Haloxylon ammodendron forest degradation early warning and repairing method based on stoichiometric internal stability

Abstract

The invention discloses a haloxylon ammodendron forest degradation early warning and repairing method based on stoichiometric internal stability. The method comprises the following steps: acquiring a linear attenuation equation and an exponential attenuation equation corresponding to a constructed artificial haloxylon ammodendron forest; calculating a first internal stability index of the artificial haloxylon ammodendron forest according to the linear attenuation equation, the index attenuation equation and the tree age of the artificial haloxylon ammodendron forest; performing early warning grading on the degradation of the artificial haloxylon ammodendron forest based on the first internal stability index and a preset early warning threshold to obtain a grading result; and according to a grading result, selecting a corresponding repairing mode to carry out intelligent repairing. According to the method, the artificial haloxylon ammodendron forest can be early warned in advance and subsequently repaired for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of growth management of Haloxylon ammodendron forests, and in particular to, but not limited to, a Haloxylon ammodendron forest degradation early warning and restoration method based on stoichiometric homeostasis. Background Art

[0002] Haloxylon ammodendron forests are important windbreaks and sand-fixing plants in arid regions. Widely distributed throughout desert ecosystems, they play a key role in combating desertification, protecting oasis ecosystems, and maintaining regional ecological balance. In recent years, due to the intensification of climate change, water shortages, human interference, and the impact of pests and diseases, Haloxylon ammodendron forests in some areas have experienced degradation and death, seriously threatening their ecological functions. To address this issue, relevant departments have begun establishing an ecological early warning system for Haloxylon ammodendron forests and implementing restoration projects to ensure dynamic monitoring and scientific management of Haloxylon ammodendron forest resources. In this context, determining the extent of Haloxylon ammodendron forest degradation and subsequent restoration have become paramount issues.

[0003] Related technologies use morphological observations of Haloxylon ammodendron forests to determine if they are degrading, and then use manual judgment to determine if they are degrading. However, this method relies primarily on manual judgment, resulting in issues such as an inability to accurately predict the extent of Haloxylon ammodendron forest degradation and difficulty developing long-term restoration plans.

[0004] Therefore, how to provide early warning for the degradation of Haloxylon ammodendron forests and subsequently formulate long-term restoration plans has become an urgent problem to be solved. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides a Haloxylon ammodendron forest degradation warning and restoration method based on stoichiometric homeostasis, which at least solves the problem that related technologies are unable to provide early warning of Haloxylon ammodendron forest degradation and subsequently formulate long-term restoration plans.

[0006] According to a first aspect of an embodiment of the present invention, a method for early warning and restoration of Haloxylon ammodendron forest degradation based on stoichiometric homeostasis is provided, comprising: Obtaining a linear attenuation equation and an exponential attenuation equation corresponding to the constructed artificial Haloxylon ammodendron forest; and calculating a first homeostasis index of the artificial Haloxylon ammodendron forest based on the linear attenuation equation, the exponential attenuation equation, and the age of the artificial Haloxylon ammodendron forest; Based on the first homeostasis index and a preset warning threshold, the degradation of the artificial Haloxylon ammodendron forest is graded to obtain a grading result; and a corresponding repair method is selected according to the grading result to perform intelligent repair.

[0007] According to a second aspect of an embodiment of the present invention, an electronic device is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform an operation corresponding to the method described in the first aspect.

[0008] According to a third aspect of an embodiment of the present invention, a computer storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the method according to the first aspect is implemented.

[0009] According to the solution provided by an embodiment of the present invention, a linear attenuation equation and an exponential attenuation equation corresponding to the constructed artificial Haloxylon ammodendron forest are obtained; and a first homeostasis index of the artificial Haloxylon ammodendron forest is calculated based on the linear attenuation equation, the exponential attenuation equation, and the age of the artificial Haloxylon ammodendron forest; based on the first homeostasis index and a preset early warning threshold, the degradation of the artificial Haloxylon ammodendron forest is graded to obtain a grading result; and a corresponding restoration method is selected based on the grading result for intelligent restoration. In this process, by combining the forest age segmentation model (linear attenuation of young forests, exponential attenuation of declining forests) with the stoichiometric homeostasis threshold, the risk of degradation can be discovered 4-6 years in advance, which is an earlier response than traditional morphological indicators. Different artificial Haloxylon ammodendron forests are repaired differently based on the grading results, making the restoration more targeted and achieving a better long-term restoration effect on the Haloxylon ammodendron forest. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which: Figure 1 A schematic flow chart of a Haloxylon ammodendron forest degradation early warning and restoration method based on stoichiometric homeostasis provided by an embodiment of the present invention; Figure 2 The figure is a schematic structural diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0012] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0013] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present invention are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present invention described here can be implemented in an order other than that illustrated or described here.

