Hydraulic safety estimation method and device based on tree morphological structure parameters, medium and product
By acquiring data such as tree height, branch height, and diameter at breast height, the morphological structure index I is calculated, and the hydraulic safety index P50 is estimated using an empirical model. This solves the problems of high cost and long cycle of traditional methods, and realizes a simple and low-cost hydraulic safety assessment, which is suitable for dynamic monitoring and management of large-scale forest communities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-03-13
AI Technical Summary
Traditional methods for determining hydraulic safety require expensive equipment and complex experimental procedures, and have long testing cycles, making them unsuitable for large-sample surveys and failing to meet the needs of rapid assessment and dynamic management of forest ecosystems.
By acquiring conventional forestry measurement data such as tree height, branch height, and diameter at breast height, the morphological structure index I is calculated, and the hydraulic safety index P50 is estimated using an empirical model, enabling rapid assessment without the need for experimental instruments.
It simplifies the hydraulic safety assessment process, reduces costs, is applicable to high-throughput monitoring of large-scale forest communities, and provides a scientific basis for plantation management.
Smart Images
Figure CN121658752A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the fields of ecology and forest management technology, and in particular to a method, device, medium and product for estimating hydraulic safety based on tree morphological and structural parameters. Background Technology
[0002] Hydraulic safety (P50, the water potential at which xylem hydraulic conductivity decreases by 50%) is an important physiological parameter reflecting a plant's drought resistance and water stress response. Traditional methods for measuring P50 include centrifugation, pressure chamber methods, and gas flow rate methods. While these methods are accurate, they have the following drawbacks: 1) they require expensive equipment and complex experimental procedures; 2) they have long measurement cycles, making them unsuitable for large-scale surveys. Therefore, there is an urgent need for a simple, economical, and scalable method for estimating hydraulic safety to enable rapid assessment and dynamic management of drought risk in forest ecosystems. Summary of the Invention
[0003] The purpose of this application is to provide a method, device, medium and product for estimating hydraulic safety based on tree morphological and structural parameters, which can estimate hydraulic safety characteristics without experimental instruments, based solely on conventional forestry measurement data.
[0004] To achieve the above objectives, this application provides the following solution: Firstly, this application provides a method for estimating hydraulic safety based on tree morphological and structural parameters, including: Acquire data of the tree to be tested; the data of the tree to be tested includes: tree height, height below branch, and diameter at breast height; According to the formula Calculate the morphological structure indices of the tree data to be tested; wherein, I Indicators representing morphological structure. H Indicates tree height, CBH Indicates that the lower part of the branch is high. DBH Indicates diameter at breast height; Substituting the morphological structure indicators into the empirical model, the hydraulic safety indicators of the tree data to be tested are obtained.
[0005] Optionally, the empirical model is: ; P50 represents the hydraulic safety index. and b Indicates model parameters.
[0006] Optionally, model parameters and b It is determined by regression analysis of measured data and can be corrected for different tree species, communities, or ecological zones.
[0007] Optionally, =-0.17, b =-3.3.
[0008] Optionally, after substituting the morphological structure indicators into the empirical model to obtain the hydraulic safety indicators of the tree data to be tested, the method further includes: Obtain data on the trees to be tested from several representative sample trees in the target forest; Based on the data of the trees to be tested for each representative sample tree, hydraulic safety indicators are calculated to obtain several hydraulic safety indicators for the target forest. Based on several hydraulic safety indicators of the target forest, the drought resistance and structural rationality of the target forest are evaluated, and the evaluation results are obtained.
[0009] Optionally, based on the hydraulic safety index of the target forest, the drought resistance and structural rationality of the target forest are assessed, and after obtaining the assessment results, the following steps are also taken: to formulate corresponding target forest management measures based on the assessment results.
[0010] Optionally, the drought resistance and structural rationality of the target forest are assessed based on several hydraulic safety indicators to obtain assessment results, specifically including: Based on the distribution of several hydraulic safety indicators of the target forest, the impact of different densities, pruning or thinning treatments on the hydraulic safety of the forest stand was assessed.
[0011] In a second aspect, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the hydraulic safety estimation method based on tree morphological and structural parameters as described above.
[0012] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the hydraulic safety estimation method based on tree morphological and structural parameters as described above.
[0013] Fourthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the hydraulic safety estimation method based on tree morphological and structural parameters as described above.
