Marine ecological restoration performance evaluation system based on carbon sink analysis

Abstract

The invention discloses a marine ecological restoration performance evaluation system based on carbon sink analysis, which sequentially comprises a target layer, a criterion layer, a factor layer and an index layer, and is characterized in that the target layer takes a regional marine ecological restoration project as a unified target, and the criterion layer comprises water body ecological performance, marine biological resource performance, shoreline resource performance and social economic performance; the factor layer and the index layer are superior and subordinate quantitative index layers further proposed based on the target layer and the criterion layer so as to directly reflect the overall condition of the criterion layer and the factor layer. The method has a remarkable effect of scientifically evaluating the treatment of the marine ecological restoration project, intuitively and accurately judges the performance level of the marine ecological restoration project, provides a key basis for a marine ecological restoration decision, powerfully promotes sustainable restoration and management of a marine ecological system, and has a wide application prospect. The method has important application value and wide prospects in the aspects of improving the ocean carbon sequestration capacity and coping with climate changes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of marine ecological restoration, and particularly relates to a marine ecological restoration performance evaluation system based on carbon sink analysis. BACKGROUND

[0002] Marine ecological restoration refers to a process of restoring the structure and function of a damaged or degraded marine ecosystem through artificial intervention and natural recovery. The core objectives include restoring the ecosystem, recovering the natural topography, and improving the ecological service function. The restoration objects cover biological communities, habitats, and ecological functions, and the principles of natural recovery as the main, land-sea integration, and controllable risk are followed. The technical system in this field covers the restoration of typical ecosystems such as mangrove forests, coral reefs, and seagrass beds, adopts methods such as artificial reef construction, vegetation planting, and pollution control, and needs to develop a standardized process including degradation diagnosis, restoration measures, and monitoring and evaluation. Each marine ecological restoration requires different content, and is extremely dependent on the background investigation and measures taken. If there is no relationship with the engineering or restoration measures, a large amount of unnecessary waste will be generated, and the pertinence is not strong, so the specific project is still taken as the research object. SUMMARY

[0003] Therefore, the application aims to provide a marine ecological restoration performance evaluation system based on carbon sink analysis to solve the problems in the prior art.

[0004] In order to achieve the above-mentioned purpose, the application is realized by the following technical scheme:

[0005] A marine ecological restoration performance evaluation system based on carbon sink analysis is provided, which sequentially comprises a target layer, a criterion layer, a factor layer, and an index layer. The target layer takes regional marine ecological restoration engineering as a unified target. The criterion layer includes water body ecological performance, marine biological resource performance, shoreline resource performance, and social and economic performance. The factor layer and the index layer are further proposed upper and lower quantified index layers based on the target layer and the criterion layer, to directly reflect the overall condition of the criterion layer and the factor layer.

[0006] According to the marine ecological restoration performance evaluation system based on carbon sink analysis, the factor layer includes water dynamic index and water quality index belonging to the water body ecological performance, fish resource performance index, coral resource performance index, seagrass bed / algae bed resource performance index, and benthic biological resource performance index belonging to the marine biological resource performance, ecological shoreline index, beach resource index, and coastal safety index belonging to the shoreline resource performance, and social benefit index and economic benefit index belonging to the social and economic performance.

[0007] According to the marine ecological restoration performance evaluation system based on the carbon sink analysis, in the index layer, the hydrodynamic index includes tidal volume and water exchange rate, the water quality index includes dissolved organic carbon, inorganic nitrogen and suspended sediment concentration, the fish resource performance index includes fish diversity index, fish comprehensive carbon fixation rate and fish reef comprehensive carbon fixation rate, the coral resource performance index includes live coral coverage, coral species and coral comprehensive carbon fixation rate, the seaweed bed resource performance index includes macroalgae coverage, macroalgae species and comprehensive seaweed / carbon fixation rate, the benthic organism resource performance index includes benthic organism diversity index and benthic organism carbon fixation rate, the ecological shoreline index includes vegetation coverage, vegetation diversity index and vegetation comprehensive carbon fixation rate, the beach resource index includes beach shoreline occupancy, beach width, beach bottom index and beach dynamic stability, the coastal safety index includes overtopping, overall anti-sliding stability and seepage stability, the social benefit index includes public satisfaction, and the economic benefit index includes cost input and tourism revenue index.

