Reservoir hydro-fluctuation belt ecological restoration priority area identification method, device, equipment and medium

Abstract

The invention relates to the field of ecological restoration, and discloses a reservoir hydro-fluctuation belt ecological restoration priority area identification method, device and equipment and a medium, and the method comprises the steps: determining an ecological function index of a corresponding area based on the elevation information, the lowest flooding level information, the highest flooding level information, the gradient information and the bank slope type information of each area; determining an ecological system degradation index of the corresponding sub-region based on the natural degradation index and the social interference index of each sub-region; determining a water level disturbance index of the corresponding sub-region based on the flooding data, the lowest flooding level information and the highest flooding level information of each sub-region; based on the ecological function index, the ecological system degradation index and the water level disturbance index of each sub-region, the ecological restoration priorities corresponding to the different sub-regions are determined, and the division precision of the restoration priorities is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of ecological restoration technology, specifically to a method, apparatus, equipment, and medium for identifying priority zones for ecological restoration in the drawdown zone of a reservoir. Background Technology

[0002] The drawdown zone of a reservoir is a transitional zone between land and water formed by the periodic rise and fall of water levels. It is characterized by high ecological sensitivity and habitat heterogeneity, and is subject to significant challenges such as soil erosion, vegetation degradation, biodiversity loss, and non-point source pollution due to seasonal water level fluctuations. Most ecological restoration methods in related technologies determine the restoration priority of the reservoir drawdown zone based on static environmental parameters. However, dynamic changes in water level have a complex impact on the reservoir drawdown zone due to factors such as ecosystem function and socio-economic activities. Considering only static environmental parameters to determine the restoration priority of the area leads to inaccurate prioritization and low resource allocation efficiency. Summary of the Invention

[0003] This invention provides a method, apparatus, equipment, and medium for identifying priority zones for ecological restoration in the drawdown zone of a reservoir, in order to solve the problems of inaccurate priority division and low resource allocation efficiency in related technologies that determine the restoration priority of the drawdown zone area by using static environmental parameters.

[0004] In a first aspect, the present invention provides a method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir. The method includes: acquiring elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data for each sub-region, minimum flood level information, and maximum flood level information of the reservoir within the drawdown zone of a target reservoir; determining the ecological function index of the corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region; determining the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and social disturbance index of each sub-region; determining the water level disturbance index of the corresponding sub-region based on the inundation data, minimum flood level information, and maximum flood level information of each sub-region; and determining the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

[0005] The present invention provides a method for identifying priority areas for ecological restoration in reservoir drawdown zones. By introducing a water level disturbance index, it transforms abstract dynamic changes in water level into quantifiable assessment factors. Based on inundation data for each sub-region and information on the minimum and maximum flooded water levels of the reservoir, it accurately captures the combined impact of inundation frequency and water level fluctuations. This allows restoration priority allocation to move beyond static parameters and align with the core ecological characteristics of alternating flooding and dew in drawdown zones. It ensures priority restoration of areas highly susceptible to water level disturbances and with poor ecosystem stability, avoiding the waste of restoration resources in areas with strong resistance to disturbances and no need for urgent intervention. The ecological function index, by integrating key parameters such as elevation, slope, and bank slope type, quantifies the basic potential for regional ecological restoration and clarifies the ecological value achievable after restoration. The ecosystem degradation index, through a weighted superposition of the natural degradation index and the social disturbance index, accurately measures the urgency of the current ecological status of the region. The synergistic effect of the water level disturbance index, ecological function index, and ecosystem degradation index avoids the limitations of single-factor assessment and accurately identifies core restoration areas with high value, high urgency, and high risk. The combination of multi-dimensional collaboration and dynamic quantification ultimately improves the accuracy of restoration priority classification, making the originally vague restoration order clear and definite. It eliminates the situation where it is difficult to distinguish the restoration order of multiple areas, and enables limited funds, time and other resources to be accurately invested in the areas that need the most urgent intervention. It effectively avoids the waste of resources in related technologies that tilt resources towards low-value and low-urgency areas, significantly improves the efficiency and effectiveness of ecological restoration, and provides a scientific and feasible decision-making basis for the planning of ecological restoration of reservoir drawdown zones.