[0014] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art in the art to which the embodiments of the present invention pertain. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless specifically defined as herein, should not be interpreted in an idealized or overly formal sense.

[0015] Figure 1 A flow chart of a Haloxylon ammodendron forest degradation early warning and repair method based on stoichiometric homeostasis provided in an embodiment of the present invention. The Haloxylon ammodendron forest degradation early warning and repair method based on stoichiometric homeostasis provided in an embodiment of the present invention can be executed by an electronic device, such as a computer, a server, etc.

[0016] like Figure 1 As shown in the figure, the early warning and restoration methods for Haloxylon ammodendron forest degradation based on stoichiometric homeostasis include: S101. Obtain a linear attenuation equation and an exponential attenuation equation corresponding to the constructed artificial Haloxylon ammodendron forest; and calculate a first homeostasis index of the artificial Haloxylon ammodendron forest based on the linear attenuation equation, the exponential attenuation equation, and the tree age of the artificial Haloxylon ammodendron forest.

[0017] In an embodiment of the present invention, the homeostasis index can be used to evaluate how a species or community maintains the stability of its key life processes (such as growth rate, reproductive success rate, etc.), even when external conditions fluctuate. A linear attenuation equation and an exponential attenuation equation are constructed based on the age of the artificial Haloxylon ammodendron forest. The linear attenuation equation is for the artificial Haloxylon ammodendron forest in its young stage (<15 years), and the exponential attenuation equation corresponds to the Haloxylon ammodendron forest in its decline stage (≥15 years). Substituting the age of the artificial Haloxylon ammodendron forest into the linear attenuation equation or the exponential attenuation equation, the corresponding first homeostasis index can be calculated. Among them, the linear attenuation equation is shown below: H1=1.32-0.024t The exponential decay equation is as follows: H1=1.01e^(-0.018t) In the above formula, H1 is the first homeostasis index, and t is the age of the tree.

[0018] Among them, the degradation critical point (H1≤0.82±0.03) can be accurately determined by the above formula.

[0019] For example, the artificial Haloxylon ammodendron forest of 9a is taken as the object, and the artificial Haloxylon ammodendron forest of 9a is in the young stage, so the artificial Haloxylon ammodendron forest of 9a is substituted into the linear attenuation equation to obtain the corresponding first homeostasis index.

[0020] S102: Perform early warning classification on the degradation of the artificial Haloxylon ammodendron forest based on the first homeostasis index and a preset early warning threshold to obtain a classification result; and select a corresponding restoration method for intelligent restoration according to the classification result.

[0021] In an embodiment of the present invention, a preset warning threshold is set, and the first homeostasis index is compared with the preset warning threshold to perform warning classification on the degradation degree of the artificial Haloxylon ammodendron forest, which can be specifically divided into level one, level two and level three. Then, different repair methods are selected according to different levels to perform intelligent repair on the degraded artificial Haloxylon ammodendron forest.

[0022] It is understandable that in the embodiments of the present invention, the linear attenuation equation and the exponential attenuation equation corresponding to the constructed artificial Haloxylon ammodendron forest are obtained; and the homeostasis index of the artificial Haloxylon ammodendron forest is calculated based on the linear attenuation equation, the exponential attenuation equation and the age of the artificial Haloxylon ammodendron forest; the degradation of the artificial Haloxylon ammodendron forest is graded based on the homeostasis index and the preset early warning threshold to obtain a grading result; and the corresponding restoration method is selected according to the grading result for intelligent restoration. In this process, by combining the forest age segmentation model (linear attenuation of young forests, exponential attenuation of declining forests) with the stoichiometric homeostasis threshold, the degradation risk can be discovered 4-6 years in advance, which is an earlier response than traditional morphological indicators. Different artificial Haloxylon ammodendron forests are repaired differently based on the grading results, making the restoration more targeted and having a better long-term restoration effect on the Haloxylon ammodendron forest.

[0023] In some embodiments of the present invention, S102 also includes S201 to S202, which is explained through the following steps.

[0024] S201. Obtain first data on carbon, nitrogen, and phosphorus contents of artificial Haloxylon ammodendron forest samples of different forest ages, and second data on carbon, nitrogen, and phosphorus contents of soil.