[0014] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides a method, device, medium, and product for estimating hydraulic safety based on tree morphological and structural parameters. The method includes: acquiring data of the tree to be measured; the data of the tree to be measured includes: tree height, height below branch, and diameter at breast height (DBH); and applying the formula... Calculate the morphological structure indices of the tree data to be tested; wherein, I Indicators representing morphological structure. H Indicates tree height, CBH Indicates that the lower part of the branch is high. DBH The diameter at breast height (DBH) is used to represent the morphological structure index. Substituting this morphological structure index into an empirical model yields the hydraulic safety index of the tree data under test. This application reveals for the first time the quantitative relationship between tree morphology and hydraulic vulnerability. Compared with existing technologies, this application does not require experimental instruments; hydraulic characteristics can be estimated using only conventional forestry measurement data, providing a scientific basis for pruning, density control, and drought resistance management of plantations. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is an application environment diagram of a hydraulic safety estimation method based on tree morphological and structural parameters in one embodiment of this application.
[0017] Figure 2 This is a flowchart illustrating a method for estimating hydraulic safety based on tree morphological and structural parameters, provided as an embodiment of this application.
[0018] Figure 3 This is a schematic diagram illustrating the correlation between the morphological hydraulic index (I) and P50 in a Qinghai spruce plot in the Qilian Mountains, as provided in an embodiment of this application.
[0019] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] Hydraulic safety (P50, the water potential at which xylem hydraulic conductivity decreases by 50%) is an important physiological parameter reflecting a plant's drought resistance and water stress response. Traditional methods for determining P50 include centrifugation, pressure chamber methods, and gas flow rate methods. While these methods are accurate, they have the following drawbacks: 1) they require expensive equipment and complex experimental procedures; 2) they have long measurement cycles, making them unsuitable for large-scale surveys; and 3) they have limited applicability to field ecological monitoring and plantation management.
[0022] This application proposes a method for estimating hydraulic safety based on tree morphological and structural parameters. By measuring tree height (H), branch height (CBH), and diameter at breast height (DBH), the index CBH / (H) is calculated. The method utilizes the statistical relationship between the DBH (Dry Safety Index) and the P50 (Hydraulic Safety Index) to quickly and easily assess the hydraulic safety of trees. This method requires no complex experimental equipment, is simple to operate, low in cost, and widely applicable, making it particularly suitable for forest moisture monitoring, drought resistance assessment of plantations, and structural optimization management.
[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] The hydraulic safety estimation method based on tree morphological and structural parameters provided in this application can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. The data storage system can be set up independently, integrated into server 104, or placed in the cloud or on another server.
[0025] The terminal 102 can be, but is not limited to, various desktop computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, and smart in-vehicle devices. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices. The server 104 can be implemented using a standalone server or a server cluster composed of multiple servers, or it can be a cloud server.
[0026] In one exemplary embodiment, such as Figure 2 As shown, a method for estimating hydraulic safety based on tree morphological and structural parameters is provided. This method is executed by a computer device, specifically a terminal or server, or both. In this embodiment, the method is applied to... Figure 1 Taking server 104 as an example, the explanation includes the following steps S1 to S3. Wherein: S1. Obtain data of the tree to be tested; the data of the tree to be tested includes: tree height, height below the branch, and diameter at breast height.
[0027] S2, according to the formula Calculate the morphological structure indices of the tree data to be tested. Among them, I Indicators representing morphological structure. H Indicates tree height, CBH Indicates that the lower part of the branch is high. DBH Indicates diameter at breast height (DBH).
[0028] index I It showed a significant negative correlation with the tree's P50 (the water potential corresponding to a 50% decrease in xylem hydraulic conductivity). This relationship reflects the comprehensive regulatory effect of tree morphology on the length of water transport pathways and hydraulic risk. I Larger trees have longer, branchless trunks and thinner diameters at breast height (DBH), resulting in longer water transport paths. To maintain stable water transport, trees often possess stronger resistance to vaporization, thus reducing the risk of cavitation, resulting in a more negative P50 and higher hydraulic safety.
[0029] S3. Substitute the morphological structure index into the empirical model to obtain the hydraulic safety index of the tree data to be tested.
[0030] The empirical model is as follows: ; P50 represents the hydraulic safety index. and b Represents model parameters. and b Determined by regression analysis of measured data, it can be corrected for different tree species, communities, or ecological zone types. In this embodiment, the model parameters can take the following values: =-0.17, b =-3.3.
[0031] This embodiment can also be specifically applied to the assessment of natural forests, and the specific steps are as follows: Obtain data on the trees to be tested from several representative sample trees in the target forest.