[0006] In one optional implementation, the step of determining the ecological function index of a corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region includes: determining the basic ecological function index of the corresponding sub-region based on the elevation information, minimum flood level information, and maximum flood level information of each sub-region; and correcting the basic ecological function index based on the slope information and bank slope type information of each sub-region to obtain the ecological function index of the corresponding sub-region.

[0007] In one optional implementation, the step of determining the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region includes: determining the comprehensive score of the corresponding sub-region based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region; and determining the ecological restoration priority of different sub-regions based on the comprehensive scores of multiple sub-regions.

[0008] In one optional implementation, the step of determining the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region includes: determining the ecological function level of the corresponding region based on the ecological function index of each sub-region; determining the ecosystem degradation level of the corresponding sub-region based on the ecosystem degradation index of each sub-region; determining the water level disturbance level of the corresponding sub-region based on the water level disturbance index of each sub-region; and determining the ecological restoration priority corresponding to different sub-regions based on the ecological function level, ecosystem degradation level, and water level disturbance level of each sub-region.

[0009] In one optional implementation, the step of determining the water level disturbance index of the corresponding sub-region based on the inundation data, the lowest flood level information, and the highest flood level information of each sub-region includes: determining water level fluctuation data based on the lowest flood level information and the highest flood level information; and determining the water level disturbance index of the corresponding sub-region based on the water level fluctuation data and the inundation data of each sub-region.

[0010] In one optional implementation, multiple sub-regions within the target reservoir drawdown zone are determined by the following steps: using the lowest and highest flood levels of the reservoir as boundaries, the target reservoir drawdown zone is divided into multiple continuous sub-regions according to a preset elevation gradient.

[0011] Secondly, the present invention provides a device for identifying priority areas for ecological restoration in the drawdown zone of a reservoir. The device includes: acquiring elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data for each sub-region, minimum flood level information, and maximum flood level information of the reservoir within the drawdown zone of a target reservoir; determining the ecological function index of the corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region; determining the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and social disturbance index of each sub-region; determining the water level disturbance index of the corresponding sub-region based on the inundation data, minimum flood level information, and maximum flood level information of each sub-region; and determining the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

[0012] Thirdly, the present invention provides an electronic device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the method for identifying priority areas for ecological restoration of reservoir drawdown zones as described in the first aspect or any corresponding embodiment.

[0013] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the method for identifying priority areas for ecological restoration of reservoir drawdown zones as described in the first aspect or any corresponding embodiment.

[0014] Fifthly, the present invention provides a computer program product, including computer instructions, which are used to cause a computer to execute the method for identifying priority areas for ecological restoration of reservoir drawdown zones as described in the first aspect or any corresponding embodiment. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an application scenario according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the first process of the method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the second process of the method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the third process of the method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention; Figure 5 This is a structural block diagram of a reservoir drawdown zone ecological restoration priority area identification device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] As an optional application scenario of this invention, the specific application environment architecture or specific hardware architecture on which the method for identifying priority areas for ecological restoration of reservoir drawdown zones depends is described here. For example... Figure 1 As shown, the architecture system may include at least one terminal device and at least one server. Figure 1 The system is illustrated in the example, which includes a computer 101, a mobile terminal 102, and a server 103, and the terminal devices such as the computer 101 and the mobile terminal 102 are connected to the server 103 through a network 110.

[0021] Specifically, the terminal device can be a smartphone, tablet, laptop, PDA, desktop computer, game console, smart TV, smart wearable device, in-vehicle terminal, VR (Virtual Reality) device, AR (Augmented Reality) device, etc. Server 103 can be a standalone physical server, a server cluster, a distributed system, or a cloud server providing cloud services. Network 110 can be a wired or wireless network, examples of which include, but are not limited to, the Internet, corporate intranet, local area network, wide area network, mobile communication network, and combinations thereof.

