Method and device for evaluating influence of vegetation construction on watershed hydroelectric generation capacity

Abstract

The invention relates to the technical field of water conservancy and hydropower, and discloses a method and device for evaluating the influence of vegetation construction on watershed hydroelectric generation capacity, and the method comprises the steps: constructing a watershed terrestrial ecosystem water-carbon coupling model; setting a reference scene scheme and a vegetation construction scheme of the target watershed, and simulating watershed runoff processes corresponding to the reference scene scheme and the vegetation construction scheme by using a watershed terrestrial ecosystem water-carbon coupling model to obtain a target watershed runoff variation; obtaining the area of the target basin, and calculating the average water head difference of the target basin based on the runoff variation of the target basin and the area of the target basin; and based on the target basin runoff variation and the target basin average water head difference, determining an influence evaluation result of vegetation construction on the basin hydroelectric generation capacity. The method accurately and comprehensively evaluates the influence of watershed vegetation construction on watershed hydroelectric power generation capacity, and provides support for watershed clean energy production management and decision and vegetation construction planning.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydropower, and in particular to a method and a device for evaluating the impact of vegetation construction on the amount of hydropower generated in a river basin. Background Art

[0002] The impact of vegetation construction on basin runoff changes is reflected in flood prevention and disaster reduction, water resource utilization, and ecological environment maintenance; in particular, vegetation construction will have a significant impact on the basin's runoff generation and convergence process, thereby affecting the basin's hydropower generation.

[0003] The relevant basin hydropower generation prediction method directly calculates the corresponding basin hydropower generation changes by monitoring runoff changes, without considering the impact of vegetation construction on hydropower generation, which in turn affects the basin clean energy production management and decision-making. Summary of the invention

[0004] In view of this, the present invention provides a method and device for evaluating the impact of vegetation construction on hydropower generation in a river basin, so as to solve the problem that the relevant river basin hydropower generation prediction method does not consider the impact of vegetation construction on hydropower generation, affecting the clean energy production management and decision-making in the river basin.

[0005] In a first aspect, the present invention provides a method for evaluating the impact of vegetation construction on hydropower generation in a river basin, the method comprising: Construct a water-carbon coupling model for terrestrial ecosystems in the watershed; Set the baseline scenario and vegetation construction plan for the target watershed, and use the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed; The area of ​​the target watershed is obtained, and the average hydraulic head difference of the target watershed is calculated based on the runoff change of the target watershed and the area of ​​the target watershed; The evaluation results of the impact of vegetation construction on the hydropower generation in the target basin are determined based on the runoff change in the target basin and the average head difference in the target basin.

[0006] The method for evaluating the impact of vegetation construction on the hydropower generation in a watershed provided in this embodiment constructs a water-carbon coupling model of a watershed terrestrial ecosystem; sets a baseline scenario and a vegetation construction plan for a target watershed, and uses the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change in the target watershed; obtains the area of ​​the target watershed, and calculates the average head difference in the target watershed based on the runoff change in the target watershed and the area of ​​the target watershed; determines the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed based on the runoff change in the target watershed and the average head difference in the target watershed; and quantitatively calculates the impact of vegetation construction on the runoff change and the average head difference, thereby accurately and comprehensively evaluating the impact of vegetation construction in the watershed on the hydropower generation in the watershed, providing support for the management and decision-making of clean energy production in the watershed and the planning of vegetation construction.

[0007] In an optional implementation, a baseline scenario and a vegetation construction plan are set for the target watershed, and the water-carbon coupling model of the watershed terrestrial ecosystem is used to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed, including: Set up the baseline scenario and vegetation construction plan for the target watershed; The water cycle of the baseline scenario was simulated using the water-carbon coupling model of the basin's terrestrial ecosystem to obtain the baseline basin runoff. The water cycle of the vegetation construction scheme was simulated using the water-carbon coupling model of the watershed terrestrial ecosystem to obtain the runoff of the vegetation watershed; The runoff change of the target basin is calculated based on the runoff of the benchmark basin and the runoff of the vegetation basin.

[0008] The method for evaluating the impact of vegetation construction on the hydropower generation in a watershed provided in this embodiment simulates the runoff process in the watershed by using a water-carbon coupling model of the watershed terrestrial ecosystem. The runoff volume in the vegetation watershed and the runoff change in the target watershed are obtained, thereby achieving an accurate simulation of the runoff process of the target watershed ecosystem, and laying a foundation for evaluating the impact of vegetation construction in the watershed on the hydropower generation in the watershed.

