage (g·m -2 );S L represents litter carbon storage (g·m -2 );S S Indicates soil carbon storage in the 0-30 cm range (g·m -2 ). In this way, the ecological benefits of climate regulation are characterized by measuring the amount of oxygen released by plants during plant photosynthesis.

[0119] Furthermore, the preferred varieties can be determined by sorting the data such as the above-mentioned measured plant growth physiological status, total soil erosion, ecological benefits, etc., or by sorting by weighted summation.

[0120] Based on the above embodiment, the step S101 of constructing the photovoltaic array of the photovoltaic field and the mechanical sand barrier corresponding to the photovoltaic array comprises:

[0121] First, determine the photovoltaic panel, the photovoltaic panel support and the foundation in the photovoltaic field.

[0122] Optionally, the photovoltaic panel adopts a boron-doped double-sided PERC monocrystalline silicon wafer (photoelectric conversion efficiency ≥ 22.5%), and the surface of the photovoltaic panel is covered with a 3mm high-transparency pressure layer glass and coated with a nano-aluminum oxide composite film layer (Mohs hardness up to 9 levels).

[0123] Optionally, the photovoltaic panel support is a weather-resistant steel material with a yield strength exceeding a preset value, and the surface of the photovoltaic panel support adopts an aluminum-zinc alloy hot-dip process with a coating density exceeding 150 grams per square meter, and the salt spray corrosion period is prolonged to more than twice that of ordinary galvanized parts.

[0124] Optionally, the foundation engineering of the photovoltaic panel support adopts a spiral alloy pile body with a diameter of 30 centimeters and a wall thickness of 8 millimeters, and adopts a cutting type steel pile foundation or a threaded steel pile foundation, which better prevents wind and sand and ensures high-quality operation of the photovoltaic power generation system. The implantation depth reaches the geologically stable layer, and the conventional depth interval is 2.8-3.5 meters. The structure is stable by means of the synergistic mechanism of the friction resistance of the pile body and the bearing capacity of the base.

[0125] For example, referring to Figure 3 The schematic diagram of the contrast of the micro-environment temperature and humidity daily variation of different types of photovoltaic panel architectures. The photovoltaic component panel shields direct sunlight, effectively reducing soil evaporation and increasing micro-environment humidity, which to some extent improves the survival environment of plants under the panel, such as Figure 3 The temperature under the high panel, inclined single-axis and low panel three types of photovoltaic panel architectures is reduced by 0.30℃, 1.41℃ and 1.77℃ respectively compared with the control, and the humidity under the high panel, inclined single-axis and low panel three types of photovoltaic panel architectures is increased by 0.54%, 16.72% and 18.02% respectively compared with the control, and the panel-to-panel is increased by 0.39%, 2.02% and 2.04% respectively compared with the control. Therefore, in terms of humidity and temperature, inclined single-axis and low panel bring better growth environment for plant growth. The above control can be the first control area.

[0126] Optionally, inclined single-axis support photovoltaic can reduce the narrow pipe effect caused by low support photovoltaic while effectively blocking the wind and sand movement caused by high support photovoltaic. Optionally, according to the influence of photovoltaic panels of different heights on local micro-environment and wind and sand movement, a combination of photovoltaic panels of different heights can be used. And the vegetation adapted to different heights of photovoltaic panels is different. Considering the improvement of biodiversity and the enhancement of ecological system stability, diversified photovoltaic panel heights can be set.

[0127] Then, the photovoltaic array is laid out according to the height of the photovoltaic panel installation, the main wind direction in the photovoltaic field area, and the height of the photovoltaic panel.

[0128] Reasonably setting the installation height of the photovoltaic panel can reduce the ground temperature, reduce soil evaporation, retain precious water resources in the desert, reduce the temperature and solar radiation under the panel, and create a more suitable living environment for sand plants and soil microorganisms. Thus, the surface radiation can be balanced to improve the living environment of plants.