[0008] According to the marine ecological restoration performance evaluation system based on the carbon sink analysis, the index layer is directly obtained through experiments, satellite remote sensing, field measurement and model calculation.

[0009] The beneficial effects of the technical scheme of the present application are as follows:

[0010] The present application is suitable for application in the evaluation of marine ecological restoration and has important application value and broad prospects in promoting the sustainable restoration and management of marine ecological systems, improving marine carbon sink capacity and responding to climate change. BRIEF DESCRIPTION OF DRAWINGS

[0011] To further illustrate the above-mentioned purposes, structural characteristics and effects of the present application, the present application will be described in detail below in conjunction with the drawings.

[0012] Figure 1 The figure is a schematic block diagram of the evaluation system structure of the preferred embodiment of the present application. DETAILED DESCRIPTION

[0013] The terms "application" and "the present application" used in the present specification are intended to refer broadly to all of the subject matter of this specification and any patent claims below. Statements containing these terms should be understood not to limit the subject matter described herein or to limit the meaning or scope of any patent claims below. Furthermore, this specification does not intend to describe or limit the subject matter covered by any particular embodiments of the application. The subject matter should be interpreted to cover all alternatives consistent with the principles of the application. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the following claims define and encompass any such embodiments.

[0014] The details of the application will now be discussed with reference to the accompanying drawings, which are presented by way of illustration only, and thus are not intended to limit the application in any way. In the accompanying drawings, like reference numerals identify like elements or components.

[0015] The use of "including," "having," "containing," and "comprising" and variations thereof herein are meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Although the terms above such as upper, lower, upward, downward, rearward, frontward, back, forth, forward, rearward, top, bottom, inside, outside, upper, lower, up, down, forward, rear, back, bottom, top, front, rear, etc. can be used in this disclosure, it is understood that these terms are used for convenience and are not intended to limit the application or the scope of the application in any manner. Furthermore, terms such as "first", "second", "third", etc. are used herein for purposes of illustration and description only and are not intended to limit the scope of the application or the appended claims in any way.

[0016] Referring to Figure 1 As shown, the marine ecological restoration performance evaluation system based on carbon sink analysis of the present application sequentially comprises a target layer, a criterion layer, a factor layer and an index layer, the target layer takes regional marine ecological restoration engineering as a unified target, the criterion layer comprises water body ecological performance, marine biological resource performance, shoreline resource performance and social and economic performance, the factor layer and the index layer are upper and lower quantified index layers further proposed based on the target layer and the criterion layer to directly reflect the overall conditions of the criterion layer and the factor layer.

[0017] The factor layer comprises water dynamic index and water quality index belonging to water body ecological performance, fish resource performance index, coral resource performance index, seagrass bed / algal bed resource performance index and benthic biological resource performance index belonging to marine biological resource performance, ecological shoreline index, beach resource index and coastal safety index belonging to shoreline resource performance, social benefit index and economic benefit index belonging to social and economic performance.

[0018] In the index layer, the water power index includes tidal volume and water exchange rate, the water quality index includes dissolved organic carbon, inorganic nitrogen and suspended sediment concentration, the fish resource performance index includes fish diversity index, fish comprehensive carbon fixation rate and fish reef comprehensive carbon fixation rate, the coral resource performance index includes live coral coverage, coral species and coral comprehensive carbon fixation rate, the seaweed bed / resource performance index includes macroalgae coverage, macroalgae species and comprehensive seaweed / carbon fixation rate, the benthic resource performance index includes benthic diversity index and benthic carbon fixation rate, the ecological shoreline index includes vegetation coverage, vegetation diversity index and vegetation comprehensive carbon fixation rate, the beach resource index includes beach shoreline occupancy, beach width, beach substrate index and beach dynamic stability, the coastal safety index includes overtopping, overall anti-sliding stability and seepage stability, the social benefit index includes public satisfaction, and the economic benefit index includes cost input and tourism revenue index.

[0019] The three-level indexes and the weight of each index of the marine ecological restoration evaluation are shown in Table 1.