[0009] In an optional implementation, setting a baseline scenario and a vegetation construction plan for a target watershed includes: The leaf area index and vegetation type in the target watershed are set, and a baseline scenario plan for the target watershed and a vegetation construction plan for the target watershed are constructed based on the leaf area index and vegetation type.

[0010] The method for evaluating the impact of vegetation construction on the hydropower generation in a watershed provided in this embodiment further limits the factors affecting the hydropower generation in the watershed by setting the leaf area index and vegetation type in the target watershed, and constructing a watershed baseline scenario plan and a watershed vegetation construction plan based on the leaf area index and vegetation type, thereby ensuring the accuracy of evaluating the impact of watershed vegetation construction on the hydropower generation in the watershed.

[0011] In an optional implementation, the runoff change of the target watershed is calculated based on the runoff of the benchmark watershed and the runoff of the vegetation watershed. The calculation formula for the runoff change of the target watershed is:

[0012] in, represents the change in runoff in the target basin, represents the runoff in the vegetated watershed, Represents the base basin runoff.

[0013] In an optional implementation, the average water head difference of the target watershed is calculated based on the runoff change of the target watershed and the area of ​​the target watershed. The calculation formula of the average water head difference of the target watershed is as follows:

[0014] in, represents the average head difference, Represents the area of ​​the target watershed.

[0015] In an optional implementation, the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed is determined based on the runoff change in the target watershed and the average head difference in the target watershed. The calculation formula for the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed is:

[0016] in, It shows the evaluation results of the impact of vegetation construction on the hydropower generation in the basin.

[0017] In a second aspect, the present invention provides a device for evaluating the impact of vegetation construction on the amount of hydropower generated in a watershed, the device comprising: Building modules for constructing water-carbon coupling models for terrestrial ecosystems in watersheds; The setting module is used to set the baseline scenario and vegetation construction plan of the target watershed, and use the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan to obtain the runoff change of the target watershed; A calculation module is used to obtain the area of ​​the target watershed and calculate the average water head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed; The determination module is used to determine the evaluation results of the impact of vegetation construction on the hydropower generation in the basin based on the runoff change in the target basin and the average head difference in the target basin.

[0018] In a third aspect, the present invention provides a computer device comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to execute the method for evaluating the impact of vegetation construction on the hydropower generation in a watershed according to the first aspect or any corresponding embodiment thereof.

[0019] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method for evaluating the impact of vegetation construction on hydropower generation in a watershed according to the first aspect or any corresponding embodiment thereof.

[0020] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the method for evaluating the impact of vegetation construction on hydropower generation in a watershed according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a flow chart of a method for evaluating the impact of vegetation construction on hydropower generation in a watershed according to an embodiment of the present invention; Figure 2 is a flow chart of another method for evaluating the impact of vegetation construction on hydropower generation in a river basin according to an embodiment of the present invention; Figure 3 is a structural block diagram of a device for evaluating the impact of vegetation construction on watershed hydropower generation according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] Vegetation construction has a significant impact on the runoff generation and convergence process in the basin, which in turn affects the hydropower generation in the basin. Quantitative evaluation of the impact of vegetation construction on basin hydropower generation requires two parts: first, quantitative evaluation of the impact of vegetation construction on basin runoff generation and convergence, and second, quantitative evaluation of the impact of basin runoff changes on basin hydropower generation. In terms of quantitative evaluation of the impact of vegetation construction on basin runoff generation and convergence, hydrological models such as SWAT (Soil and Water Assessment Tool) and VIC (Variable Infiltration Capacity) are used to simulate the basin runoff generation and convergence process under different vegetation coverage conditions; or satellite remote sensing technology is used to monitor the changes in vegetation coverage in the basin, and combined with ground observation data, the impact of vegetation construction on the basin hydrological process is analyzed; or through eco-hydrological experimental methods, eco-hydrological observation stations are set up in the basin to conduct field observations and records of the basin runoff generation and convergence process under changes in vegetation coverage.

[0025] However, in practical applications, the prediction methods of hydropower generation in relevant river basins still have problems such as difficulty in data acquisition and processing, uncertainty in model parameters, complexity of eco-hydrological processes, and imperfect long-term monitoring and evaluation systems. In addition, there are many studies on the impact evaluation of vegetation construction on river basin runoff and the impact of river basin runoff changes on river basin hydropower generation. There is currently no method for quantitatively evaluating the impact of vegetation construction on river basin hydropower generation.