[0025] In some embodiments of the present invention, samples of artificial Haloxylon ammodendron forests of different ages may include 2-year-old, 5-year-old, 9-year-old, 15-year-old, 25-year-old, 35-year-old, and 45-year-old plantations, and the carbon, nitrogen, and phosphorus contents of these samples are obtained and used as the first data. Simultaneously, the carbon, nitrogen, and phosphorus contents of the soil are obtained and used as the second data.

[0026] S202 , calculating the second homeostasis index corresponding to each artificial Haloxylon ammodendron forest sample based on the first data, the second data and the homeostasis index formula, and constructing a linear attenuation equation and an exponential attenuation equation based on the second homeostasis index.

[0027] In some embodiments of the present invention, the homeostasis index formula is as follows: H2=log (plant C:N:P) / log (soil C:N:P) In the above formula, H2 is the second homeostasis index, the plant is an artificial Haloxylon ammodendron forest, and C, N and P are the contents of carbon, nitrogen and phosphorus, respectively.

[0028] Furthermore, the first data and the second data were substituted into the homeostasis index formula to calculate the second homeostasis index corresponding to each artificial Haloxylon ammodendron forest sample, and finally a linear attenuation equation and an exponential attenuation equation were constructed using the second homeostasis index.

[0029] Among them, through Sigmoid function fitting, it was found that the C homeostasis threshold of Haloxylon ammodendron forest reached an inflection point at 15 years, entering a period of ecological strategy transformation.

[0030] In some embodiments of the present invention, S102 performs early warning classification on the degradation of the artificial Haloxylon ammodendron forest based on the first homeostasis index and the preset early warning threshold, and obtains the classification result, which can be achieved through S1021 to S1022, which is explained by the following steps.

[0031] S1021. When the first internal stability index is not less than the second warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level one.

[0032] S1022. When the first internal stability index is not less than the first warning threshold and less than the second warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level two; and when the first internal stability index is less than the first warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level three.

[0033] In some embodiments of the present invention, the preset warning threshold includes a first warning threshold and a second warning threshold, the second warning threshold is greater than the first warning threshold, the first homeostasis index is compared with the first warning threshold and the second warning threshold respectively, and the degree of degradation of the artificial Haloxylon ammodendron forest is determined according to the comparison results.

[0034] For example, the second warning threshold can be 1.2, and the first warning threshold can be 0.8. When the first homeostasis index H1 ≥ 1.2, the degradation degree of the artificial Haloxylon ammodendron forest is level 1. When the first homeostasis index 0.8 ≤ H1 < 1.2, the degradation degree of the artificial Haloxylon ammodendron forest is level 2. When the first homeostasis index H1 < 0.8, the degradation degree of the artificial Haloxylon ammodendron forest is level 3.

[0035] Among them, when H1<0.8, it is determined that the homeostasis of the artificial Haloxylon ammodendron forest has collapsed and entered the stage of irreversible degradation.

[0036] In some embodiments of the present invention, selecting a corresponding repair method to perform intelligent repair according to the classification result in S102 can be implemented through S102a to S102d, which is explained through the following steps.

[0037] S102a: When the concentration is at level one, the nitrogen concentration and the carbon concentration in the soil are monitored, and when the monitored nitrogen concentration is greater than a preset first concentration, a slow-release phosphate fertilizer is applied to the soil.

[0038] S102b. When the monitored carbon concentration is greater than a preset second concentration, nitrogen source is added to the soil and organic carbon is applied.

[0039] In some embodiments of the present invention, when the degradation level of an artificial Haloxylon ammodendron forest reaches level one, the nitrogen and carbon concentrations in the soil corresponding to the artificial Haloxylon ammodendron forest are monitored. A first concentration is set at 12 mg / kg, and a second concentration is set at 25 mg / kg. When the nitrogen concentration exceeds 12 mg / kg, phosphorus limitation is determined, and a slow-release phosphate fertilizer is applied to the soil. When the carbon concentration exceeds 25 mg / kg, a nitrogen source is supplemented to the soil, along with organic carbon.

[0040] S102c. When it is level 2, apply a controlled-release fertilizer composed of nitrogen, phosphorus and potassium to the soil.

[0041] S102d. When it is the third level, if the carbon concentration of the assimilated branches of the artificial Haloxylon ammodendron forest is greater than the preset third concentration, the artificial Haloxylon ammodendron forest is intelligently repaired based on a combined repair method of thinning, mycorrhizal inoculation and biochar soil improvement.

