78 results about "Fish resources" patented technology

The invention relates to the technical field of water conservancy and hydropower, in particular to a corridor type supersaturated gas quick release device which comprises a concrete bottom plate, a plurality of concrete enclosing walls are arranged on the top face of the concrete bottom plate, and the concrete enclosing walls are sequentially arranged at intervals from inside to outside; a clearance between every two adjacent concrete enclosing walls forms a corridor area; a plurality of water pressure and air pressure damage assemblies are arranged in the innermost circle of concrete enclosing wall, a plurality of energy dissipation bodies are filled in the innermost circle of concrete enclosing wall, and the water pressure and air pressure damage assemblies are distributed on the top face of the concrete bottom plate in an array mode; a water passing hole is formed in each circle of concrete enclosing wall; a plurality of flow limiting plates are arranged in the corridor area at intervals, and flow passing structures are arranged on the flow limiting plates. By the adoption of the structure, multi-flow-state distribution areas such as turbulent flow, backflow and rotational flow can be formed, the medium contact area of supersaturated gas is greatly increased, precipitation of the supersaturated gas is accelerated, and positive significance is achieved for protecting aquatic organisms and fish resources of downstream rivers.

The invention discloses a reservoir ecological scheduling method integrating fish spawning and foraging demands, and the method comprises the steps: determining a scheduling target river reach based on the fish inhabiting and breeding habitat feature information and spawning site distribution information of a to-be-researched reservoir region; constructing a hydrodynamic model according to the dispatching target river reach; acquiring first hydrological demand information for scheduling the target fishes to lay eggs in the breeding season and second hydrological demand information for scheduling the target fishes to find food in the non-breeding season; on the basis of a hydrodynamic model, the first hydrological demand information and the second hydrological demand information, determining the ecological flow discharged by the reservoir; determining reservoir water level regulation and control information based on the water level change demand information for scheduling the target fishes to spawn in the breeding season and foraging in the non-breeding season; and performing reservoir ecological scheduling according to the reservoir discharged ecological flow and the reservoir water level regulation and control information. According to the technical scheme, the adverse effect of reservoir dispatching operation on fish oviposition and foraging can be relieved, and fish resource recovery and biodiversity protection are facilitated.

The invention belongs to the technical field of fishery resource management, and discloses a fishery resource collaborative proliferation method based on a large water surface environment. The method comprises the steps of collecting water area feature data; the water area characteristic data comprises water quality data, substrate data, sound wave data and a water area image; aquatic organism monitoring is carried out according to the sound wave data, and aquatic organism data are obtained; combining the water quality data, the substrate data and the aquatic organism data to formulate a proliferation recovery strategy; performing fish resource evaluation according to the water area image to obtain fish school resource data; in combination with the water quality data, the substrate data, the aquatic organism data and the fish school resource data, preferentially selecting proliferation objects; based on the multiplication object, the multiplication release capacity is determined; according to the method, the accuracy and the intelligent level of fishery resource management are improved, strategies can be dynamically adjusted to cope with environmental changes, the population relationship in an ecological system is balanced, and the sustainable development capability of fishery resources is effectively improved.

The invention discloses an intelligent survey system and method for deep-sea middle-layer fish resources. According to the method, terrain detection signal data of a target water area and fish resource detection signal data of a target water layer are obtained through multi-beam sonar equipment, and the fish school distribution condition of the target water layer is determined accordingly. A target water area three-dimensional terrain model is constructed by using terrain detection signal data, and an underwater robot cruising strategy is determined by combining fish school distribution. And the underwater robot obtains fish school image data according to the strategy, identifies fish types and numbers to obtain fish resource data, and finally transmits the data to a water surface control center through an underwater sound wave communication technology. Intelligent and efficient investigation of deep-sea middle-layer fish resources is achieved, powerful support is provided for deep-sea fishery resource research and development, and wide application prospects and important practical significance are achieved.

