Offshore ecological restoration method and system based on triploid oyster reef nucleus

Abstract

The invention relates to the field of oyster reef restoration, in particular to an offshore ecological restoration method and system based on triploid oyster reef nuclei, the growth speed of triploid oysters is superior to that of diploid oysters, a stable oyster reef body structure can be formed within 1-2 years, an adhesion matrix is provided for natural native organisms, the restoration period is greatly shortened compared with a traditional restoration method, and the economic benefit is improved. The ecological function can be exerted in a short time; meanwhile, the prefabricated reef core is firm in structure, precise putting and quincunx layout are matched, continuous forming of the reef body can be ensured, and the anti-scouring capacity is remarkably improved compared with traditional loose putting; in addition, the triploid oysters have no breeding season capacity, interspecific competition with local organisms can be avoided, and natural balance of an ecological system in a restoration area can be achieved in cooperation with the promotion effect of the ecological cooperative regulation unit on local biocenosis. And through combination of dynamic monitoring and precise regulation and control, various problems in the repairing process can be found and solved in time, the survival rate of oysters is greatly increased, and then the repairing success rate is remarkably increased.

Description

Technical Field

[0001] This invention relates to the field of oyster reef restoration, specifically a nearshore ecological restoration method and system based on triploid oyster reef nuclei. Background Technology

[0002] Oyster reefs are three-dimensional aggregates formed by the accumulation of live oysters, dead oyster shells, and other reef organisms, distributed in the intertidal or subtidal zone. They have core ecological functions such as purifying water, removing nitrogen, stabilizing coastlines, and providing habitats for more than 200 species of organisms. However, oyster reefs have degraded due to overfishing and coastal development, thus requiring artificial restoration.

[0003] Current technologies for oyster reef restoration often involve placing oyster shells or concrete reefs as substrates, then relying on diploid oyster larvae from the natural sea area to attach and grow, thus restoring the oyster reefs.

[0004] However, when using restoration techniques to restore oyster reefs, common oysters are diploid, making them susceptible to environmental influences during their reproductive period. They also compete with other intertidal organisms, hindering the collaborative construction of native ecological communities. Furthermore, the restoration process cannot monitor the reef's growth status and changes in the surrounding environment in real time, making it difficult to adjust restoration strategies according to actual conditions and easily leading to restoration failure. Therefore, to address these issues, a nearshore ecological restoration method and system based on triploid oyster reef cores is proposed. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve at least one of the technical problems mentioned in the background art, this invention proposes a nearshore ecological restoration method and system based on triploid oyster reef nuclei.

[0006] The technical solution adopted by this invention to solve its technical problem is: a nearshore ecological restoration system based on triploid oyster reef cores, comprising the following steps:

[0007] S1. Triploid Oyster Reef Core Prefabrication Unit: Its core components are substrate carrier + triploid oyster seedlings + bonding and fixing layer. It is also equipped with reef core maintenance device. Before deployment, the prefabricated reef core is placed in a maintenance pool that simulates the environment of the restoration area.

[0008] S2, Precision Delivery Unit: Includes unmanned vessel delivery platform, GPS positioning module and water depth and velocity sensor;

[0009] S3, Dynamic Monitoring Unit: Composed of underwater monitoring sensors, data transmission module and background analysis system;

[0010] S4, Ecological Co-regulation Unit: Includes water purification components and native organism propagation components.

[0011] Preferably, the triploid oyster seedlings in S1 are 1-2cm in size, and are kept for 2-3 weeks before the prefabricated reef core is placed, with a survival rate of ≥90%.

[0012] Preferably, the GPS positioning module in S2 has an accuracy of ±1m, and the reef cores are deployed in a quincunx pattern with an adjacent spacing of 50-80cm.

[0013] Preferably, the underwater monitoring sensors in S3 include a water quality sensor, a reef growth sensor, and a biodiversity sensor, with a sampling frequency of once per day.

[0014] Preferably, the data transmission module in S3 transmits data via 5G / BeiDou satellite, and the background system can automatically issue an alert for abnormal parameters.