[0042] In some embodiments of the present invention, biochar soil amendment refers to the process of adding biochar to soil to improve soil properties, increase soil fertility, and promote plant growth. When the degradation level of an artificial Haloxylon ammodendron forest reaches level two, a controlled-release fertilizer (N-P₂O₅-K₂O = 18-22-5) is applied at a rate of ≤30 kg / hectare. When the degradation level of an artificial Haloxylon ammodendron forest reaches level three, the carbon concentration of its assimilating branches is further determined, and a third concentration of 35 mg / kg may be set. If the carbon concentration exceeds 35 mg / kg, the artificial Haloxylon ammodendron forest is repaired through a combination of thinning, mycorrhizal inoculation, and biochar soil amendment.

[0043] In some embodiments of the present invention, S102d can be implemented through S401, which is explained through the following steps.

[0044] S401. Arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria are mixed in a preset ratio to obtain a composite microbial agent, and the Haloxylon ammodendron forest is intelligently repaired through a combination of the composite microbial agent, thinning, and biochar soil improvement.

[0045] In some embodiments of the present invention, a composite inoculant is prepared by combining arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria in a 3:1 ratio. This inoculant is then intelligently restored in a third-degree degraded artificial Haloxylon ammodendron forest by spraying the composite inoculant, thinning other artificial Haloxylon ammodendron forests, and amending the soil with biochar.

[0046] In some embodiments of the present invention, S401 can be implemented through S4011 to S4012, which is explained through the following steps.

[0047] S4011. Calculate thinning intensity based on the first internal stability index and the thinning intensity formula.

[0048] S4012. Intelligent restoration of artificial Haloxylon ammodendron forests based on thinning intensity, composite bacterial agents and biochar soil improvement.

[0049] In some embodiments of the present invention, a thinning intensity formula is proposed as follows: Thinning intensity = (0.8 − H1) / 0.8 × 100% For example, when the first homeostasis index is 0.6, the calculated thinning intensity is 25%, which means that 25% of the total standing stock or number of trees in the forest will be removed during forest thinning. In other words, a quarter of the trees in the existing Haloxylon ammodendron plantation will be selectively cut down to reduce the stand density, promote the growth and health of the remaining trees, and improve the environmental conditions within the forest.

[0050] Among them, the thinning intensity formula is obtained by fusing the ResNet18 model with multispectral UAV data.

[0051] Furthermore, after calculating the thinning intensity, a part of the existing artificial Haloxylon ammodendron forest is automatically and selectively cut down, and the artificial Haloxylon ammodendron forest with the third degree of degradation is automatically sprayed with a compound bacterial agent, and intelligent restoration is carried out in combination with biochar soil improvement.

[0052] Example 1: 1. Degraded Haloxylon ammodendron plantations aged 2, 15, and 35 years were selected in the Minqin Oasis. Assimilated branch carbon (C) values ​​were 28.5, 36.2, and 42.7, respectively, and soil nitrogen (N) values ​​were 10.3, 14.5, and 18.6, respectively. The 15-year-old stand was determined to be phosphorus-limited (N > 12), and a slow-release phosphate fertilizer was applied at 40 kg / hectare. The 35-year-old stand, with C > 35 and H1 = 0.65, was thinned to 700 trees / hectare, resulting in a 22% increase in survival rate the following year.

[0053] 2. Select 25-year-old degraded Haloxylon ammodendron forest in Minqin Oasis (H1=0.72): The thinning intensity was calculated using the formula: (0.8−0.72) / 0.8×100%=10%, removing 120 plants / ha; After inoculation with a composite fungus agent, the P content in assimilated branches increased by 38% the following year; After restoration, the internal stability value returned to 0.85, and the stand coverage increased by 19%.

[0054] Reference Figure 2 , shows a schematic structural diagram of an electronic device according to an embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the electronic device.

[0055] like Figure 2 As shown, the electronic device may include: a processor (processor) 502, a communications interface (Communications Interface 504), a memory (memory) 506, and a communication bus 508.

[0056] in: The processor 502 , the communication interface 504 , and the memory 506 communicate with each other via a communication bus 508 .

[0057] The communication interface 504 is used to communicate with other electronic devices or servers.

[0058] The processor 502 is configured to execute the program 510 , and specifically may execute the relevant steps in the above method embodiment.

[0059] Specifically, the program 510 may include program codes, which include computer operation instructions.

[0060] Processor 502 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. The one or more processors included in a smart device may be of the same type, such as one or more CPUs, or different types, such as one or more CPUs and one or more ASICs.

[0061] The memory 506 is used to store the program 510. The memory 506 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk storage.

[0062] The program 510 may be specifically configured to enable the processor 502 to execute operations corresponding to the methods described in the above method embodiments.