The present invention belongs to the ecological field and provides a reservoir ecological regulation method that meets the requirements of fish spawning occurrence and fish egg density, including: obtaining the natural reproduction characteristic information and habitat information of fish species that produce drifting eggs in the regulated target river section, and determining the regulated target fish species; obtaining the first key habitat information required when the spawning occurrence probability of all fish species that produce drifting eggs and the regulated target fish species is not less than a first preset threshold; obtaining the second key habitat information required when the fish egg density of all fish species that produce drifting eggs and the regulated target fish species is not less than a second preset threshold; determining a reservoir ecological regulation plan according to the first key habitat information and the second key habitat information of the river section; and carrying out reservoir ecological regulation according to the reservoir ecological regulation plan. Through the above technical solution, the adverse impact of reservoir regulation operation on the spawning of fish species that produce drifting eggs can be alleviated, which is beneficial to promoting the restoration of fish resources and the protection of biodiversity.

The invention provides a primer probe combination and a kit for detecting eDNA of acipenser Yangtze River and application of the primer probe combination and the kit, and belongs to the technical field of molecular biology and molecular ecology. The invention designs two groups of primer probe combinations for detecting eDNA of acipenser Yangtze River, and the nucleotide sequences of the primer probe combinations are respectively shown as SEQ ID No.1-6. According to the method, eDNA in a water sample to be detected is extracted, ddPCR amplification is carried out by utilizing the primer probe combination, if positive amplification can occur, it is judged that the water sample contains the eDNA of the Yangtze River sturgeons, and then tracking of behavior tracks of Yangtze River sturgeon schools is achieved. The primer probe combination disclosed by the invention can be used for carrying out specific detection on target DNA fragments of the acipenser pratus in a culture water body and a field water body, the sensitivity is relatively high and is 0.07 copies / mu L, and the primer probe combination can be widely applied to the fields of eDNA detection of the acipenser pratus and resource protection of rare fishes.

The invention discloses a reservoir ecological flow configuration method based on multi-section water transfer and multi-target fish collaborative protection, which comprises the following steps: S1, determining a hydrological sensitive area and an ecological sensitive area based on water transfer influence constraint and fish resource distribution data, superposing the hydrological sensitive area and the ecological sensitive area to construct a habitat evaluation model, determining a typical fish key habitat, and constructing a reservoir ecological flow configuration model; determining a target spawning site; s2, integrating the two-dimensional hydrodynamic model and the fish habitat model, calculating habitat hydraulic power demands and flow pulse demands of different fishes in the spawning period, constructing an ecological water demand process in the spawning period, and calculating basic hydrological demands of ecological base flow for supplementing a non-spawning period; and S3, carrying out ecological water demand coupling on a plurality of spawning sites with overlapped spawning periods, and determining a reservoir ecological flow collaborative configuration scheme. According to the method, on the basis of the particularity of multi-section water transfer disturbance and multi-target collaborative protection of a water source area of western-line engineering, the ecological water demand of typical fishes is researched, and a reservoir ecological flow configuration scheme is determined.

The application discloses a reservoir ecological flow allocation method based on multi-section water diversion and multi-target fish collaborative protection, which comprises the following steps: S1, determining a hydrological sensitive area and an ecological sensitive area based on water diversion influence constraints and fish resource distribution data, superimposing the hydrological sensitive area and the ecological sensitive area to construct a habitat evaluation model, determining a key habitat of a typical fish, and further determining a target spawning ground; S2, integrating a two-dimensional hydrodynamic model and a fish habitat model, calculating habitat hydraulic requirements and flow pulse requirements of different fishes in a spawning period, constructing an ecological water demand process in the spawning period, and simultaneously calculating an ecological base flow to supplement basic hydrological requirements in a non-spawning period; and S3, coupling ecological water demand for multiple spawning grounds overlapping in the spawning period, and determining a reservoir ecological flow collaborative allocation scheme. The method is based on the particularity of multi-section water diversion disturbance and multi-target collaborative protection of the west line project water source area, studies ecological water demand of typical fishes, and determines a reservoir ecological flow allocation scheme.