[0015] A nearshore ecological restoration method based on triploid oyster reef cores, applicable to any one of claims 1-5, comprising the following steps:

[0016] Q1. Preliminary investigation and scheme design for restoration: Investigate the environmental parameters of the restoration area and determine the restoration scheme;

[0017] Q2. Pre-fabrication and maintenance of triploid oyster reef cores: Prepare a substrate carrier, fix triploid oyster seedlings to form pre-fabricated reef cores, and maintain them in a simulated environment for 2-3 weeks;

[0018] Q3. Precise Deployment of Reef Cores: Using unmanned vessels, reef cores are precisely deployed according to preset coordinates to form a continuous reef framework;

[0019] Q4. Ecological Synergistic Regulation: Deploy submerged plant floating beds and native biological propagation components;

[0020] Q5. Dynamic Monitoring and Repair Adjustment: Monitor repair data in real time and adjust control strategies when anomalies occur.

[0021] Q6. Acceptance of Repair Results and Post-Repair Maintenance: Acceptance will be conducted after 1 year. If the repair is satisfactory, it will be transferred to long-term maintenance.

[0022] Preferably, the repair area in Q1 is adapted to a water depth of 3-10m and a flow velocity of 0.1-1.5m / s.

[0023] Preferably, the porous ceramic particles and shell powder of the matrix carrier in Q2 have a mass ratio of 6:4 and a pore size of 5-20 mm.

[0024] Preferably, the planting density of submerged plants in Q4 is 5-8 plants / m², and the amount of native biological propagation components is 1-2 units / m².

[0025] As a preferred option, the acceptance criteria in step Q6 include: continuous reef coverage ≥70%, oyster survival rate ≥85%, biodiversity increased by more than 50% compared to before restoration, and water quality parameters meeting standards.

[0026] The advantages of this invention are:

[0027] The triploid oysters of this invention grow faster than diploid oysters, forming stable oyster reefs within 1-2 years. This significantly shortens the restoration cycle compared to traditional methods and allows them to perform ecological functions in a short period. Furthermore, the prefabricated reef core structure is robust, and combined with precise placement and a quincunx layout, it ensures continuous reef formation and significantly improves erosion resistance compared to traditional loose placement. In addition, triploid oysters are not disturbed during their reproductive period, avoiding interspecies competition with native organisms. Combined with the promoting effect of ecological synergistic regulation units on native biological communities, it can achieve a natural balance in the restoration area's ecosystem. The combination of dynamic monitoring and precise regulation can promptly identify and resolve various problems during the restoration process, significantly improving oyster survival rates and thus significantly increasing the restoration success rate. This method offers significant advantages over traditional restoration methods, addressing the challenges of using restoration techniques to restore oyster reefs. Common oysters are diploid, their reproductive period is easily affected by the environment, and they compete with wild oysters, hindering the collaborative construction of native ecological communities. Additionally, the inability to monitor reef growth and surrounding environmental changes in real time during restoration makes it difficult to adjust restoration strategies based on actual conditions, easily leading to restoration failure. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a flowchart of the oyster reef restoration system of the present invention;

[0030] Figure 2 This is a flowchart of the oyster reef restoration method of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0033] This application discloses a nearshore ecological restoration system based on triploid oyster reef cores. It includes the following steps:

[0034] S1. Triploid Oyster Reef Core Prefabrication Unit: Its core components are substrate carrier + triploid oyster seedlings + bonding and fixing layer. It is also equipped with reef core maintenance device. Before deployment, the prefabricated reef core is placed in a maintenance pool that simulates the environment of the restoration area.

[0035] S2, Precision Delivery Unit: Includes unmanned vessel delivery platform, GPS positioning module and water depth and velocity sensor;

[0036] S3, Dynamic Monitoring Unit: Composed of underwater monitoring sensors, data transmission module and background analysis system;

[0037] S4, Ecological Co-regulation Unit: Includes water purification components and native organism propagation components.

[0038] Among them, S1, triploid oyster reef core prefabrication unit

[0039] The goal of this unit is to produce living building materials with high survival rates, adapted to the environment, and possessing initial ecological functions.