[0032] Based on the data of the trees to be tested for each representative sample tree, hydraulic safety indicators are calculated to obtain several hydraulic safety indicators for the target forest.
[0033] Based on several hydraulic safety indicators of the target forest, the drought resistance and structural rationality of the target forest are evaluated, and the evaluation results are obtained.
[0034] Based on the assessment results, corresponding target forest management measures will be formulated.
[0035] Compared with the prior art, this embodiment has the following advantages: 1) Simple operation and low cost: No experimental instruments are required; hydraulic characteristics can be estimated based solely on conventional forestry measurement data. 2) High-throughput applications: suitable for large-scale forest communities and long-term dynamic monitoring; 3) Combining physiology and structure: For the first time, a quantitative relationship between tree morphology and hydraulic vulnerability has been revealed; 4) High ecological management value: It provides a scientific basis for pruning, density control and drought resistance management of artificial forests.
[0036] As a specific implementation method, the method of this embodiment is applied to natural spruce forests in Qinghai, such as... Figure 3 As shown, in the Qilian Mountains, Qinghai spruce ( Picea crassifolia In a natural forest plot (Kom.), 18 sample trees were randomly selected, and their H, CBH, DBH, and P50 were measured. The results demonstrated the effectiveness of the spectroscopic hydraulic index. It shows a significant negative correlation with P50. Figure 3 In the middle, the horizontal axis represents the shape hydraulic index. I The vertical axis represents P50 (MPa); the points represent sample tree data; the solid line represents the fitted line of the linear regression model.
[0037] In this embodiment, index I is applicable to coniferous communities, especially to the hydraulic safety assessment of Qinghai spruce forests in the Qilian Mountains. The impact of different densities, pruning, or thinning treatments on the hydraulic safety of the forest stand is assessed based on the distribution of stand I values.
[0038] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 4 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When executed by the processor, the computer program implements a hydraulic safety estimation method based on tree morphological and structural parameters.
[0039] Those skilled in the art will understand that Figure 4The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0040] In one exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.
[0041] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.
[0042] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.
[0043] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.
[0044] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).
[0045] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A method for estimating hydraulic safety based on tree morphological and structural parameters, characterized in that, include: Obtain data on the trees to be tested; The data of the trees to be measured include: tree height, height below the branch, and diameter at breast height; According to the formula Calculate the morphological structure indices of the tree data to be tested; wherein, I Indicators representing morphological structure. H Indicates tree height, CBH Indicates that the lower part of the branch is high. DBH Indicates diameter at breast height; Substituting the morphological structure indicators into the empirical model, the hydraulic safety indicators of the tree data to be tested are obtained.
2. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 1, characterized in that, The empirical model is as follows: ； P50 represents the hydraulic safety index. and b Indicates model parameters.
3. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 2, characterized in that, Model parameters and b It is determined by regression analysis of measured data and can be corrected for different tree species, communities, or ecological zones.
4. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 2, characterized in that, =-0.17， b =-3.3。 5. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 1, characterized in that, After substituting the morphological structure indicators into the empirical model to obtain the hydraulic safety indicators of the tree data to be tested, the method further includes: Obtain data on the trees to be tested from several representative sample trees in the target forest; Based on the data of the trees to be tested for each representative sample tree, hydraulic safety indicators are calculated to obtain several hydraulic safety indicators for the target forest. Based on several hydraulic safety indicators of the target forest, the drought resistance and structural rationality of the target forest are evaluated, and the evaluation results are obtained.
6. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 5, characterized in that, Based on the hydraulic safety index of the target forest, the drought resistance and structural rationality of the target forest are assessed. After obtaining the assessment results, the following steps are also taken: to formulate corresponding management measures for the target forest based on the assessment results.
7. The hydraulic safety estimation method based on tree morphological and structural parameters according to claim 5, characterized in that, Based on several hydraulic safety indicators of the target forest, the drought resistance and structural rationality of the target forest are evaluated, and the evaluation results are obtained, specifically including: Based on the distribution of several hydraulic safety indicators of the target forest, the impact of different densities, pruning or thinning treatments on the hydraulic safety of the forest stand was assessed.
8. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that the processor executes the computer program to implement the hydraulic safety estimation method based on tree morphological structural parameters as described in any one of claims 1-7.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the hydraulic safety estimation method based on tree morphological and structural parameters as described in any one of claims 1-7.
10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the hydraulic safety estimation method based on tree morphological and structural parameters as described in any one of claims 1-7.