[0026] To solve the above problems, an embodiment of the present invention provides a method for evaluating the impact of vegetation construction on hydropower generation in a river basin. The method quantitatively analyzes the impact of vegetation construction on hydropower generation through simulation of a water-carbon coupling model of a terrestrial ecosystem in the river basin, and quantitatively calculates the impact of vegetation construction on water volume and head in the river basin. The method comprehensively evaluates the changes in hydropower generation caused by vegetation construction in the river basin, making up for the deficiency of currently only evaluating a single link. The method can accurately and comprehensively evaluate the impact of vegetation construction in the river basin on hydropower generation in the river basin, provide support for river basin management and decision-making as well as vegetation construction planning, and provide support for clean energy production management and decision-making in the river basin.

[0027] The embodiment of the present invention provides a method for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed. It should be noted that the method for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed provided by the embodiment of the present invention may be executed by a device for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed. The device for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed may be implemented as part or all of an electronic device through software, hardware, or a combination of software and hardware. The electronic device may be a server or a terminal. The server in the embodiment of the present application may be a single server or a server cluster composed of multiple servers. The terminal in the embodiment of the present application may be a smart phone, a personal computer, a tablet computer, a wearable device, an intelligent robot, or other intelligent hardware devices. In the following method embodiments, the execution subject is an electronic device as an example for explanation.

[0028] According to an embodiment of the present invention, an embodiment of a method for evaluating the impact of vegetation construction on hydroelectric power generation in a watershed is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0029] In this embodiment, a method for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed is provided, which can be used for the above-mentioned electronic equipment. Figure 1 : is a flow chart of a method for evaluating the impact of vegetation construction on watershed hydropower generation according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps: Step S101, constructing a water-carbon coupling model for a watershed terrestrial ecosystem.

[0030] Specifically, the water-carbon coupling model of the terrestrial ecosystem in the basin can adopt WaSSI (Water Supply Stress Index model, water supply and demand calculation model), DTVGM-CASACNP (ecological and hydrological bidirectional coupling model), CHANGE (change model), RHESSys (regional hydrological and ecological simulation system), CEVSA model (carbon exchange between vegetation, soil and atmosphere model, which is a biogeochemical model that simulates the carbon exchange between vegetation, soil and atmosphere based on processes such as plant photosynthesis and respiration and soil microbial activity), BEPS model (boreal ecosystem productivity simulator, a computer simulation system for simulating the carbon balance of terrestrial ecosystems), IBIS model (Input / Output Buffer Information Specification, a method for fast and accurate modeling of I / O BUFFER based on V / I curve), CASA (Carnegie-Ames-Stanford approach, a process-based remote sensing model), VIP model (vegetation interface process model), etc.; among them, the water-carbon coupling model of the watershed terrestrial ecosystem can adopt WaSSI, which integrates the potential evapotranspiration model, snowmelt model and Sacramento model, and fully considers key water and carbon elements such as terrain undulation, soil moisture, vegetation status and water partitioning, and has achieved good application results.

[0031] Furthermore, a water-carbon coupling model of the terrestrial ecosystem in the basin was constructed: the model input data mainly include DEM (Digital Elevation Model), meteorological data (precipitation, temperature, etc.), leaf area index, soil type, vegetation type data, etc.; the model verification data mainly include runoff data and evapotranspiration data and total net primary productivity data of the main hydrological stations in the mainstream of the basin; the original water-carbon coupling model of the terrestrial ecosystem in the basin is a lumped empirical model, which uses grid unit input data and divides multiple grid units according to the basin and its boundary areas, such as , and use different software and processing methods to process basic data such as monthly meteorological data, watershed information, soil properties, land use type, impervious area and leaf area index to each grid unit, and finally process it into the data format required by the model input data format; among them, in order to transmit various information at the grid scale to the watershed scale, the grid data of each watershed is averaged to obtain various data results at the watershed scale; finally, the model parameters are calibrated and verified to obtain a simulation model with better simulation effect, and the basin runoff is obtained by simulating the calibrated model.

[0032] Step S102, setting a baseline scenario and a vegetation construction plan for the target watershed, using the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed.

[0033] Step S103, obtaining the area of ​​the target watershed, and calculating the average head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed.