[0022] The drawdown zone of a reservoir is a transitional zone between land and water formed by the periodic rise and fall of water levels. It is characterized by high ecological sensitivity and habitat heterogeneity, and is subject to significant challenges such as soil erosion, vegetation degradation, biodiversity loss, and non-point source pollution due to seasonal water level fluctuations. Most ecological restoration methods in related technologies determine the restoration priority of the reservoir drawdown zone based on static environmental parameters. However, dynamic changes in water level have a complex impact on the reservoir drawdown zone due to factors such as ecosystem function and socio-economic activities. Considering only static environmental parameters to determine the restoration priority of the area leads to inaccurate prioritization and low resource allocation efficiency.

[0023] In view of this, the present invention provides a method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir. This method can be applied to a single server to identify priority areas for ecological restoration in the drawdown zone. The method provided in this application introduces a water level disturbance index, transforming abstract dynamic changes in water level into quantifiable evaluation factors. Based on inundation data for each sub-region and information on the lowest and highest flooded water levels of the reservoir, it accurately captures the combined influence of inundation frequency and water level fluctuations. This allows the prioritization of restoration to no longer be limited to static parameters, but rather to align with the core ecological characteristics of alternating flooding and dew in the drawdown zone. This ensures priority restoration of areas with strong water level disturbances and poor ecosystem stability, avoiding the waste of restoration resources in areas with strong resistance to disturbance and no need for urgent intervention. The ecological function index, by integrating key parameters such as elevation, slope, and bank slope type, quantifies the basic potential for regional ecological restoration and clarifies the ecological value achievable after restoration. The ecosystem degradation index, through a weighted superposition of the natural degradation index and the social disturbance index, accurately measures the urgency of the current ecological status of the region. The synergistic effect of the water level disturbance index, ecological function index, and ecosystem degradation index avoids the limitations of single-factor assessment and accurately identifies core restoration areas with high value, high urgency, and high risk. This multi-dimensional synergy combined with dynamic quantification directly improves the accuracy of restoration priority classification, making previously ambiguous restoration sequences clear and precise. It eliminates situations where multiple areas are difficult to prioritize, allowing limited resources such as funds and time to be precisely allocated to areas most in need of urgent intervention. This effectively avoids the waste of resources that tend to be allocated to low-value, low-urgency areas in related technologies, significantly improving the efficiency and effectiveness of ecological restoration and providing a scientific and feasible decision-making basis for ecological restoration planning in reservoir drawdown zones.

[0024] According to an embodiment of the present invention, an embodiment of a method for identifying priority areas for ecological restoration of reservoir drawdown zones is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0025] This embodiment provides a method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, which can be used in the aforementioned server. Figure 2 This is a flowchart of a method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps: Step S201: Obtain elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data of each sub-region, minimum flood level information of the reservoir, and maximum flood level information of the reservoir in multiple sub-regions within the drawdown zone of the target reservoir.

[0026] For example, the target reservoir drawdown zone is divided into multiple sub-regions based on the reservoir's lowest and highest flood levels, according to a preset elevation gradient. The elevation information of each sub-region is used to characterize the overall elevation features within that sub-region.

[0027] Step S202: Determine the ecological function index of the corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region.

[0028] For example, the ecological function index is a comprehensive quantitative indicator used to quantify the basic potential for ecological restoration and the actual ecological function adaptability of each sub-region in the drawdown zone of a reservoir. Its core function is to objectively assess the ecological value and restoration feasibility of each sub-region by integrating key environmental parameters, and to provide the core basis for determining the regional ecological value for subsequent ecological restoration priorities.

[0029] Step S203: Determine the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and social disturbance index of each sub-region.