The utility model discloses a liftable fish collecting and luring device and a fish resource investigation system, the liftable fish collecting and luring device comprises a fish collecting cage, a fish luring lamp is arranged in an inner cavity of the fish collecting cage, the fish collecting cage is provided with a fish collecting port and a fish outlet, the fish outlet is provided with a fish outlet opening and closing mechanism, and the fish outlet opening and closing mechanism is provided with a fish luring lamp. The top of the fish collecting cage is provided with at least one movable pulley block used for being matched with a steel wire rope of the lifting mechanism, each movable pulley block comprises at least one movable pulley, the liftable fish collecting and luring device further comprises fixed pulleys in one-to-one correspondence with the movable pulleys, and the lifting mechanism comprises an electric hoist. Steel wire ropes of the electric hoists sequentially penetrate through the upper ends of the corresponding fixed pulleys and the lower ends of the movable pulleys and then are connected with the installation frame, and the fixed pulleys are installed on the installation frame. According to the utility model, aquatic ecology investigation work of a target water area can be efficiently collected in real time.

The invention discloses a large-scale fish resource detection method based on multi-frequency sound waves and an AI algorithm. The method comprises the following steps: correcting an original echo signal into a signal under a standard environment characteristic in combination with the environment characteristic; extracting and normalizing frequency spectrum characteristics and time sequence distribution information of the echo signals; obtaining frequency response characteristic data of fish types and associating spatial position information of the fish types; obtaining a fish swarm proportion through three-dimensional point cloud clustering analysis; identifying a fish school abnormal behavior type and an area range, and formulating a fish school abnormal intervention strategy; predicting a time point, an area range, an abnormality type and a reason of the abnormal behavior of the fish school in a future time period; and in combination with Mahalanobis distance and fish school behavior prediction, evaluating the effect of the fish school abnormal intervention strategy, and dynamically adjusting the fish school abnormal intervention strategy. According to the invention, the precision and efficiency of fish resource detection can be improved, the requirements of dynamic monitoring and precise management of fish schools in a large-range water area are met, and the healthy and sustainable development of a water area ecological system is further promoted.

The invention belongs to the field of ecology, and provides a reservoir ecological scheduling method capable of meeting fish spawning occurrence and roe density requirements, which comprises the following steps: acquiring natural reproduction characteristic information and habitat information of fishes laying drifting roes in a scheduling target river reach, and determining the scheduling target fishes; acquiring first key habitat information required when the spawning occurrence probability of all the fishes laying the drifting eggs and the scheduling target fishes is not less than a first preset threshold value; acquiring second key habitat information required when the roe density of all the fishes laying the drifting roes and the scheduling target type of roes is not less than a second preset threshold value; according to the river reach first key habitat information and the river reach second key habitat information, determining a reservoir ecological scheduling scheme; and performing reservoir ecological scheduling according to the reservoir ecological scheduling scheme. By means of the technical scheme, the adverse effect of reservoir dispatching operation on spawning of the fishes laying the drifting eggs can be relieved, and fish resource recovery and biodiversity protection are facilitated.

The invention belongs to the technical field of water ecological protection and water resource management, and particularly provides a cascade reservoir operation ecological benefit evaluation method based on a habitat model, and the method comprises the steps: collecting the topographic data of a downstream fish spawning site of a cascade reservoir, the actual measurement hydrological data of a hydrological station, and the biological data of target fishes; performing unstructured triangular mesh division on the research river reach by adopting a finite volume method, and simulating flow velocity and water depth distribution of a research area through a continuity equation and a momentum equation; according to the biological data of the target fish, a suitability curve of the flow velocity and the water depth is constructed, and the habitat suitability index HIS of each grid is calculated in combination with the flow velocity and water depth data output by the hydrodynamic module; and calculating an effective available area WUA and an overall suitability index OSI based on the HSI value for ecological benefit assessment. The method comprehensively considers the influence of the cascade reservoirs on the correlation factors, accurately evaluates the ecological benefits, and provides a scientific basis for ecological scheduling of the cascade reservoirs and fish resource protection.