[0034] Step S104, determining the evaluation result of the impact of vegetation construction on the hydropower generation in the target watershed based on the runoff change in the target watershed and the average water head difference in the target watershed.

[0035] Specifically, the hydropower generation in a river basin is affected by the head and water volume. If the drop and runoff of a river section or hydropower station in a river basin are known, the hydropower generation capacity of the river basin can be directly estimated. The calculation formula of the target river basin hydropower generation (i.e., the evaluation result of the impact of vegetation construction on the hydropower generation capacity of the river basin) is as follows: (1) in, It represents the evaluation results of the impact of vegetation construction on the hydropower generation in the basin. represents the change in runoff in the target basin, Represents the average head difference.

[0036] The method for evaluating the impact of vegetation construction on the hydropower generation in a watershed provided in this embodiment constructs a water-carbon coupling model of a watershed terrestrial ecosystem; sets a baseline scenario and a vegetation construction plan for a target watershed, and uses the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change in the target watershed; obtains the area of ​​the target watershed, and calculates the average head difference in the target watershed based on the runoff change in the target watershed and the area of ​​the target watershed; determines the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed based on the runoff change in the target watershed and the average head difference in the target watershed; and quantitatively calculates the impact of vegetation construction on the runoff change and the average head difference, thereby accurately and comprehensively evaluating the impact of vegetation construction in the watershed on the hydropower generation in the watershed, providing support for the management and decision-making of clean energy production in the watershed and the planning of vegetation construction.

[0037] In this embodiment, a method for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed is provided, which can be used for the above-mentioned electronic equipment. Figure 2 : is a flow chart of a method for evaluating the impact of vegetation construction on watershed hydropower generation according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps: Step S201: construct a water-carbon coupling model for the terrestrial ecosystem in the watershed. Figure 1 Step S101 of the illustrated embodiment will not be described in detail here.

[0038] Step S202, setting a baseline scenario and a vegetation construction plan for the target watershed, using the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed.

[0039] Specifically, the above step S202 includes: Step S2021, setting the baseline scenario plan and vegetation construction plan for the target watershed.

[0040] Specifically, the leaf area index and vegetation type in the target watershed are set, and a baseline scenario plan for the target watershed and a vegetation construction plan for the target watershed are constructed based on the leaf area index and vegetation type.

[0041] Furthermore, before conducting water cycle simulation, the water-carbon coupling model of the basin's terrestrial ecosystem needs to calculate the reference evapotranspiration based on the input data using the FAO Penman-Monteith (potential evapotranspiration in high latitudes) formula Based on the intrinsic relationship between reference evapotranspiration and meteorology (precipitation, temperature, radiation, humidity, etc.) and vegetation characteristics (leaf area index), the vegetation evapotranspiration potential of 10 different land use types in the basin, including farmland, deciduous forest, evergreen forest, mixed forest, grassland, shrub, wetland, town, bare land and water area, without considering the soil moisture condition, is estimated. The calculation formula of vegetation evapotranspiration potential is as follows: (2) in, represents the evapotranspiration potential considering the role of vegetation, that is, the vegetation evapotranspiration potential, is the precipitation, is the potential evapotranspiration, is the monthly average leaf area index; - is an empirical parameter.

[0042] Furthermore, from the above formula (4), it can be seen that the vegetation in the target watershed is measured by the regional leaf area index and vegetation type. The leaf area index and vegetation type are used as inputs of the water-carbon coupling model of the watershed terrestrial ecosystem. By setting different leaf area indices and vegetation types while keeping other model inputs unchanged, scenario simulation is performed through the watershed terrestrial ecosystem water-carbon coupling model. For example, the watershed baseline scenario is leaf area index and vegetation type , different watershed vegetation restoration schemes are leaf area index and vegetation type , that is, setting the current status baseline scenario and different vegetation construction schemes ( is 1, 2, 3...).

[0043] Step S2022, using the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the water cycle of the baseline scenario to obtain the baseline watershed runoff.

[0044] Specifically, based on the constructed water-carbon coupling model of the basin terrestrial ecosystem, the basin runoff process was simulated, and the basin runoff under the baseline scenario was calculated to obtain the baseline basin runoff. .

[0045] Step S2023, using the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the water cycle of the vegetation construction plan to obtain the vegetation basin runoff.