[0030] For example, the core data source and quantification basis of the natural degradation index comes from the Normalized Difference Vegetation Index (NDVI). The vegetation cover and growth status reflected by NDVI directly characterizes the degree of natural degradation of the ecosystem. The Normalized Difference Vegetation Index (NDVI) is a core index in remote sensing technology specifically used to measure surface vegetation cover and vegetation vigor. Its value range is typically [-1, 1]. In this embodiment, NDVI only focuses on the effective interval [0, 1], excluding areas without vegetation such as water bodies and bare rocks. The social disturbance index is calculated based on the distance between the sub-region and the main road or settlement. When the distance is less than 100m, the disturbance index is 1; when the distance is 100-300m, the disturbance index is 0.6; when the distance is 300m-500m, the disturbance index is 0.3; and when the distance is greater than 500m, the disturbance index is 0. The ecosystem degradation index is obtained by weighting and superimposing the natural degradation index and the social disturbance index with weights of 0.7 and 0.3, respectively.

[0031] Step S204: Determine the water level disturbance index of the corresponding sub-region based on the inundation data, minimum flood level information and maximum flood level information of each sub-region.

[0032] For example, in this embodiment of the application, the inundation data includes the "multi-year average number of inundation days", the minimum flood level (MiWL), and the maximum flood level (MWL) for each sub-region. The flood level is the core water level boundary for reservoir operation and can reflect the "spatial intensity" of water level disturbance. The larger the water level difference, the more significant the water level difference between the impoundment and release periods in the sub-region, resulting in stronger erosion of the drawdown zone slopes and soaking impact on vegetation roots, and higher physical intensity of the disturbance. The water level disturbance index calculated using these three parameters can reflect how strongly the sub-region is affected by water level fluctuations.

[0033] Step S205: Determine the ecological restoration priority for each sub-region based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

[0034] For example, a higher ecological function index indicates stronger regional ecological potential and higher ecological value achievable after restoration, serving as the value basis for prioritization; a higher ecosystem degradation index indicates more severe current ecological damage and a greater likelihood of ecosystem collapse, serving as the basis for prioritization urgency; and a higher water level disturbance index indicates greater susceptibility to water level fluctuations and a greater likelihood of damage to restoration achievements, serving as a risk constraint for prioritization. By combining these three indices, the urgency of restoration and the priority of resource allocation for each sub-region can be clearly defined, ensuring that limited funds, time, and other resources are precisely allocated to the most deserving areas for restoration, avoiding resource waste, and improving the overall efficiency and effectiveness of ecological restoration.

[0035] The method for identifying priority areas for ecological restoration in reservoir drawdown zones provided in this embodiment introduces a water level disturbance index, transforming abstract dynamic changes in water level into quantifiable assessment factors. Based on inundation data for each sub-region and information on the reservoir's minimum and maximum flood levels, it accurately captures the combined impact of inundation frequency and water level fluctuations. This allows restoration priority allocation to move beyond static parameters and align with the core ecological characteristics of alternating flooding and dew in drawdown zones, ensuring priority restoration of areas highly susceptible to water level disturbances and with poor ecosystem stability. This avoids wasting restoration resources in areas with strong resilience and no need for urgent intervention. The ecological function index, by integrating key parameters such as elevation, slope, and bank slope type, quantifies the basic potential for regional ecological restoration and clarifies the ecological value achievable after restoration. The ecosystem degradation index, through a weighted superposition of the natural degradation index and the social disturbance index, accurately measures the urgency of the current ecological status of the region. The synergistic effect of the water level disturbance index, ecological function index, and ecosystem degradation index avoids the limitations of single-factor assessment and accurately identifies core restoration areas with high value, high urgency, and high risk. The combination of multi-dimensional collaboration and dynamic quantification ultimately improves the accuracy of restoration priority classification, making the originally vague restoration order clear and definite. It eliminates the situation where it is difficult to distinguish the restoration order of multiple areas, and enables limited funds, time and other resources to be accurately invested in the areas that need the most urgent intervention. It effectively avoids the waste of resources in related technologies that tilt resources towards low-value and low-urgency areas, significantly improves the efficiency and effectiveness of ecological restoration, and provides a scientific and feasible decision-making basis for the planning of ecological restoration of reservoir drawdown zones.

