CN-122022318-A - Regional wetland carbon sink collaborative management method and system

CN122022318ACN 122022318 ACN122022318 ACN 122022318ACN-122022318-A

Abstract

The invention provides a regional wetland carbon sink collaborative management method and a regional wetland carbon sink collaborative management system, which relate to the technical field of wetland management and comprise the steps of acquiring remote sensing image data and geographic information data of a target region, and identifying wetland units by adopting an object-oriented classification method; arranging monitoring points on each wetland unit, calculating the baseline carbon reserves of each wetland unit, establishing a sink-increasing potential evaluation system, determining the upper limit of the sink-increasing potential of each wetland unit, establishing a coordination relation matrix among the wetland units, establishing a coordination effect calculation rule, establishing an optimization model, setting constraint conditions, adopting an improved genetic algorithm to solve the optimization model to obtain an optimal management measure configuration scheme of each wetland unit, and implementing corresponding management measures on each wetland unit according to the optimal management measure configuration scheme. The method can solve the technical problems of unreasonable regional wetland carbon sink space configuration, lack of a collaborative optimization method and low carbon fixation capacity lifting efficiency in the prior art.

Inventors

ZHENG SHUHONG
YU SHIWEI
LIU BOTAO
LIU JIE
FENG YIN
LI XIA
CHEN LIXIANG
Ma Zimu
DU CHUANTAO

Assignees

湖北经济学院

Dates

Publication Date: 20260512
Application Date: 20260128

Claims (10)