[0046] Specifically, the Sacramento Soil Moisture Accounting model (SAC model) is used to simulate the water cycle process of the basin, which can simulate the main hydrological parameters such as actual evapotranspiration, surface runoff, soil flow and groundwater runoff; among them, considering the influence of soil moisture on evapotranspiration, The value is used as the evaporation potential input parameter of the SAC model; at the same time, the soil parameters required for the SAC model can be estimated using soil texture data; among them, the SAC model is a deterministic model of continuous operation with lumped parameters, and is a standard soil moisture calculation model; the SAC model is based on the storage, infiltration, migration and evaporation characteristics of soil moisture, and uses a series of mathematical expressions with certain physical concepts to describe the various processes of runoff formation. The state variables in the model represent a relatively independent characteristic in the hydrological cycle, and the model parameters have clear physical meanings and can be deduced based on basin characteristics, rainfall and flow data.

[0047] Furthermore, the water cycle simulation was carried out using the water-carbon coupling model of the basin terrestrial ecosystem to simulate the basin runoff process and calculate the basin runoff under the basin baseline scenario and the basin vegetation construction scenario. and ( is 1, 2, 3...), the unit is cubic meter ( ), where the basin runoff includes groundwater runoff, surface runoff and soil flow, and the actual evapotranspiration is determined based on the bound water in the upper and lower soil layers.

[0048] Specifically, the calculation formula for the change in runoff in the target watershed is: (3) in, represents the runoff in the vegetated watershed, Represents the base basin runoff.

[0049] Step S2024, calculating the runoff change of the target watershed based on the runoff of the benchmark watershed and the runoff of the vegetation watershed.

[0050] Step S203, obtaining the area of ​​the target watershed, and calculating the average head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed.

[0051] Specifically, the water-carbon coupling model of the watershed terrestrial ecosystem was constructed to simulate the runoff process in the watershed, and the changes in the watershed process under the baseline scenario and different vegetation construction schemes were calculated. The corresponding average water heads were the baseline average water head, and the average water head of the vegetated watershed .

[0052] Furthermore, the calculation formula for the average head difference of the target basin is as follows: (4) in, Represents the area of ​​the target watershed.

[0053] Step S204: Determine the impact evaluation result of vegetation construction on the hydropower generation in the target basin based on the runoff change in the target basin and the average head difference in the target basin. Figure 1 Step S104 of the illustrated embodiment will not be described in detail here.

[0054] The method for evaluating the impact of vegetation construction on the hydropower generation in a watershed provided in this embodiment simulates the runoff process in the watershed by using a water-carbon coupling model of the watershed terrestrial ecosystem. The runoff volume in the vegetation watershed and the runoff change in the target watershed are obtained, thereby achieving an accurate simulation of the runoff process of the target watershed ecosystem, and laying a foundation for evaluating the impact of vegetation construction in the watershed on the hydropower generation in the watershed.

[0055] In this embodiment, a device for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0056] This embodiment provides a device for evaluating the impact of vegetation construction on the amount of hydroelectric power generated in a watershed. Figure 3 As shown, including: The construction module 301 is used to construct a water-carbon coupling model of the terrestrial ecosystem in the watershed.

[0057] The setting module 302 is used to set the baseline scenario and vegetation construction plan of the target watershed, and use the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed.

[0058] The calculation module 303 is used to obtain the area of ​​the target watershed and calculate the average head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed.

[0059] The determination module 304 is used to determine the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed based on the runoff change of the target watershed and the average head difference of the target watershed.

[0060] In some optional implementations, the setting module 302 includes: A setting unit is used to set the baseline scenario and vegetation construction plan for the target watershed.

[0061] The first simulation unit is used to simulate the water cycle of the baseline scenario using the water-carbon coupling model of the watershed terrestrial ecosystem to obtain the baseline watershed runoff.

[0062] The second simulation unit is used to simulate the water cycle of the vegetation construction plan using the water-carbon coupling model of the watershed terrestrial ecosystem to obtain the vegetation basin runoff.

[0063] The calculation unit is used to calculate the runoff change of the target basin based on the runoff of the benchmark basin and the runoff of the vegetation basin.

[0064] In some optional implementations, the calculation formula for the change in runoff in the target watershed in the setting module 302 is:

[0065] in, represents the change in runoff in the target basin, represents the runoff in the vegetated watershed, Represents the base basin runoff.

[0066] In some optional implementations, the calculation formula for the average water head difference of the target watershed in the calculation module 303 is as follows:

[0067] in, represents the average head difference, Indicates the area of ​​the target watershed.