[0036] This embodiment provides a method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, which can be used in the aforementioned server. Figure 3 This is a flowchart of a method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps: Step S301: Obtain elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data for each sub-region within the target reservoir's drawdown zone, as well as the reservoir's minimum and maximum inundation levels. For details, please refer to [link to relevant documentation]. Figure 1 Step S101 of the illustrated embodiment will not be described again here.

[0037] Step S302: Determine the ecological function index of the corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region.

[0038] Specifically, step S302 includes: Step S3021: Determine the basic ecological function index of the corresponding sub-region based on the elevation information, minimum flood level information and maximum flood level information of each sub-region.

[0039] For example, in this embodiment of the application, the basic ecological function index can be calculated by the following formula:

[0040] in, This represents the basic index of ecological function, ranging from (0,1); Indicates elevation information, This indicates the lowest flood level. This indicates the highest flood level.

[0041] Step S3022: Based on the slope information and bank slope type information of each sub-region, the basic ecological function index is corrected to obtain the ecological function index of the corresponding sub-region.

[0042] For example, in the embodiments of this application, when correcting the basic ecological function index, if the slope is >25°, the index is reduced by 30% and if the slope is <25°, the index is increased by 30%; if the bank slope type is rock, the index is reduced by 0.2 and if the bank slope type is soil, the index is increased by 0.3, with a maximum value of 1.0.

[0043] Step S303: Determine the ecosystem degradation index of each sub-region based on the natural degradation index and the social disturbance index. For details, please refer to [link to relevant documentation]. Figure 1 Step S203 of the illustrated embodiment will not be described again here.

[0044] Step S304: Determine the water level disturbance index for each sub-region based on the inundation data, minimum floodwater level information, and maximum floodwater level information for each sub-region. For details, please refer to [link to relevant documentation]. Figure 1 Step S204 of the illustrated embodiment will not be described again here.

[0045] Step S305: Determine the ecological restoration priority for each sub-region based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

[0046] Specifically, step S305 includes: Step S3051: Determine the comprehensive score of each sub-region by considering the ecological function index, ecosystem degradation index, and water level disturbance index.

[0047] For example, in the embodiments of this application, the ecological function index, the ecosystem degradation index, and the water level disturbance index can be weighted and averaged to obtain a comprehensive score.

[0048] Step S3052: Determine the ecological restoration priority of different sub-regions based on the comprehensive scores of multiple sub-regions.

[0049] For example, in this embodiment of the application, multiple sub-regions can be prioritized according to the comprehensive score of each sub-region.

[0050] This embodiment provides a method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, which can be used in the aforementioned server. Figure 4 This is a flowchart of a method for identifying priority areas for ecological restoration of reservoir drawdown zones according to an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps: Step S401: Obtain elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data for each sub-region within the target reservoir's drawdown zone, as well as the reservoir's minimum and maximum inundation levels. For details, please refer to [link to relevant documentation]. Figure 3 Step S301 of the illustrated embodiment will not be described again here.

[0051] Step S402: Determine the ecological function index of the corresponding region based on the elevation information, minimum flood level information, maximum flood level information, slope information, and bank slope type information of each region.

[0052] Step S403: Determine the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and social disturbance index of each sub-region.

[0053] Step S404: Determine the water level disturbance index of the corresponding sub-region based on the inundation data, minimum flood level information and maximum flood level information of each sub-region.

[0054] Specifically, step S404 includes: Step S4041: Determine water level fluctuation data based on the lowest flood level information and the highest flood level information.

[0055] Step S4042: Determine the water level disturbance index of the corresponding sub-region based on the water level fluctuation data and the inundation data of each sub-region.

[0056] For example, in this embodiment of the application, the water level disturbance index can be calculated by the following formula:

[0057] in, This indicates the water level disturbance index. Indicates the number of days of flooding. This indicates the water level fluctuation data.

[0058] Step S405: Determine the ecological restoration priority for each sub-region based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

[0059] Specifically, step S405 includes: Step S4051: Determine the ecological function level of the corresponding region based on the ecological function index of each sub-region.