[0063] The specific implementation of each step in program 510 can be found in the corresponding descriptions of the corresponding steps and units in the above-mentioned method embodiments, and will not be repeated here. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the above-mentioned devices and modules can refer to the corresponding process descriptions in the above-mentioned method embodiments, and will not be repeated here.

[0064] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present invention can be split into more components / steps, or two or more components / steps or partial operations of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of the present invention.

[0065] The methods according to the embodiments of the present invention described above can be implemented in hardware, firmware, or as software or computer code that can be stored on a recording medium (such as a CD ROM, RAM, floppy disk, hard disk, or magneto-optical disk), or as computer code originally stored on a remote recording medium or non-transitory machine-readable medium downloaded over a network and then stored on a local recording medium. Thus, the methods described herein can be processed by such software stored on a recording medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware (such as an ASIC or FPGA). It will be understood that a computer, processor, microprocessor controller, or programmable hardware includes a storage component (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods described herein are implemented. Furthermore, when a general-purpose computer accesses the code for implementing the methods described herein, the execution of the code transforms the general-purpose computer into a dedicated computer for performing the methods described herein.

[0066] Those skilled in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present invention.

[0067] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.

Claims

1. A method for early warning and restoration of Haloxylon ammodendron forest degradation based on stoichiometric homeostasis, characterized in that: include: Obtaining the linear decay equation and exponential decay equation corresponding to the constructed artificial Haloxylon ammodendron forest; and calculating a first homeostasis index of the artificial Haloxylon ammodendron forest according to the linear decay equation, the exponential decay equation, and the age of the artificial Haloxylon ammodendron forest; Based on the first homeostasis index and a preset warning threshold, the degradation of the artificial Haloxylon ammodendron forest is graded to obtain a grading result; and a corresponding repair method is selected according to the grading result to perform intelligent repair.

2. The method according to claim 1, characterized in that Before obtaining the linear attenuation equation and the exponential attenuation equation corresponding to the constructed artificial Haloxylon ammodendron forest, the method further includes: obtaining first data of carbon, nitrogen and phosphorus contents of artificial Haloxylon ammodendron forest samples of different forest ages, and second data of carbon, nitrogen and phosphorus contents of soil; The second homeostasis index corresponding to each of the artificial Haloxylon ammodendron forest samples is calculated based on the first data, the second data and the homeostasis index formula, and the linear attenuation equation and the exponential attenuation equation are constructed based on the second homeostasis index.

3. The method according to claim 1, characterized in that The preset warning threshold includes a first warning threshold and a second warning threshold, and the second warning threshold is greater than the first warning threshold; The step of performing early warning classification on the degradation of the artificial Haloxylon ammodendron forest based on the first homeostasis index and a preset early warning threshold to obtain a classification result includes: When the first homeostasis index is not less than a second warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level one; When the first internal stability index is not less than the first warning threshold and less than the second warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level two; and when the first internal stability index is less than the first warning threshold, the degradation degree of the artificial Haloxylon ammodendron forest is level three.

4. The method according to claim 3, characterized in that The intelligent repairing step of selecting a corresponding repair method according to the classification result includes: When the concentration is the first level, the nitrogen concentration and the carbon concentration in the soil are monitored, and when the nitrogen concentration is greater than a preset first concentration, a slow-release phosphate fertilizer is applied to the soil; When the carbon concentration is monitored to be greater than a preset second concentration, supplementing the soil with a nitrogen source and applying organic carbon; When it is the second level, applying a controlled-release fertilizer composed of nitrogen, phosphorus and potassium to the soil; When it is the third level, if the carbon concentration of the assimilated branches of the artificial Haloxylon ammodendron forest is greater than the preset third concentration, the artificial Haloxylon ammodendron forest is intelligently repaired based on a combined repair method of thinning, mycorrhizal inoculation and biochar soil improvement.

5. The method according to claim 4, characterized in that The intelligent restoration of the artificial Haloxylon ammodendron forest based on the combined restoration method of thinning, mycorrhizal inoculation and biochar soil improvement includes: Arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria are mixed in a preset ratio to obtain a composite bacterial agent, and the artificial Haloxylon ammodendron forest is intelligently repaired through a combined restoration method of the composite bacterial agent, thinning, and biochar soil improvement.

6. The method according to claim 5, characterized in that The intelligent restoration of the artificial Haloxylon ammodendron forest by the combined restoration method of the composite microbial agent, thinning and biochar soil improvement comprises: Calculating thinning intensity based on the first internal stability index and the thinning intensity formula; The artificial Haloxylon ammodendron forest is intelligently repaired based on the thinning intensity, the composite bacterial agent and the biochar soil improvement.

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