[0020] Table 1 Marine ecological restoration evaluation indexes and index weights based on carbon sink analysis

[0021]

[0022] Evaluation steps:

[0023] 1. Determine the sampling points of the study sea area

[0024] The marine sampling point radius is 1-5 km, and the whole marine sampling point is not less than 6, and needs to be uniformly arranged, and sampling points need to be added for special positions. The sampling point depth is 0.5 m underwater.

[0025] 2. Monitoring sample collection and analysis:

[0026] 2.1 Water ecological performance index

[0027] (1) Water power index

[0028] a. Tidal volume

[0029] Index meaning: Tidal volume refers to the total amount of tidal water that a bay can accept in a tidal cycle (usually a lunar day), which is an important index for measuring the tidal characteristics and tidal capacity of the water area, and is measured in cubic meters (m 3 ). The bay tidal volume is defined as the difference between the high tide water volume and the low tide water volume, and the value of the tidal volume mainly depends on the change of the tidal level and the change of the sea area. The calculation formula of the bay tidal volume is generally as follows.

[0030] W = 12 (S1 + S2) (h1 - h2),

[0031] Where, W is the tidal volume; S1, S2 are the water area at high and low tide respectively; h1, h2 are the corresponding tide height of S1, S2 respectively.

[0032] Investigation method: field measurement or numerical simulation

[0033] Evaluation criteria: as shown in the table below

[0034]

[0035] b. Water exchange rate

[0036] Dissolved conservative substances are used as tracers for water exchange research. It is assumed that the relative concentration of conservative substances in the bay is 1 at the initial moment, and the relative concentration of conservative substances outside the bay is 0. After a certain period of convection and diffusion, the percentage of the concentration of substances exchanged from the bay to the outside is calculated, which is the water exchange rate.

[0037] The formula for calculating the water exchange rate of the bay is:

[0038] The total water depth of the ith grid at the moment; n is the number of grids in the bay.

[0039] EX j =1-i=1nC ij ·A i ·H ij =1nA i ·H ij ×100%

[0040] Where, EX j is the water exchange rate of the bay at time j; C ij is the concentration of the ith grid at time j; A i is the area of the ith grid; H ij is the total water depth of the ith grid at time j; n is the number of grids in the bay.

[0041] The formula for calculating the water exchange rate is:

[0042] J = (EX j - EX) / EX

[0043] Where, EX j is the water exchange rate after the implementation of the project, and EX is the water exchange rate before the implementation of the project.

[0044] Investigation method: numerical simulation

[0045] Evaluation criteria: as shown in the table below

[0046]

[0047] (2) Water quality index

[0048] In the interest of convenient measurement and the availability of the evaluation system, the relevant indicators are selected as follows:

[0049] a. Dissolved Organic Carbon (DOC)

[0050] Indicator meaning: Dissolved Organic Carbon is the total amount of organic carbon contained in the filtrate after the water sample is filtered through a 0.45 μm filter. It is usually measured in mg / L. It is mainly derived from the decomposition of plant and animal residues, the metabolism of aquatic organisms, soil leaching, and human emissions (such as domestic sewage and industrial wastewater). It is an important indicator of water pollution and carbon cycling in aquatic ecosystems, and it also affects water transparency, dissolved oxygen, and pollutant migration and transformation.

[0051] Investigation method: field measurement or numerical simulation

[0052] Evaluation criteria: as shown in the table below

[0053]

[0054] b. Inorganic Nitrogen

[0055] Indicator meaning: It reflects the degree of water eutrophication. Inorganic nitrogen refers to nitrogen-containing substances in water or the environment that are not combined with carbon. It mainly includes nitrate, nitrite, ammonia nitrogen, and other forms of nitrogen compounds. These inorganic nitrogen compounds exist widely in the natural environment and are important nutrients for aquatic life. The concentration of inorganic nitrogen is usually calculated by measuring the sum of nitrate, nitrite, and ammonia nitrogen.

[0056] Investigation method: field measurement or numerical simulation

[0057] Evaluation criteria: as shown in the table below

[0058]

[0059] c. Suspended Sediment Concentration

[0060] Indicator meaning: Its particle size range is generally defined by the academic community as 0.001-0.05 mm. Particles with a particle size of less than 0.05 mm are classified as sand particles. From the perspective of dynamic mechanism, the suspension state of such particles is mainly maintained by water power disturbance, such as river runoff scouring, wind-induced water vortex, tidal reciprocating motion, and other dynamic effects. These effects can overcome the balance between the particle's own gravity and water resistance, making it difficult for the particle to naturally settle into the bottom and thus remain suspended in the water layer for a long time.