[0060] For example, in the embodiments of this application, the index ranges corresponding to the low, medium and high ecological function indices can be [0-0.3), [0.3-0.6), and [0.6-1.0], respectively.

[0061] Step S4052: Determine the ecosystem degradation level of the corresponding sub-region based on the ecosystem degradation index of each sub-region.

[0062] For example, in the embodiments of this application, the index ranges corresponding to the low, medium and high levels of ecosystem degradation index are [0-0.3), [0.3-0.6) and [0.6-1.0], respectively.

[0063] Step S4053: Determine the water level disturbance level of the corresponding sub-region based on the water level disturbance index of each sub-region.

[0064] For example, in the embodiments of this application, the classification of water level disturbance index is based on [0-0.3), [0.3-0.6] and [0.6-1.0], which correspond to low, medium and high water level disturbance, respectively.

[0065] Step S4054: Determine the ecological restoration priority for each sub-region based on its ecological function level, ecosystem degradation level, and water level disturbance level.

[0066] For example, in this embodiment of the application, a three-dimensional matrix of "ecological function-system degradation" is constructed (high / medium / low function × slight / medium / severe degradation × high / medium / low water level disturbance), and the ecological restoration priority determination rules include: L1, the priority area for ecological restoration, mainly includes: high function + severe degradation + high disturbance; high function + severe degradation + moderate disturbance; high function + severe degradation + low disturbance; high function + moderate degradation + high disturbance; medium function + severe degradation + high disturbance, where the ecosystem is on the verge of collapse and requires immediate intervention. L2 is a non-priority area for ecological restoration, with significant ecological risks, and needs to be restored as soon as possible. L3 is not a priority area for ecological restoration, but shows signs of degradation and can be restored in the medium term. L4 is a non-ecological restoration priority area with no obvious ecological problems, and its main focus is on protection and monitoring.

[0067] Examples of judgment matrices are shown in Table 1 below.

[0068] Table 1. Judgment Matrix

[0069] The following is a detailed explanation of the identification of priority areas for ecological restoration of reservoir drawdown zones provided in this application through a specific implementation method.

[0070] Example: Taking the two areas of the target reservoir as examples, the elevation of the flooded area is 145m-175m.

[0071] Area A: 148m above sea level, earthen bank with a slope of 15°, NDVI of 0.35 during the exposure season, no main roads or residential areas within 500m, and an average of 200 days of flooding over the past three years.

[0072] Calculations show that the basic ecological function index is 0.1, and the corrected basic ecological function index is 0.403, corresponding to a medium-level ecological function; the degradation index is 0.245, corresponding to a low level; and the water level disturbance coefficient is 0.603, corresponding to a high level. Based on the judgment matrix, this area is determined not to be a priority area for ecological restoration.

[0073] Area B: Elevation 165m, soil slope, gradient 28, NDVI of 0.78 during the exposure season, a national highway passes within 200m of the area, and the area has been submerged for an average of 40 days in the past three years.

[0074] Calculations show that the basic ecological function index is 0.67, and the revised basic ecological function index is 0.76, corresponding to a high level of ecological function; the degradation index is 0.726, corresponding to a high level; and the water level disturbance coefficient is 0.183, corresponding to a low level. Based on the judgment matrix, this area is determined to be a priority area for ecological restoration.

[0075] The method provided in this application can clearly define the restoration priority order of all areas in the drawdown zone of a reservoir, aiming to maximize and effectively utilize resources within limited funds, time, and key ecological nodes. The method includes dividing the drawdown zone into multiple sub-regions according to elevation gradients; calculating the basic ecological function index of each region based on water level inundation frequency and land use type; calculating the degree of ecosystem degradation in the drawdown zone based on natural degradation and social disturbance indices; introducing a water level disturbance coefficient to construct a three-dimensional matrix of "ecological function-system degradation" to determine the restoration priority matrix; and identifying priority areas for ecological restoration of the reservoir drawdown zone according to priority area determination rules. This invention is applicable to ecological restoration planning of large reservoir drawdown zones and can significantly improve restoration efficiency and ecological restoration effects.