[0129] Optionally, in order to reasonably arrange the photovoltaic panel array, the plants can be ensured to be properly shaded and the light receiving requirement of the ground plants is maximized, and considering the damage of wind-sand flow to the photovoltaic panel, a sufficient safety distance should be left for the photovoltaic panel. Therefore, in the case of following the main wind direction, the ratio of the spacing of the photovoltaic array to the height of the photovoltaic panel is not less than 1.5; in the case of against the main wind direction, the ratio of the spacing of the photovoltaic array to the height of the photovoltaic panel is not less than 2. Thus, the wind erosion rate can be controlled to be <800 t / (km²·a), and the power generation loss caused by the wake effect is avoided to be >3%.

[0130] Then, the inverter is configured to detect the power generation of the photovoltaic field area.

[0131] Further, the area causing surface damage due to the layout of the photovoltaic array is backfilled with soil.

[0132] Optionally, the construction process of the photovoltaic power station will damage the original vegetation and soil crust on the ground, which is not conducive to the later vegetation restoration and the soil itself to play a sand fixation role (such as forming crust, aggregate, etc.). Therefore, the damage to the landmark caused by the construction of the photovoltaic array can be reduced by backfilling with soil, for example, applying 80% original sand + 20% gravel, which is beneficial to the later restoration and increases the roughness of the underlying surface to reduce the wind speed and wind-sand flow intensity.

[0133] Finally, according to the topographic features and wind-sand movement law of the photovoltaic field area, mechanical sand barriers are arranged along the photovoltaic array.

[0134] The mechanical sand barrier is set because the photovoltaic array construction in the photovoltaic field area is in the initial stage, the sand soil has poor nutrient conditions and strong fluidity, and the original habitat is damaged by engineering construction, which makes it difficult for vegetation to survive. Based on this, mechanical sand fixation systems such as square sand barriers, gravel sand barriers, and special process sand barriers can be arranged along the photovoltaic array according to the topographic features and wind-sand movement law. Optionally, polylactic acid (PLA) sand barriers (sand bag size is 40 cm×60 cm or 50 cm×70 cm) and 1 m×1 m grass square can be used.

[0135] Optionally, the vegetation restoration in step S103 can be performed in combination with the following modes selected through experimental screening: low-bracket light-chasing photovoltaic combined with Hedysarum fruticosum, low-bracket light-chasing photovoltaic combined with Scutellaria baicalensis, low-bracket light-chasing photovoltaic combined with Amorpha fruticosa, high-bracket light-chasing photovoltaic combined with Hippophae rhamnoides, high-bracket light-chasing photovoltaic combined with Salix, and oblique single-axis light-chasing photovoltaic combined with Salix.

[0136] Based on the above embodiment, the monitoring feedback system based on the photovoltaic field area layout in step S104, the plant, soil, and atmospheric state data of the photovoltaic field area are monitored and acquired, which can include:

[0137] The multi-element sensing device is deployed to collect environmental data of the photovoltaic field area, and the environmental data includes atmospheric thermodynamic indicators, soil available state nutrient elements, and soil physical and chemical characteristics.

[0138] Based on the environmental data, the periodic data of the vegetation growth and the water and heat conditions of the substrate in the photovoltaic field area are constructed through remote sensing and spectral diagnosis.

[0139] In this way, the irrigation system, planted crops, and operation state of the photovoltaic array of the photovoltaic field area are quantitatively controlled according to the periodic data. The photovoltaic, mechanical sand fixation, and vegetation restoration can be timely corrected and updated, and the sustainable development of photovoltaic sand control is realized.

[0140] Based on the above embodiment, a reliable photovoltaic array is arranged in the photovoltaic field area to ensure the stability and safety of the photovoltaic in the wind and sand season. Meanwhile, a mechanical sand barrier is arranged, and after the target construction time of the mechanical sand barrier, the surface is recovered for a certain time, and the selection of the optimized variety is performed. Specifically, the plant growth and physiological conditions, soil erosion amount, and ecological benefits are taken into the core parameters of the selection of the photovoltaic sand control excellent variety, the selection result is more comprehensive and scientific, the evaluation period is compressed, and the selection validity is improved. Further, the photovoltaic, mechanical sand fixation, and plant restoration collaborative system is reasonably arranged, the photovoltaic sand control steps are scientifically and reasonably standardized, the photovoltaic sand control efficiency is improved, and the cost is saved.