1. The regional wetland carbon sink collaborative management method is characterized by comprising the following steps of: S1, acquiring remote sensing image data and geographic information data of a target area, identifying wetland units by adopting an object-oriented classification method, and acquiring boundary, area and type information of each wetland unit; S2, establishing a collection increasing potential evaluation system, determining an executable management measure set aiming at each wetland unit, calculating carbon collection increment of each wetland unit under different management measures, and determining the upper limit of the collection increasing potential of each wetland unit; S3, identifying hydrologic connectivity, space adjacency and ecological corridor connectivity among the wetlands, constructing a cooperative relation matrix among the wetlands, wherein matrix elements are cooperative influence coefficients among wetland pairs; S4, establishing an optimization model with the maximization of regional carbon summary increment as an objective function, wherein the carbon summary increment comprises carbon sink increment generated by directly implementing management measures on each wetland and additional carbon sink increment generated by the cooperative relationship among the wetland; s5, implementing corresponding management measures for each wetland unit according to the optimal management measure configuration scheme.
2. The regional wetland carbon sink collaborative management method according to claim 1, further comprising, after implementing the management measure in step S5: Establishing a carbon sink dynamic monitoring mechanism, and carrying out continuous monitoring by using laid monitoring points, wherein the dynamic monitoring mechanism comprises periodic remote sensing monitoring and key time point ground monitoring; calculating actual carbon reserves of each wetland unit at the monitoring moment based on the monitoring data, and calculating actual carbon sink accumulation increment and regional total actual carbon sink accumulation increment of each wetland unit since the implementation of the management measures; Comparing and analyzing the actual carbon sink increment with the expected carbon sink increment, and calculating the sink increasing realization rate of each wetland unit; And when the overall sink-increasing realization rate is lower than a preset threshold value or the regional carbon sink target is not achieved, updating the sink-increasing potential evaluation parameter and the cooperative relation matrix according to the latest monitoring data, and re-executing the optimization solution of the step S4 to generate an adjusted optimal management measure configuration scheme.
3. The regional wetland carbon sink collaborative management method according to claim 1, wherein the specific method for arranging monitoring points in each wetland unit in step S1 is as follows: Determining the total number of monitoring points according to the unit area of the wetland; Extracting vegetation coverage, topography elevation and carbon sink space different characteristic parameters of each wetland unit, dividing pixels meeting the vegetation coverage of more than 0.6 and the distance from the water body of less than 50 meters into a high carbon sink region by adopting a multi-threshold classification rule, dividing pixels meeting the vegetation coverage of between 0.3 and 0.6 or the distance from the water body of between 50 and 150 meters into a medium carbon sink region, and dividing the rest pixels into a low carbon sink region; And distributing the monitoring points to three levels according to the proportion of 40% of a high carbon sink region, 40% of a medium carbon sink region and 20% of a low carbon sink region by adopting a layered random point distribution method, and determining the specific spatial positions of the monitoring points in each level by adopting a random sampling mode.
4. The regional wetland carbon sink collaborative management method according to claim 1, wherein the sink enhancement potential evaluation system established in step S2 comprises four dimensions of vegetation restoration potential, soil carbon sequestration potential, hydrologic regulation potential and exogenous interference control potential; The carbon sink increment of each wetland unit under different management measures comprises a vegetation carbon sink increment and a soil carbon sink increment, wherein the vegetation carbon sink increment is obtained by calculating a difference value between target vegetation biomass and current vegetation biomass, a rhizome ratio, a vegetation carbon content, a wetland area and a time correction coefficient after the management measures are implemented, and the soil carbon sink increment is obtained by calculating a difference value between target soil organic carbon content and current soil organic carbon content of each soil layer, a soil volume weight, a soil layer thickness, a wetland area and a soil organic carbon accumulation rate constant after the management measures are implemented.
5. The regional wetland carbon sink collaborative management method according to claim 1, wherein the specific method for constructing the inter-wetland collaborative relation matrix in step S3 is as follows: Identifying hydrologic connectivity among wetlands, wherein the hydrologic connectivity comprises surface hydrologic connectivity and underground hydrologic connectivity, the surface hydrologic connectivity is judged by extracting a river water system and a surface runoff path through a hydrologic analysis tool, and the underground hydrologic connectivity is judged by calculating pearson correlation coefficients of two wetland water level time sequences; identifying the space adjacency between the wetlands, and comparing the shortest distance of the wetland boundaries with a characteristic scale threshold value by calculating the shortest distance of the wetland boundaries; Identifying ecological corridor connectivity among the wetlands, and identifying ecological corridor connecting the two wetlands by adopting a minimum cost path analysis method; The synergistic effect coefficient is quantized by adopting a comprehensive model based on multi-factor weighting, distance attenuation and sink increase potential adjustment, and the calculation formula is as follows: In the formula, Is the synergistic influence coefficient of the wetland i on the wetland j; Is a hydrologic connectivity strength index; A physiological relevance index; is a distance decay function; Is a source wetland area influence function; the sink-increasing potential influence function is used for the source wetland; And Is a weight coefficient, satisfies 。
6. The regional wetland carbon sink collaborative management method according to claim 1, wherein the collaborative effect calculation rule established in step S3 is: after the management measures are implemented on the wetland to obtain the carbon sink increment, the synergistic sink increment effect is generated on other wetland, and the calculation formula of the synergistic sink increment received by other wetland is as follows: In the formula, The synergistic amount of the wet land j is increased; Is a collaborative gain coefficient; is the synergistic influence coefficient of the wetland i on the wetland j; N is the total number of wetland units; After the synergistic effect is considered, the total carbon sink increment of the wetland j in the planning period is equal to the sum of the carbon sink increment generated by directly implementing the management measures and the received synergistic sink increment.
7. The regional wetland carbon sink collaborative management method according to claim 1, wherein the optimization objective function established in step S4 is: In the formula, Summarizing the delta for regional carbon; as a decision variable, representing whether the wetland i adopts a management measure k; adopting a carbon sink increment of a management measure k for the wetland i; Is a collaborative gain coefficient; Is the synergistic influence coefficient of the wetland j on the wetland i; The number of the management measures selectable for the wetland i is n, wherein n is the total number of wetland units; To decide the variables, it is indicated whether the wetland j adopts the management measures ; Adopting management measures for wetland j Carbon sink increment of (2); the number of management measures selectable for wetland j; The set constraint conditions comprise resource budget constraint, sink-increasing potential constraint, management measure uniqueness constraint and ecological safety constraint, wherein the resource budget constraint ensures that the total cost of all wetlands for implementing management measures does not exceed the total budget, the sink-increasing potential constraint ensures that the sink-increasing amount of each wetland does not exceed the upper limit of the sink-increasing potential, the management measure uniqueness constraint ensures that each wetland is required and only one management measure can be selected, and the ecological safety constraint ensures that the ecological health index of each wetland after implementing the management measures is not lower than an ecological safety threshold, wherein the ecological health index comprehensively considers the biodiversity index, the water quality index and the habitat quality index.
8. The regional wetland carbon sink collaborative management method according to claim 7, wherein the improved genetic algorithm adopted in step S4 comprises the steps of: Initializing a population, wherein each individual represents a complete management scheme, and an integer coding mode is adopted to represent the management measure number selected by each wetland, and the initial population is generated by combining random generation and greedy strategy based on the sink-increasing potential; step two, calculating a fitness function, wherein for each individual examination whether all constraint conditions are met, if the constraint conditions are violated, penalty is applied, the fitness function comprises an area total carbon sink increment, a budget constraint violation penalty term and an ecological security constraint violation penalty term, and the calculation formula is as follows: In the formula, As the s-th individual Is a fitness value of (a); For individuals Corresponding regional total carbon sink increment; For individuals A corresponding total cost; Is the total budget; Is an ecological safety threshold; In the individual for wetland i Ecological health index under the corresponding scheme; And Is a penalty coefficient; Step three, adopting an improved tournament selection strategy to perform selection operation, randomly extracting a plurality of individuals from a population each time, calculating the fitness value and the synergy contribution degree of the individuals, wherein the synergy contribution degree is defined as the proportion of the total amount of the synergy amount generated by all the wetlands in the individual corresponding scheme, and comprehensively considering the fitness value and the synergy contribution degree to determine the selection probability; Step four, performing crossover operation by adopting a single-point crossover operator, randomly selecting crossover points to exchange chromosomes of two parent individuals to generate child individuals, checking whether the child individuals meet constraint conditions after crossover and repairing; Performing mutation operation by adopting a self-adaptive mutation strategy based on a synergistic relationship, wherein the mutation probability is self-adaptively adjusted according to individual fitness, randomly selecting one wetland position during mutation, identifying a plurality of wetlands with strong synergistic relationship with the wetland, and selecting a tendency to adjust the management measures of the current wetland according to the management measures of the associated wetland so as to enhance the synergistic effect; Step six, stopping iteration when the maximum iteration times or the improvement amplitude of the optimal fitness value of the continuous multi-generation population is smaller than a threshold value, otherwise, returning to the step two to continue iteration; and step seven, outputting an individual with the highest fitness value as an optimal solution to obtain an optimal management measure configuration scheme of each wetland unit.
9. A regional wetland carbon sink collaborative management method according to claim 8, wherein the selection probability in the improved tournament selection strategy is calculated as: Wherein a represents a candidate individual in the tournament, h is an individual index in the tournament; Fitness value for individual a; A degree of synergistic contribution for individual a; And The method comprises the steps of selecting a parent individual from tournament individuals to enter a cross pool by adopting a roulette method according to the calculated selection probability.
10. A regional wetland carbon sink co-management system for implementing the method of any one of claims 1-9.