[0076] This embodiment also provides a device for identifying priority areas for ecological restoration in the drawdown zone of a reservoir. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0077] This embodiment provides a device for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, such as... Figure 5 As shown, it includes: The acquisition module 501 is used to acquire elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data of each sub-region, minimum flood level information of the reservoir, and maximum flood level information of the reservoir in multiple sub-regions within the drawdown zone of the target reservoir. The first determining module 502 is used to determine the ecological function index of the corresponding area based on the elevation information, minimum flood level information, maximum flood level information, slope information and bank slope type information of each area. The second determining module 503 is used to determine the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and the social disturbance index of each sub-region; The third determining module 504 is used to determine the water level disturbance index of the corresponding sub-region based on the flooding data, the lowest flood level information and the highest flood level information of each sub-region. The fourth determination module 505 is used to determine the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index and water level disturbance index of each sub-region.

[0078] In some alternative implementations, the first determining module 502 includes: The first determination submodule is used to determine the basic ecological function index of the corresponding sub-region based on the elevation information, minimum flood level information and maximum flood level information of each sub-region. The basic ecological function index is corrected based on the slope and bank slope type information of each sub-region to obtain the ecological function index of the corresponding sub-region.

[0079] In some alternative implementations, the fourth determining module 505 includes: The second determination submodule is used to determine the comprehensive score of each subregion by considering the ecological function index, ecosystem degradation index, and water level disturbance index. The third determination submodule is used to determine the ecological restoration priority of different sub-regions based on the comprehensive score of multiple sub-regions.

[0080] In some optional implementations, the fourth determining module 505 further includes: The fourth determination submodule is used to determine the ecological function level of the corresponding region based on the ecological function index of each sub-region; The fifth determination submodule is used to determine the ecosystem degradation level of the corresponding sub-region based on the ecosystem degradation index of each sub-region; The sixth determination submodule is used to determine the water level disturbance level of the corresponding sub-region based on the water level disturbance index of each sub-region; The seventh sub-module is used to determine the ecological restoration priority for different sub-regions based on their ecological function level, ecosystem degradation level, and water level disturbance level.

[0081] In some alternative implementations, the third determining module 504 includes: The eighth determination submodule is used to determine the water level fluctuation data based on the lowest flood level information and the highest flood level information; The ninth determination submodule is used to determine the water level disturbance index of the corresponding sub-region based on the water level fluctuation data and the inundation data of each sub-region.

[0082] In some alternative implementations, multiple sub-regions within the target reservoir drawdown zone are determined through the following steps: Using the lowest and highest flood levels of the reservoir as boundaries, the target reservoir drawdown zone is divided into multiple continuous sub-regions according to a preset elevation gradient.

[0083] The reservoir drawdown zone ecological restoration priority area identification device provided in this embodiment of the invention can execute the reservoir drawdown zone ecological restoration priority area identification method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the method. Further functional descriptions of the above modules and units are the same as in the corresponding embodiments described above, and will not be repeated here.

[0084] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0085] The following is a detailed reference. Figure 6This diagram illustrates a suitable structural design for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 601, which can perform various appropriate actions and processes based on a program stored in read-only memory (ROM) 602 or a program loaded from memory 608 into random access memory (RAM) 603. RAM 603 also stores various programs and data required for the operation of the electronic device. The processor 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0086] Typically, the following devices can be connected to I / O interface 605: input devices 606 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 607 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 608 including, for example, magnetic tapes, hard disks, etc.; and communication devices 609. Communication device 609 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 6 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0087] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 609, or installed from a memory 608, or installed from a ROM 602. When the computer program is executed by the processor 601, it performs the functions defined in the method for identifying priority areas for ecological restoration of reservoir drawdown zones according to embodiments of the present invention.

[0088] Figure 6 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0089] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the method for identifying priority ecological restoration zones in reservoir drawdown zones shown in the above embodiments is implemented.