[0141] The application also provides a corresponding device and a computer storage medium for implementing the scheme provided in the embodiments of the application.

[0142] The device includes a memory and a processor, the memory is used to store instructions or codes, and the processor is used to execute the instructions or codes to enable the device to perform the method described in any embodiment of the application.

[0143] The computer storage medium stores codes, and when the codes are executed, the device executing the codes implements the method described in any embodiment of the application.

[0144] The "first", "second" in the names of the "first", "second" mentioned in the embodiments of the present application are only used for name identification, and do not represent the first, second in order.

[0145] From the description of the above embodiments, those skilled in the art can clearly understand that all or part of the steps in the above-mentioned embodiment methods can be implemented by means of software plus a general hardware platform. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product. The computer software product can be stored in a storage medium, such as a read-only memory (English: read-only memory, ROM) / RAM, a magnetic disc, an optical disc, etc., and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of the present application.

[0146] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, they are described more simply, and the relevant parts refer to the part of the method embodiments. According to the actual needs, some or all of the modules can be selected to achieve the purpose of the embodiment scheme. Those skilled in the art can understand and implement without creative labor.

[0147] The above is only an exemplary embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A method for desert control using photovoltaic, mechanical sand fixation and phytoremediation synergistically, characterized in that: The method comprises: Constructing a photovoltaic array in a photovoltaic field area and a mechanical sand barrier corresponding to the photovoltaic array; After the mechanical sand barrier is set for a target duration, an irrigation system is set according to soil moisture content, planting data of multiple plant varieties in the photovoltaic field is evaluated, and preferred varieties corresponding to each type of photovoltaic panel in the photovoltaic array are determined, wherein the planting data includes growth data, soil data, and ecological benefits; Planning vegetation distribution in the photovoltaic area based on the preferred varieties corresponding to each type of photovoltaic panel; Based on the monitoring feedback system deployed in the photovoltaic field, the status data of plants, soil and atmosphere in the photovoltaic field are monitored and obtained.

2. The method according to claim 1, characterized in that The step of evaluating the planting data of multiple plant varieties in the photovoltaic field to determine the preferred varieties corresponding to each type of photovoltaic panel in the photovoltaic array includes: Arrange multiple varieties of plants corresponding to each type of photovoltaic panel on the photovoltaic panel, and arrange each variety of plants in the photovoltaic panel area and a first control area respectively, wherein the first control area is an area where no photovoltaic panels are arranged; The growth data and leaf moisture data of each variety of plants are measured, as well as the soil data and ecological benefits corresponding to each variety of plants, to determine the preferred variety corresponding to the type of photovoltaic panel.

3. The method according to claim 2, characterized in that The determination of growth data of each variety of plants includes: Determining the survival rate, plant height, crown width, base diameter, plant net photosynthetic rate, and biomass of the plant variety during the experimental test period as growth data of the plant variety; Determine leaf moisture data for various plant species, including: During the growing season of the plant varieties, plant leaves of each plant variety at the same time point are obtained to measure the leaf water potential and leaf water use efficiency of each plant variety.

4. The method according to claim 2, characterized in that The method further comprises: Wind erosion measuring rods are respectively arranged in the second control area and the photovoltaic panel area of ​​each plant variety, wherein the second control area is an area without planting plants; The determination of soil data and ecological benefits corresponding to the plant variety includes: At intervals of a preset time, determining the erosion drop heights of a plurality of measuring rods included in each area, and calculating the average erosion height of each area, wherein each area is one of the photovoltaic panel area and the second control area; Calculating the soil erosion volume of the region based on the average erosion height, the horizontal projection area of ​​the corresponding region, and the slope gradient; Determine the total amount of soil erosion in each area and the total amount of soil erosion reduced in the photovoltaic panel area of ​​each plant variety compared to the second control area based on the soil erosion volume and the average soil density; The total plant yield is determined based on the plant biomass per unit area of ​​each plant variety and the plant planting area of ​​the photovoltaic panel region of each plant variety.