[0061] Investigation method: field measurement or numerical simulation

[0062] Evaluation criteria: as shown in the table below

[0063]

[0064] 2.2 Marine biological resources performance indicators

[0065] Since the evaluation criteria are mainly for the implementation of engineering measures, and the purpose is to facilitate measurement, the availability is strong, so phytoplankton, zooplankton, etc. are not in this evaluation index.

[0066] (1) Fish resources performance indicators

[0067] a. Fish diversity index

[0068] Fish sample collection and processing, every summer from July to September, using trawl, gill net, custom net and other fishing methods to investigate the existing fish resources and biomass in the evaluation river; The collected fish, especially the species that are not easy to collect, are recorded and photographed in time, and the specimens are fixed after identification to species; When fixed, first wash the fish body with clean water, soak in a solution containing 10% formalin for preservation; Fish catch analysis: after species identification and statistics, determine the species composition, quantity, weight, density, etc.

[0069] Fish diversity assessment G-F index method:

[0070] F index DF (family diversity) calculation:

[0071] DF = k = 1 mDF k = -k = 1 m i = 1 np i lnp i

[0072] Where: p i = sk i / sk, sk i is the number of species in K family i genus in the checklist, sk is the number of species in the family in the checklist; n is the number of genera in the family; m is the number of fish families in the checklist;

[0073] G index DG (genus diversity) calculation:

[0074] DG = -j = 1 pDG j = -j = 1 pq j lnq j

[0075] Where: q j = S j / S, S j is the number of species in j genus, S is the number of species of fish in the checklist, and p is the number of genera of fish in the checklist;

[0076] Diversity G-F index calculation:

[0077] Investigation method: field survey

[0078] Investigation method: field survey

[0079] Evaluation standard: fish diversity evaluation standard is shown in the table

[0080]

[0081] b. Fish comprehensive carbon sequestration rate

[0082] Index meaning: the carbon sequestration amount of fish can be calculated according to the following formula,

[0083] F t = F c

[0084] F c = F t × C i

[0085] F t is the carbon sequestration amount of a certain fish, Mg; F c is the yield of a certain fish, Mg; C i is the fish carbon sequestration rate, %; wherein C i The value range refers to the relevant literature or carbon sequestration rate test.

[0086] Investigation method: field survey

[0087] Evaluation standard: fish comprehensive carbon sequestration rate standard is shown in the table

[0088]

[0089] c. Fish reef comprehensive carbon sequestration rate

[0090] Index meaning: the fish reef comprehensive carbon sequestration rate is calculated by the carbon sequestration rate of attached shellfish and algae

[0091] The carbon flux of removable organisms generally adopts the biomass back-calculation method. The shellfish and algae carbon sequestration amount evaluation adopts the transformed formula of TANG, et al method:

[0092] C 藻 = P 藻 × 1-h 藻 × w 藻

[0093] C 贝 = P 贝 × a 壳 × 1-h 壳 × w 壳 + P 贝 × a 软 × 1-h软 ×w 软

[0094] C 藻 and C 贝 are the carbon sequestration of macroalgae and shellfish, respectively; P 藻 and P 贝 are the yield of macroalgae and shellfish, respectively; h 藻 , h 壳 , h 软 are the water content of macroalgae, shellfish shell and soft tissue, respectively; w 藻 , w 壳 , w 软 are the carbon content of macroalgae, shellfish shell and soft tissue, respectively; a 壳 and a 软 are the proportion of shellfish shell and soft tissue in total wet weight, respectively.

[0095] At present, the biomass back-calculation method still has certain advantages in evaluating the carbon flux that can be removed by shellfish and algae cultivation in a region or even the whole country. However, this part of carbon does not cover the carbon transported to water and sediments by physiological activities and calcification processes of shellfish and algae. Therefore, in the study of fishery carbon sink function, this part is more suitable for reflecting the basic fishery carbon sink capacity of regional shellfish and algae cultivation.