[0040] Substrate carrier preparation: The preferred carrier material is a mixture of porous ecological ceramic granules and shell powder at a mass ratio of 6:4, which is then sintered or bonded into shape. The molded body is designed as an irregular sphere or cube with a diameter of approximately 20-30 cm, featuring well-developed internal pores with a pore size controlled between 5-20 mm to provide a large attachment surface area and complex habitat. The carrier itself is rich in calcium and has a neutral pH, which is conducive to oyster attachment and growth.

[0041] Oyster seedling fixation: Select healthy triploid oyster seedling attachment sheets with a shell length of 1-2 cm. Use an environmentally friendly underwater adhesive to attach the attachment sheets to the porous surface or inner / outer surface of the substrate carrier, forming an adhesive layer. This step ensures the stability of the oyster seedlings during transportation and the initial stage of deployment, preventing them from detaching.

[0042] Reef core preservation: The prepared prefabricated reef cores are transferred to a reef core preservation device, which is an indoor or nearshore preservation tank equipped with a circulating water, temperature control, and feeding system. Key parameters such as water temperature, salinity, and turbidity in the preservation tank are set to be highly similar to the target restoration area and the survey results from step Q1, simulating the restoration zone environment. Under this environment, the oyster seedlings are preserved for 2-3 weeks. During this period, the triploid oyster seedlings adapt to the environment and continue to grow, with a stable survival rate of ≥90%, and their shells become more robust, thus becoming qualified living reef cores.

[0043] S2, Precision Delivery Unit

[0044] This unit ensures that the reef core is accurately and rationally placed in the predetermined seabed location to form an effective structure.

[0045] Deployment Platform: A medium-sized unmanned vessel is used as the deployment platform. Its deck is equipped with an automatic lifting robotic arm and a reef core storage and transportation hopper, which has good stability and track tracking capabilities.

[0046] Sensing and Positioning: The unmanned surface vessel integrates a GPS positioning module (accuracy ±1m) and a water depth and current sensor. Before deployment, a series of deployment coordinate points are generated on the electronic nautical chart based on the reef layout diagram designed according to the restoration plan (e.g., a quincunx layout).

[0047] Deployment Operation: The unmanned surface vessel autonomously navigates to the target coordinates, with water depth and current sensors providing real-time feedback on seabed information. A robotic arm then gently releases the individual reef cores onto the seabed. As designed, the deployment spacing between adjacent reef cores is controlled at 50-80cm. This quincunx-shaped layout ensures both the continuity and stability of the reef structure while providing ample space for organisms to expand, efficiently forming a continuous reef framework.

[0048] S3, Dynamic Monitoring Unit

[0049] This unit is responsible for the data acquisition, transmission, and analysis throughout the entire repair process, enabling intelligent management that is assessable and controllable.

[0050] Sensor Deployment: Deploy an underwater monitoring sensor network at key locations on representative reef cores or within the reef area. This network includes:

[0051] Water quality sensor: monitors dissolved oxygen, pH, temperature, turbidity, chlorophyll a, etc.

[0052] Reef growth sensor: It can be used to take pictures regularly with an underwater camera, or to monitor the growth of individual oysters and changes in reef structure through an acoustic dimensional measuring instrument.

[0053] Biodiversity sensors: mainly underwater high-definition cameras and environmental DNA samplers, used to monitor the species and abundance of fish, large invertebrates, etc.

[0054] Data transmission and processing: All sensor data is transmitted back to the backend analysis system in real time or near real time via a data transmission module using a 5G near-shore network or BeiDou satellite communication. The system has a built-in data analysis model, and the sampling frequency can be set to once per day or higher.

[0055] Early warning and decision support: The backend system automatically compares data with preset health thresholds. Once parameters are abnormal, the system can automatically send an early warning signal to management personnel, indicating potential risks of hypoxia, pollution, or disease, providing real-time data support for the repair and adjustment in step Q5.

[0056] S4, Ecological Coordination and Regulation Unit

[0057] This unit aims to accelerate the ecological restoration process in the restoration area and enhance ecosystem diversity and stability.

[0058] Water purification components: Floating beds of salt-tolerant submerged plants are placed upstream or in the internal voids of the reef area. The planting density is controlled at 5-8 plants / m². These plants can further absorb nitrogen and phosphorus nutrients from the water, inhibit algal blooms, and work synergistically with the oyster reef to purify the water.