The high-frequency sound wave fish driving device comprises a main body structure and a modular buoy structure arranged below the main body structure, the main body structure comprises a main frame body, the main frame body is connected with the modular buoy structure through a fastening bolt, and a solar cell panel and a mainframe box are arranged on the main frame body; a controller, a plurality of connectors and a fixing rod are arranged on the mainframe box, a cross is arranged at the bottom of the fixing rod, driving propellers are arranged at the ends of the cross, the connectors are connected with a waterproof plug, and the waterproof plug is connected with a high-frequency generator through an extension line. With the adoption of the structure, the modular buoy structure can be flexibly combined and adjusted and is suitable for carrying fish driving equipment with different powers; the driving mode is divided into two fixed-point cruising modes, the fish driving requirement of the tail water area can be met more easily, and the automatic fish driving efficiency is greatly improved; the operation and maintenance efficiency of hydropower station equipment is improved, fish resources are protected, and the comprehensive ecological and environment-friendly benefits of a hydropower hub are improved.

The invention relates to a small river habitat restoration effect evaluation method, and aims at solving the problems of habitat damage, habitat fragmentation and the like caused by hydroelectric development to formulate restoration targets of restoring river connectivity, guaranteeing ecological base flow and constructing a stable river ecosystem. The method comprises the following steps: firstly, monitoring a river, then monitoring fish resources and an ecological environment, carrying out special investigation on ecological restoration measures, and finally, constructing an evaluation index system from the dimensions of river connectivity, habitat quality, biodiversity, ecological bearing capacity and the like based on monitoring data. Scientific quantitative evaluation is realized, support is provided for engineering optimization, and river ecological protection and restoration technology development can be promoted.

This application discloses a comprehensive assessment method and system for multi-source data management and correction of watershed fish resources. The method includes: extracting multi-dimensional features from a first data matrix to obtain a first feature matrix; classifying species data based on anomaly scores, outputting verification results, and correcting the first feature matrix to obtain a second feature matrix; acquiring environmental DNA sequencing data and corresponding environmental data; obtaining a first eDNA dataset from the environmental DNA sequencing data through ecological screening; correcting the species in the first eDNA dataset to obtain a second eDNA dataset; fusing the second eDNA dataset with the second feature matrix; calculating biodiversity indices and analyzing community structure; analyzing long-term trends in population and community structure; and generating a comprehensive assessment report. This application achieves full-process automation and intelligence from data quality control and fusion to assessment, significantly improving the accuracy and efficiency of watershed fish resource assessment.

The application discloses a fish resource monitoring method and system based on sonar images and electronic equipment, and the fish resource monitoring method comprises the following steps: acquiring sonar images of a fish pond; detecting fish targets in more than two frames of the sonar images and tracking the fish targets; and determining the number of the fish targets in the fish pond according to the tracking result. Through the above steps, the fish resource monitoring method can accurately monitor the number of the fish targets in the fish pond, and does not cause adverse effects on the growth environment of the fish during the monitoring process.

The present invention provides an intelligent fishing-type river fish resource investigation device and method, comprising: a fishing main body unit, an automatic floating and sinking mechanism, a fish resource identification camera, a remote communication device, and an intelligent controller; the driving end of the automatic floating and sinking mechanism is connected to the fishing main body box and is used to drive the fishing main body unit to sink below the water surface or lift above the water surface; the intelligent controller is respectively connected to the fish outlet opening and closing mechanism, the fishing and attracting lamp, the automatic floating and sinking mechanism, the fish resource identification camera, and the remote communication device. The intelligent fishing-type river fish resource investigation device and method provided by the present invention utilize the intelligent Internet of Things mode between components to automatically float and sink and catch fish regularly, and with the help of an intelligent camera and a background fish intelligent identification platform, continuous and comparable original data of the same section can be obtained, which is more efficient and intelligent than the traditional manual on-site fishing operation.