[0096] Investigation method: field survey

[0097] Evaluation criteria: see table for comprehensive carbon sequestration rate standards of fish reefs

[0098]

[0099] (2) Coral resource performance indicators

[0100] a. Live coral coverage

[0101] Carefully browse each 50 m section of the sample belt image through computer playback software, interpret the bottom type directly below the section, record a data every 0.1 m distance with code, which represents the bottom type directly below the point, a total of 500 points, from which the coverage of live coral is calculated.

[0102] Live coral coverage = points with live coral / 500 × 100%.

[0103] Investigation method: field survey

[0104] Evaluation criteria: see table for live coral coverage standards

[0105]

[0106] b. Coral species

[0107] Hard coral species identification, classification reference to domestic and foreign authoritative books classification method, coral specimen picture, combined with the historical research of large hole and classification data, in the computer picture software careful comparison, observation of coral image on the sample band, reef area close-up photo, identification and classification of hard coral species. Foreign reference to authoritative books include:

[0108] 《Coral of the world》(Verson,2000)、《Staghorn corals of the world》(Wallace,1999);China reference to authoritative books include: 《China Taiwan coral log》, 《China Taiwan coral reef map (upper / lower) 》(Dai Changfeng, 2011), 《China Hong Kong stone coral album》(Chen Naiquan, 2005), 《China animal (coelenterata) coral polyp class stone coral hard coral》Zou Renlin, 《China Xisha Islands coral reef biological atlas》(Huang Hui, 2018).

[0109] Investigation method: field investigation

[0110] Evaluation criteria: as shown in the table below

[0111]

[0112] c. Comprehensive carbon sequestration rate of coral

[0113] Indicator meaning: the carbon sequestration amount of coral can be calculated according to the following formula,

[0114] R t = R c

[0115] R c = R t × C i

[0116] R t is the carbon sequestration amount of a certain coral, Mg; R c is the number of a certain coral, Mg; C i is the carbon sequestration rate of coral, %; wherein C i The value range refers to the relevant literature or carbon sequestration rate test.

[0117] Investigation method: field investigation

[0118] Evaluation criteria: the standard is shown in the table below

[0119]

[0120] (3) Seagrass bed / seaweed bed resource performance index

[0121] a. Macroalgae coverage

[0122] Interpretation of the tape section directly below the large algae, every 0.1 m distance, with code mark record a data, representing the point directly below the use of large algae, a total of 500 points, thus calculating the coverage of large algae.

[0123] Macroalgae coverage = macroalgae occupied points / 500 x 100%

[0124] Evaluation criteria: as follows

[0125]

[0126] b. Macroalgae species

[0127] Evaluation criteria: as follows

[0128]

[0129] c. Comprehensive seaweed / seagrass carbon sequestration rate

[0130] According to the CDM measurement method AR-ACM003, the carbon sink measurement parameters of seagrass bed include the aboveground and underground parts of seagrass, attached organisms on seagrass, organisms in seagrass bed, and organic detritus filtered by seagrass. The seagrass bed carbon sink (Cs) measurement method is mainly:

[0131] C st = C se + C she + C sed

[0132] In the formula, C se is the carbon sequestration of benthic algae in seagrass bed; C she is the carbon sequestration of primary production of seagrass; C sed is the carbon sequestration of captured sediment.

[0133] Investigation method: field investigation

[0134] Evaluation criteria: the standard is shown in the table below

[0135]

[0136] (4) Benthic organism diversity

[0137] a. Benthic organism diversity index

[0138] Index meaning: measuring plankton community can accurately reflect the pollution degree and self-purification of water body, and the diversity index is used to express.