[0059] Native organism propagation components: Deploy artificially designed biological reef burrows or propagation modules with different pore sizes and structures at a density of 1-2 per m². These components can provide additional spawning, nursery, and refuge sites for native organisms such as sea urchins, crabs, and small fish, rapidly enhancing biodiversity in the reef area and forming a more complex food web.

[0060] A nearshore ecological restoration method based on triploid oyster reef cores includes the following steps:

[0061] Q1. Preliminary investigation and scheme design for restoration: Investigate the environmental parameters of the restoration area and determine the restoration scheme;

[0062] Q2. Pre-fabrication and maintenance of triploid oyster reef cores: Prepare a substrate carrier, fix triploid oyster seedlings to form pre-fabricated reef cores, and maintain them in a simulated environment for 2-3 weeks;

[0063] Q3. Precise Deployment of Reef Cores: Using unmanned vessels, reef cores are precisely deployed according to preset coordinates to form a continuous reef framework;

[0064] Q4. Ecological Synergistic Regulation: Deploy submerged plant floating beds and native biological propagation components;

[0065] Q5. Dynamic Monitoring and Repair Adjustment: Monitor repair data in real time and adjust control strategies when anomalies occur.

[0066] Q6. Acceptance of repair results and subsequent maintenance: Acceptance will be conducted after 1 year. If the results are satisfactory, the project will be transferred to long-term maintenance.

[0067] Q1, Preliminary Investigation and Solution Design

[0068] A detailed survey of the target restoration area was conducted to confirm a suitable water depth of 3-10 meters and a flow velocity of 0.1-1.5 m / s. The survey also included information on substrate type, historical ecological data, and background pollutant levels. Based on the survey results, the restoration area, total amount of reef core material to be deployed, layout plan, and specific ecological control strategies were determined.

[0069] Q2. Pre-fabrication and maintenance of triploid oyster reef cores

[0070] Based on the environmental parameters determined in Q1, the matrix carrier is mass-produced according to the method of the aforementioned system S1 unit, wherein the ratio of porous ceramic particles to shell powder is 6:4, and triploid oyster seedlings with a size of 1-2cm are fixed; then the prefabricated reef core is placed in a maintenance pool in a simulated restoration area environment and intensively maintained for 2-3 weeks to ensure its high survival rate and adaptability.

[0071] Q3. Precise delivery of reef cores

[0072] Using an unmanned surface vessel (USV) deployment platform equipped with a GPS positioning module (accuracy within ±1m) and water depth and current velocity sensors, the maintained reef core is transported to the restoration area. The USV then automatically and precisely deploys the core according to a pre-set quincunx-shaped layout coordinate system, constructing a continuous and stable initial framework for the oyster reef on the seabed.

[0073] Q4. Ecological Coordination and Regulation

[0074] Immediately after or concurrently with the placement of the reef core, ecological enhancement measures will be implemented. Floating plant beds will be deployed at a planting density of 5-8 submerged plants per m². Simultaneously, native biological propagation components will be deployed at a density of 1-2 per m² to introduce and supplement diverse ecological niches to the reef area. The submerged plant floating beds will be coupled with submerged plants, such as Vallisneria natans and Myriophyllum spicatum, using artificial ecological floating bed technology to absorb eutrophic substances like nitrogen and phosphorus, purify the water, and provide habitats for organisms. The native biological propagation components will provide habitats for fish, shrimp, and shellfish to reproduce, grow, and escape predators. Seedlings of native economic species such as fish, shrimp, and crabs will be systematically released into the sea to increase fishery resource density, form an "algae-shellfish-fish" symbiotic system, and restore marine biological resources.

[0075] Q5. Dynamic monitoring and repair / adjustment

[0076] A dynamic monitoring unit is activated, collecting data once daily via a network of sensors for water quality, reef growth, and biodiversity. This data is then transmitted back to the backend system via 5G / BeiDou satellite. Based on real-time data and system alerts, management personnel dynamically adjust management strategies. For example, if eutrophication is detected, the area of ​​floating plant beds may be temporarily increased; if a specific organism is found to be deficient, corresponding propagation components may be added.