[0068] In some optional implementations, the calculation formula for evaluating the impact of vegetation construction on the hydropower generation in the watershed in the determination module 304 is as follows:

[0069] in, It shows the evaluation results of the impact of vegetation construction on the hydropower generation in the basin.

[0070] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0071] The device for evaluating the impact of vegetation construction on the hydropower generation in a watershed in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0072] The embodiment of the present invention also provides a computer device having the above Figure 3 The device shown is used to evaluate the impact of vegetation construction on the hydroelectric power generation in a watershed.

[0073] See also Figure 4 , Figure 4 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 4 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 4 A processor 10 is taken as an example.

[0074] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0075] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0076] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0077] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0078] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0079] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device may be a touch screen.

[0080] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0081] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0082] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for evaluating the impact of vegetation construction on hydropower generation in a river basin, characterized in that: The method comprises: Construct a water-carbon coupling model for terrestrial ecosystems in the watershed; A baseline scenario and a vegetation construction plan are set for the target watershed, and the water-carbon coupling model of the watershed terrestrial ecosystem is used to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan, respectively, to obtain the runoff change of the target watershed; Acquire the area of ​​the target watershed, and calculate the average head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed; The evaluation result of the impact of vegetation construction on the hydropower generation in the target watershed is determined based on the runoff change in the target watershed and the average head difference in the target watershed.

2. The method according to claim 1, characterized in that The benchmark scenario and vegetation construction scheme of the target watershed are set, and the water-carbon coupling model of the watershed terrestrial ecosystem is used to simulate the watershed runoff process corresponding to the benchmark scenario and the vegetation construction scheme, respectively, to obtain the runoff change of the target watershed, including: Set up the baseline scenario and vegetation construction plan for the target watershed; Using the water-carbon coupling model of the terrestrial ecosystem of the watershed, the water cycle of the baseline scenario is simulated to obtain the baseline watershed runoff; Using the water-carbon coupling model of the watershed terrestrial ecosystem to simulate the water cycle of the vegetation construction plan, and obtain the vegetation watershed runoff; The runoff change of the target watershed is calculated based on the runoff of the benchmark watershed and the runoff of the vegetation watershed.

3. The method according to claim 2, characterized in that The benchmark scenario and vegetation construction plan for setting the target watershed include: The leaf area index and vegetation type in the target watershed are set, and a baseline scenario plan for the target watershed and a vegetation construction plan for the target watershed are constructed based on the leaf area index and vegetation type.

4. The method according to claim 2, characterized in that: The target basin runoff change is calculated based on the benchmark basin runoff and the vegetation basin runoff. The calculation formula for the target basin runoff change is as follows: in, represents the change in runoff in the target basin, represents the runoff in the vegetated watershed, Represents the base basin runoff.

5. The method according to claim 1, characterized in that The target basin average water head difference is calculated based on the runoff change of the target basin and the area of ​​the target basin. The calculation formula of the target basin average water head difference is as follows: in, represents the average head difference, Represents the area of ​​the target watershed.

6. The method according to claim 1, characterized in that The evaluation result of the impact of vegetation construction on the hydropower generation in the watershed is determined based on the runoff change of the target watershed and the average head difference of the target watershed. The calculation formula of the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed is as follows: in, It represents the evaluation results of the impact of vegetation construction on the hydropower generation in the basin.

7. A device for evaluating the impact of vegetation construction on watershed hydropower generation, characterized in that: The device comprises: Building modules for constructing water-carbon coupling models for terrestrial ecosystems in watersheds; A setting module is used to set a baseline scenario and a vegetation construction plan for a target watershed, and to simulate the watershed runoff process corresponding to the baseline scenario and the vegetation construction plan using the water-carbon coupling model of the watershed terrestrial ecosystem to obtain the runoff change of the target watershed; A calculation module, used for obtaining the area of ​​a target watershed, and calculating the average head difference of the target watershed based on the runoff change of the target watershed and the area of ​​the target watershed; The determination module is used to determine the evaluation result of the impact of vegetation construction on the hydropower generation in the watershed based on the runoff change of the target watershed and the average head difference of the target watershed.

8. A computer device, characterized in that: include: 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 method for evaluating the impact of vegetation construction on the hydropower generation in a watershed as described in any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the method for evaluating the impact of vegetation construction on the hydropower generation in a watershed according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the method for evaluating the impact of vegetation construction on the hydroelectric power generation in a watershed as claimed in any one of claims 1 to 6.

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