[0139] Benthic animals are collected using 1 / 16 m 2The sample was collected using a Petersen sampler. After opening the sampler and attaching the hook, it was slowly lowered to the bottom of the water. The sampler was then swung left and right to continue lowering the rope until the hook disengaged. The rope was then gently pulled upwards to tighten it until the two sides of the sampler closed. The sampler was then pulled out of the water and placed in a bucket or basin. The two sides of the sampler were then opened to pour the collected sediment into the bucket or basin. Samples were collected twice at each sampling site. The sediment was poured into a container with an 8mm aperture. 2 Inside a standard-sized silk mesh bag, hold the opening of the bag tightly and place it in water, shaking it back and forth to wash away as much mud as possible from the sample. Any large stones or other hard objects can be removed on the spot. If the sample volume is large, it can be washed several times until the mud is removed. Finally, pour the remaining benthic animals and debris from the net into a 1L polyethylene plastic bottle, label it, and take it back to the laboratory for sorting. Remove all visible animals with tweezers, fix them in 75% alcohol, and then classify, count, and weigh them. During indoor identification, try to identify the species down to the smallest level. For arthropods, chironomid larvae should be identified to the species level; for mollusks and oligochaetes, to the genus level; and for aquatic insects and crustaceans, to the family, genus, and species level. Only a few groups, such as leeches, planarians, and aquatic mites, should be identified only to the class level. In general, benthic animal identification is usually done down to the species level. Only a few species that are difficult to distinguish and identify are identified at the species level or above. Then, the number of each species in the two samplings is counted and weighed. The density and biomass of each species are calculated based on the area of ​​the mud sampler.

[0140] Calculation of the Benthic Animal BI Index

[0141] The calculation formula is:

[0142] BI=∑(TV i (N) i ) / N

[0143] TV i N is the dirt tolerance value of the i-th classification unit. i is the number of individuals in the i-th taxonomic unit, and N is the total number of individuals; the evaluation criteria for benthic animal diversity index are shown in the table;

[0144]

[0145] b. Carbon sequestration rate of benthic organisms

[0146] Survey Method: On-site survey

[0147] Evaluation criteria: See the table below.

[0148]

[0149] 2.3 Shoreline Resource Performance Indicators

[0150] (1) Ecological shoreline indicators

[0151] a. Vegetation coverage

[0152] Definition: The ratio of the vertical projection area of all vegetation in the evaluation range to the total area. The statistical range of the coastline resources in this design is within 300 meters of the coastline corresponding to the theoretical minimum tide level.

[0153] Index formula: The definition of vegetation coverage, the calculation formula is as follows

[0154] P = S 植 / S 总

[0155] In the formula:

[0156] P - Vegetation coverage;

[0157] S 植 - The vertical projection area of all vegetation in the evaluation range on the ground (m 2 );

[0158] S 总 - The total area of the evaluation range (m 2 ).

[0159] Investigation method: Field measurement or remote sensing analysis

[0160] Evaluation standard: As shown in the following table

[0161]

[0162] b. Vegetation diversity index

[0163] Index meaning: The plant diversity index is a mathematical tool for quantitatively describing the richness of species, the uniformity of distribution, and the differences between communities in plant communities.

[0164] Index formula: Shannon-Wiener Index (H'), definition: A classic index that takes into account "species richness" and "individual distribution uniformity", based on information theory, originally used to measure "uncertainty", which can be understood here as "the complexity of species composition".

[0165] H' = -∑i=1s(P i × lnP i )

[0166] Where: S = total number of species; P i = The proportion of the number of individuals of the i-th species to the total number of individuals in the community (P i = n i N, n i is the number of individuals of the i-th species, and N is the total number of individuals); ln is the natural logarithm.

[0167] Evaluation Criteria: The following table

[0168]

[0169] c. Vegetation integrated carbon sequestration rate

[0170] Investigation Method: Field survey

[0171] Evaluation Criteria: The standard is shown in the following table

[0172]

[0173] (2) Beach

[0174] a. Beach shoreline occupancy rate

[0175] Investigation Method: Field measurement or remote sensing analysis Evaluation Criteria: The following table

[0176]

[0177] b. Beach width Investigation Method: Field measurement or remote sensing analysis Evaluation Criteria: The following table

[0178]

[0179] c. Beach substrate index Investigation Method: Field measurement or data collection Evaluation Criteria: The following table

[0180]

[0181] d. Beach dynamic stability Investigation Method: Field measurement or remote sensing analysis Evaluation Criteria: The following table

[0182]

[0183] (3) Coastal safety a. Overland wave volume Index meaning: The single-width flow of waves over the top of the dike Investigation Method: Calculation

[0184] Evaluation Criteria: The following table

[0185]

[0186] b. Overall anti-sliding stability

[0187] Index meaning: The ability of the repair engineering structure to resist the sliding caused by horizontal action

[0188] Investigation Method: Calculation

[0189] Evaluation Criteria: The following table

[0190]

[0191] c. seepage stability

[0192] Implication: the ability of the engineering structure to resist loose deformation under the action of seepage water flow

[0193] Investigation method: calculation

[0194] Evaluation criteria: as shown in the table below

[0195]

[0196] 2.4 Social and economic performance indicators

[0197] (1) Social benefits

[0198] a. Public satisfaction

[0199] This indicator is a qualitative indicator. Researchers from different fields are invited to conduct on-site evaluation of marine suitability and develop a qualitative indicator table. In the field, the investigator only needs to check the corresponding column.