Description

Regional wetland carbon sink collaborative management method and system Technical Field The invention relates to the technical field of wetland management, in particular to a regional wetland carbon sink collaborative management method and system. Background Wetland is one of the globally important carbon reservoirs, playing a key role in the carbon circulation of the terrestrial ecosystem. Along with the proposal of 'carbon reaching peak and carbon neutralization' targets, improving the carbon fixation and exchange increase capacity of the wetland becomes an important way for realizing the emission reduction targets. Wetland carbon catchment management relates to comprehensive application of various measures such as vegetation recovery, hydrologic regulation and control, pollution control and the like. The traditional wetland carbon assembly management often carries out management measures independently aiming at single wetland plaques, and mainly determines management priority according to indexes such as wetland degradation degree, area size and the like. However, there is a close relationship such as hydrologic communication, material circulation, and biological migration among the wetland units in the area, and the improvement of the carbon fixing capability of the single wetland can generate a positive synergistic effect on the surrounding wetland, and the synergistic effect is often ignored in the existing management mode, so that the space rationality of the management measure configuration is insufficient. The Chinese patent application CN116842351A discloses a method for constructing a coastal wetland carbon sink assessment model, which comprises the steps of obtaining meteorological data of a coastal wetland, near-image data of an evolution area and near-image data of a maturation area, extracting static characteristics and time sequence change characteristics of the evolution area by utilizing a first characteristic extraction network, extracting meteorological characteristics by utilizing a second characteristic extraction network, inputting the static characteristics, the time sequence change characteristics and the gas image characteristics into a maturity prediction model to obtain the maturity of the evolution area, and inputting the maturity, the meteorological characteristics and the near-image data of the maturation area into the assessment model to obtain a carbon sink assessment result of the coastal wetland. The method improves the carbon sink assessment of the coastal wetland evolution region, considers the influence of the maturity of the evolution region on the carbon sink capacity, and improves the accuracy of the carbon sink assessment. However, this patent does not relate to an optimal configuration of how to perform management measures on a regional scale for a plurality of wetland units, and does not consider the influence of the synergistic relationship between the wetlands on the carbon sink increment. Disclosure of Invention In view of the above, the invention provides a regional wetland carbon sink collaborative management method and system, which realize regional carbon sink increment maximization and resource efficient configuration by evaluating the sink increasing potential of each wetland, identifying the collaborative relationship among the wetlands and constructing an optimization model, and solve the technical problems of unreasonable regional wetland carbon sink space configuration, lack of a collaborative optimization method and low carbon fixation capacity lifting efficiency in the prior art. The technical scheme of the invention is realized as follows: In one aspect, the invention provides a regional wetland carbon sink collaborative management method, which comprises the following steps: S1, acquiring remote sensing image data and geographic information data of a target area, identifying wetland units by adopting an object-oriented classification method, and acquiring boundary, area and type information of each wetland unit; S2, establishing a collection increasing potential evaluation system, determining an executable management measure set aiming at each wetland unit, calculating carbon collection increment of each wetland unit under different management measures, and determining the upper limit of the collection increasing potential of each wetland unit; S3, identifying hydrologic connectivity, space adjacency and ecological corridor connectivity among the wetlands, constructing a cooperative relation matrix among the wetlands, wherein matrix elements are cooperative influence coefficients among wetland pairs; S4, establishing an optimization model with the maximization of regional carbon summary increment as an objective function, wherein the carbon summary increment comprises carbon sink increment generated by directly implementing management measures on each wetland and additional carbon sink increment generated by the cooperative relationship among the