[0090] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0091] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, characterized in that, The method includes: Acquire elevation, slope, natural degradation index, social disturbance index, bank slope type, inundation data of each sub-region, minimum flood level of the reservoir, and maximum flood level of the reservoir in multiple sub-regions within the drawdown zone of the target reservoir. The ecological function index of each region is determined based on the elevation information, the lowest flood level information, the highest flood level information, the slope information, and the bank slope type information of each region. The ecosystem degradation index of each sub-region is determined based on the natural degradation index and the social disturbance index of each sub-region; The water level disturbance index of the corresponding sub-region is determined based on the inundation data, the lowest flood level information and the highest flood level information of each sub-region. The ecological restoration priorities for each sub-region are determined based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region.

2. The method according to claim 1, characterized in that, The step of determining the ecological function index of a corresponding region based on the elevation information, the lowest floodwater level information, the highest floodwater level information, the slope information, and the bank slope type information of each region includes: Based on the elevation information, the lowest flood level information, and the highest flood level information of each sub-region, the basic ecological function index of the corresponding sub-region is determined. The ecological function index is corrected based on the slope information and bank slope type information of each sub-region to obtain the ecological function index of the corresponding sub-region.

3. The method according to claim 1 or 2, characterized in that, The step of determining the ecological restoration priority for different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region includes: The ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region are used to determine the comprehensive score of the corresponding sub-region; The ecological restoration priority of different sub-regions is determined based on the comprehensive score of multiple sub-regions.

4. The method according to claim 1, characterized in that, The step of determining the ecological restoration priority for different sub-regions based on the ecological function index, ecosystem degradation index, and water level disturbance index of each sub-region includes: The ecological function level of the corresponding region is determined based on the ecological function index of each sub-region. The ecosystem degradation level of each sub-region is determined based on the ecosystem degradation index of each sub-region; The water level disturbance level of each sub-region is determined based on the water level disturbance index of each sub-region; The ecological restoration priorities for each sub-region are determined based on the ecological function level, the ecosystem degradation level, and the water level disturbance level of each sub-region.

5. The method according to claim 1, characterized in that, The step of determining the water level disturbance index of the corresponding sub-region based on the inundation data, the lowest flood level information, and the highest flood level information of each sub-region includes: The water level fluctuation data is determined based on the lowest flood level information and the highest flood level information. The water level fluctuation index of the corresponding sub-region is determined based on the water level fluctuation data and the inundation data of each sub-region.

6. The method according to claim 1, characterized in that, The multiple sub-regions within the target reservoir drawdown zone were determined through the following steps: Using the lowest and highest flood levels of the reservoir as boundaries, the target reservoir drawdown zone is divided into multiple continuous sub-regions according to a preset elevation gradient.

7. A device for identifying priority areas for ecological restoration in the drawdown zone of a reservoir, characterized in that, The device includes: The acquisition module is used to acquire elevation information, slope information, natural degradation index, social disturbance index, bank slope type information, inundation data of each sub-region, minimum flood level information of the reservoir, and maximum flood level information of the reservoir in multiple sub-regions within the drawdown zone of the target reservoir. The first determining module is used to determine the ecological function index of the corresponding area based on the elevation information, the lowest flood level information, the highest flood level information, the slope information, and the bank slope type information of each area. The second determining module is used to determine the ecosystem degradation index of the corresponding sub-region based on the natural degradation index and the social disturbance index of each sub-region; The third determining module is used to determine the water level disturbance index of the corresponding sub-region based on the flooding data, the lowest flood level information and the highest flood level information of each sub-region. The fourth determining module is used to determine the ecological restoration priority corresponding to different sub-regions based on the ecological function index, ecosystem degradation index and water level disturbance index of each sub-region.

8. An electronic device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the method for identifying priority areas for ecological restoration of the reservoir drawdown zone as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to execute the method for identifying priority areas for ecological restoration of reservoir drawdown zones as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The method includes computer instructions for causing a computer to execute the method for identifying priority areas for ecological restoration of reservoir drawdown zones as described in any one of claims 1 to 6.

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