5. The method according to claim 4, characterized in that The determining of soil data corresponding to the plant variety includes: Determine the water content of the soil corresponding to the plant variety by gravimetric method; The soil corresponding to the plant species is air-dried, organic matter is removed, and acid-washed until neutral, followed by addition of sodium hexametaphosphate, and the soil particle size is measured using laser diffraction particle size analysis; Determine the total carbon and total nitrogen content of the soil corresponding to the plant variety using an element analyzer; The NO3- and NH4+ contents of the soil corresponding to the plant species were determined using the K2SO4 extraction method; The available phosphorus in the soil corresponding to the plant species was determined by using the NaHCO3 extraction-molybdenum antimony colorimetric method; The water retention capacity of the soil corresponding to the plant variety was determined using the ring knife method.

6. The method according to claim 1, characterized in that The photovoltaic array of the photovoltaic field and the mechanical sand barrier corresponding to the photovoltaic array include: Determining photovoltaic panels, photovoltaic panel supports and foundations in a photovoltaic field area; Arrange the photovoltaic array according to the installation height of the photovoltaic panels, the main wind direction in the photovoltaic field and the height of the photovoltaic panels; configuring an inverter to detect the power generation of the photovoltaic field; Backfilling the area where the surface is damaged by the photovoltaic array; According to the terrain characteristics and wind and sand movement laws of the photovoltaic area, mechanical sand barriers are laid out along the photovoltaic arrays.

7. The method according to claim 6, characterized in that The step of arranging the photovoltaic array according to the installation height of the photovoltaic panels, the main wind direction in the photovoltaic field, and the height of the photovoltaic panels includes: When in the direction of the main wind, the ratio of the spacing between the photovoltaic arrays to the height of the photovoltaic panels shall not be less than 1.5; when against the main wind, the ratio of the spacing between the photovoltaic arrays to the height of the photovoltaic panels shall not be less than 2.

8. The method according to claim 6, characterized in that The step of determining the photovoltaic panels, the photovoltaic panel supports, and the foundation in the photovoltaic field area includes: The photovoltaic panel adopts boron-doped double-sided PERC monocrystalline silicon wafers, and the surface of the photovoltaic panel is covered with high-transmittance laminated glass and plated with a nano-aluminum oxide composite film layer; The photovoltaic panel bracket is made of weathering steel with a yield strength exceeding the preset value. The surface of the photovoltaic panel bracket adopts the aluminum-zinc alloy hot-dip process, and the coating density exceeds 150 grams per square meter; The foundation engineering of photovoltaic panel bracket adopts spiral alloy pile body, inserting steel frame pile foundation or threaded steel pile foundation, and the implantation depth reaches the geological stable layer.

9. The method according to claim 1, characterized in that The monitoring and feedback system deployed in the photovoltaic area monitors and obtains data on the status of plants, soil, and atmosphere in the photovoltaic area, including: Deploy a multi-sensor device to collect environmental data of the photovoltaic field, wherein the environmental data includes atmospheric thermodynamic indicators, soil available nutrient elements, and soil physical and chemical characteristics; Based on the environmental data, periodic data of vegetation growth and substrate hydrothermal conditions in the photovoltaic field are constructed through remote sensing and spectral diagnosis.

10. The method according to claim 1, characterized in that The preferred varieties corresponding to the various types of photovoltaic panels include: The combination of low-support solar-chasing photovoltaic and one or more varieties of plants including Astragalus membranaceus, Scutellaria baicalensis and Amorpha fruticosa; the combination of high-support solar-chasing photovoltaic and one or more varieties of plants including Poplar and Salix psammophila; the combination of oblique single-axis solar-chasing photovoltaic and Salix psammophila.

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