[0200]

[0201]

[0202] (2) Economic benefits

[0203] a. Project construction investment

[0204] Converted into investment per meter of coastline.

[0205] Investigation method: data collection and calculation

[0206] Evaluation criteria: as shown in the table below

[0207]

[0208] b. Tourism benefits

[0209]

[0210] 2.3 Analysis of evaluation results

[0211] Using the fuzzy probability evaluation method, the membership degree of the evaluation indicators to different ecological grades is calculated to construct the marine bay ecological evaluation system model. The marine ecological grade values are shown in the table below.

[0212] Judgment of the health status of the study area

[0213] Performance evaluation of marine ecological restoration based on carbon sink analysis Evaluation Excellent 100 Good 80 Medium 60 Poor 40 Bad 20

[0214] Judgment of the performance evaluation grade of marine ecological restoration based on carbon sink analysis

[0215] Evaluation level Excellent Good Medium Poor Bad Score [80,100] (60,80] (40,60] (20,40] (20,0]

[0216] The above merely provides the preferred embodiment of the present application, and is not intended to limit the embodiments and protection scope of the present application. It should be noted by those skilled in the art that, any equivalent replacement and obvious changes made according to the present application description and drawings should be included in the protection scope of the present application.

Claims

1. A performance evaluation system for marine ecological restoration based on carbon sink analysis, characterized in that, It includes, in sequence, a target layer, a criterion layer, a factor layer, and an indicator layer. The target layer takes regional marine ecological restoration projects as a unified goal. The criterion layer includes water ecological performance, marine biological resource performance, shoreline resource performance, and socio-economic performance. The factor layer and the indicator layer are higher and lower level quantitative indicator layers proposed based on the target layer and the criterion layer to directly reflect the overall status of the criterion layer and the factor layer.

2. The marine ecological restoration performance evaluation system based on carbon sink analysis according to claim 1, characterized in that, The factor layer includes hydrodynamic and water quality indicators belonging to the water body ecological performance, fish resource performance indicators, coral resource performance indicators, seagrass / algae bed resource performance indicators and benthic organism resource performance indicators belonging to the marine biological resource performance, ecological shoreline indicators, beach resource indicators and coastal safety indicators belonging to the shoreline resource performance, and social and economic benefit indicators belonging to the socio-economic performance.

3. The marine ecological restoration performance evaluation system based on carbon sink analysis according to claim 2, characterized in that, In the aforementioned indicator layer, the hydrodynamic indicators include tidal volume and water exchange rate; the water quality indicators include dissolved organic carbon, inorganic nitrogen, and suspended sediment concentrations; the fish resource performance indicators include fish diversity index, overall fish carbon sequestration rate, and overall reef carbon sequestration rate; the coral resource performance indicators include live coral coverage, coral species, and overall coral carbon sequestration rate; the seagrass / algae bed resource performance indicators include macroalgae coverage, macroalgae species, and overall algae / seagrass carbon sequestration rate; the benthic biological resource performance indicators include benthic biodiversity index and benthic biological carbon sequestration rate; the ecological shoreline indicators include vegetation coverage, vegetation diversity index, and overall vegetation carbon sequestration rate; the beach resource indicators include beach shoreline occupancy, beach width, beach bottom sediment indicators, and beach dynamic stability; the coastal safety indicators include wave overtopping, overall anti-slip stability, and seepage stability; the social benefit indicators include public satisfaction; and the economic benefit indicators include cost input and tourism revenue indices.

4. The marine ecological restoration performance evaluation system based on carbon sink analysis according to claim 3, characterized in that, The index layer is obtained directly through experiments, satellite remote sensing, field measurements, and model calculations.

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