[0077] Q6. Acceptance of repair results and subsequent maintenance

[0078] Approximately one year after the restoration project was completed, a systematic acceptance test was conducted. The acceptance criteria focused not only on the structural integrity of the engineering work but also, and more importantly, on its ecological impact.

[0079] Reef structure: The continuous coverage of the reef is ≥ 70%.

[0080] Core species: Triploid oysters and naturally attached diploid oysters with a total survival rate of ≥ 85%.

[0081] Biological communities: The biodiversity index of fish, large invertebrates, and other species in the reef area has increased by more than 50% compared to before restoration.

[0082] Environmental benefits: Key water quality parameters have met the predetermined targets.

[0083] After successful acceptance, the project enters the long-term maintenance phase, which mainly relies on monitoring units for regular observation and low-intensity adaptive management until the ecosystem can fully achieve self-sustainability.

[0084] Before restoring oyster reefs, a detailed on-site survey of the target restoration area is conducted. Key aspects include confirming the water depth (3-10 meters), suitable flow velocity (0.1-1.5 m / s), and investigating crucial environmental parameters such as substrate type, historical ecological data, and background pollutant levels to determine if the area meets the conditions for oyster reef growth. Based on the survey results, the restoration area, total amount of reef cores to be deployed, specific layout plans (e.g., quincunx layout parameters), and detailed ecological control strategies are further determined, providing a precise basis for subsequent implementation stages.

[0085] Based on the environmental parameters determined in the preliminary survey, the substrate carrier is produced in batches according to the preset formula, in which the mass ratio of porous ceramic particles to shell powder is 6:4. Then, healthy triploid oyster seedlings with a size of 1-2cm are fixed on the surface of the substrate carrier with a marine biocompatible adhesive to form standardized prefabricated reef cores. In order to improve the survival rate and environmental adaptability of the reef cores after deployment, the prefabricated reef cores are placed in a maintenance pond with simulated water temperature, salinity and water quality environment of the restoration area for 2-3 weeks of intensive maintenance to ensure that the oyster seedlings are firmly attached and adapt to the environment of the restoration area, laying the foundation for rapid growth after subsequent deployment.

[0086] Then, using an unmanned surface vessel (USV) platform equipped with a high-precision GPS positioning module and water depth and current velocity sensors, the maintained reef cores are first transported to the restoration area. The USV navigates automatically according to the pre-set quincunx layout coordinates and uses an automated deployment robotic arm to complete the automated deployment of the reef cores, ensuring that the spacing between adjacent reef cores meets the preset standards. During the deployment process, the water depth and current velocity sensors monitor environmental parameters in real time. If the parameters exceed the adaptation range, the system automatically adjusts the deployment position to prevent the reef cores from being washed away and displaced by waves and currents, ultimately forming a continuous and stable initial framework of oyster reefs on the seabed.

[0087] After the reef core is deployed or simultaneously, ecological control measures will be implemented immediately: on the one hand, floating beds of submerged plants will be laid around the reef at a standard of 5-8 plants / m², so that the submerged plants can absorb nutrients in the water, reduce pollution load, and improve water quality; on the other hand, artificial fish nests, shellfish attachment substrates and other native biological propagation components will be deployed in the gaps between the reefs at a density of 1-2 units / m², so as to provide habitats for native fish, crustaceans and other organisms, supplement diverse ecological niches, and promote the coordinated construction of the reef ecosystem.

[0088] After the dynamic monitoring unit is activated, a monitoring network consisting of water quality sensors (to monitor dissolved oxygen, pH, etc.), reef growth sensors (to monitor oyster shell length, etc.), and biodiversity sensors (to monitor plankton, benthic organisms, etc.) collects key data from the restoration area once a day. The data is transmitted in real-time to the backend analysis system via a 5G / BeiDou satellite transmission module. The system has a built-in data threshold model that automatically issues warnings when monitoring parameters are abnormal. Based on real-time monitoring data and warning information, management personnel dynamically adjust management strategies, such as increasing the area of ​​floating plant beds to improve water quality and supplementing the supply of appropriate propagation components to compensate for biological deficiencies, promptly addressing problems encountered during the restoration process.

[0089] One year after the completion of the restoration project, a systematic acceptance test will be conducted. This test will not only focus on the structural integrity of the reef but also emphasize ecological effects. Specific acceptance indicators include: continuous reef cover ≥70%, total survival rate of triploid oysters and naturally attached diploid oysters ≥85%, biodiversity index of the reef area increasing by more than 50% compared to before restoration, and key water quality parameters meeting standards. After passing the acceptance test, the project will enter the long-term maintenance phase, primarily relying on dynamic monitoring units for regular observations, while implementing low-intensity adaptive management until the reef ecosystem achieves complete self-sustainability, thus fulfilling the restoration goals.

[0090] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A near-shore ecological restoration system based on triploid oyster reef nuclei, characterized in that: It comprises the following steps: S1, triploid oyster reef core prefabricated unit: its core components are matrix carrier + triploid oyster seed + bonding layer, and it is also equipped with reef core maintenance device. The prefabricated reef core is placed in a maintenance pool simulating the environment of the restoration area before being released; S2, accurate release unit: including unmanned ship release platform, GPS positioning module and water depth and flow rate sensor; S3, dynamic monitoring unit: composed of underwater monitoring sensor, data transmission module and background analysis system; S4, ecological synergistic regulation unit: including water quality purification component and local biological proliferation component.

2. The offshore ecological restoration system based on triploid oyster reef nucleus according to claim 1, characterized in that: The triploid oyster seed in S1 is 1-2 cm in size, and the prefabricated reef core is maintained for 2-3 weeks before being released, with a survival rate of ≥90%.

3. The offshore ecological restoration system based on triploid oyster reef nucleus according to claim 1, characterized in that: The GPS positioning module in S2 has an accuracy of ±1 m, and the reef cores are released in a meadow shape with a spacing of 50-80 cm.

4. The offshore ecological restoration system based on triploid oyster reef nucleus according to claim 1, characterized in that: The underwater monitoring sensor in S3 includes water quality sensor, reef growth sensor and biodiversity sensor, with a sampling frequency of 1 time / day.

5. The offshore ecological restoration system based on triploid oyster reef core according to claim 1, characterized in that: The data transmission module in S3 transmits data through 5G / Beidou satellite, and the background system can automatically issue parameter abnormality warning.

6. A method for offshore ecological restoration based on triploid oyster reef nuclei, the method being applicable to any one of claims 1-5, characterized in that: It comprises the following steps: Q1, pre-restoration investigation and scheme design: investigate the environmental parameters of the restoration area and determine the restoration scheme; Q2, triploid oyster reef core prefabrication and maintenance: prepare matrix carrier, fix triploid oyster seed to form prefabricated reef core, and maintain for 2-3 weeks in simulated environment; Q3, accurate release of reef core: accurate release according to preset coordinates through unmanned ship to form continuous reef skeleton; Q4, ecological synergistic regulation: release submerged plant floating bed and local biological proliferation component; Q5, dynamic monitoring and restoration adjustment: real-time monitoring of restoration data, and adjustment of regulation strategy when abnormal Q6, acceptance of restoration effect and later maintenance: acceptance after 1 year, and transfer to long-term maintenance after passing.

7. The offshore ecological restoration method based on triploid oyster reef nucleus according to claim 1, characterized in that: The restoration area in Q1 is adapted to water depth of 3-10 m and flow rate of 0.1-1.5 m / s.

8. The offshore ecological restoration method based on triploid oyster reef nucleus according to claim 1, characterized in that: The matrix carrier in Q2 has a mass ratio of porous ceramic and shell powder of 6:4, and a pore size of 5-20 mm.

9. The offshore ecological restoration method based on triploid oyster reef nucleus according to claim 1, characterized in that: The planting density of submerged plants in Q4 is 5-8 plants / m², and the release amount of local biological proliferation component is 1-2 pieces / m².

10. The offshore ecological restoration method based on triploid oyster reef nucleus according to claim 1, characterized in that: The acceptance indicators in Q6 include: reef coverage rate ≥70%, oyster survival rate ≥85%, biodiversity improvement of more than 50% compared with before restoration, and water quality parameters meeting the standards.

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