A movable marine fishing device comprises a support, a fixed ring plate, a movable ring plate and a lifting table, a solar cell panel is arranged above the support, an air bag is connected to the outer side of the support, a circle of supporting ring is arranged on the outer side of the air bag, and the lower end of the solar cell panel is perpendicularly connected with the supporting ring through a stand column; the lower end face of the supporting ring is perpendicularly connected with an opening and closing ring plate, a lifting fishing table is arranged in the opening and closing ring plate, a bottom net is arranged at the bottom of the opening and closing ring plate in a surrounding mode, and a lifting system is arranged on the support and connected with the lifting fishing table. The device can be arranged in the ocean, fish resources are obtained regularly in an automatic fishing mode, fishermen only need to take the fish resources regularly, manpower and material resources are saved, and the benefits of the fishermen are increased.

The present invention discloses a bionic conger eel for marine ranch environmental monitoring, including a bionic conger eel body, the bionic conger eel body including a head, a trunk, a dorsal fin, an anal fin, and a caudal fin connected in sequence, the head being a three-dimensional hollow shell, with a power supply, a micro storage, an image processing microcomputer, a control module, and a plurality of collectors placed inside, the trunk including an alternately connected rotating part and a bionic flexible underactuated tail, and the end of the head close to the trunk is connected to the end of the bionic flexible underactuated tail close to the head through the alternately connected rotating part. The present invention has the advantages of low energy consumption, high bionics, and flexible swimming, maintains high mobility and stability, and has good environmental integration, utilizes the good fluid shape of the bionic conger eel, can flexibly cross the seabed slit area and mobile monitor the water quality indicators of the marine ranch, and can be applied to the marine ranch complex environment fish resource assessment, water quality monitoring, aquarium viewing, and other fields.

The invention discloses an intelligent intermittent fishing operation management method and system based on lamplight purse seine trapping. A fish behavior spatio-temporal evolution graph is constructed by acquiring fish resource survey data of a fishing destination of a target fishing boat and fish dynamic response data after arrangement of a lamplight purse seine, future gathering tropism change of a fish school is predicted, and the actual trapping abundance and the expected trapping abundance of the lamplight purse seine are determined according to the future gathering tropism change. When the actual trapping abundance is lower than the expected trapping abundance, in combination with water body environment data and fingerling space-time distribution sequence data, identifying multi-source environment interference factors such as natural enemy interference factors and water body environment interference factors, monitoring each interference factor in real time, evaluating interference intensity change, and constructing an interference intensity change curve; and generating an intermittent fishing operation strategy of the target fishing boat. According to the invention, intelligent regulation and control of fishing operation can be realized, the trapping efficiency is improved, invalid fishing is reduced, and the application value is good.

The invention relates to the technical field of aquatic animal group marking, and discloses a fish scale marking method which comprises the following steps: (1) ablating scales of a to-be-marked fish body by using laser to form a marked pattern; (2) after the ablation operation is executed, dipping a medicament to wipe the marked pattern; the medicament comprises the following components in percentage by mass: 1-3% of a coloring agent, 5-10% of chitosan, 1-3% of an antibacterial agent and the balance of a phosphate buffer solution; and (3) standing to finish marking. According to the method, laser ablation and special medicament treatment are combined, a lasting mark can be formed on the surface of the fish body, the method has the remarkable advantages of being high in mark retention rate, low in operation cost and small in influence on the fish body, and a new technical choice is provided for fishery management and fish resource protection.

This invention proposes a data analysis-based method and system for assessing fish resources in reservoirs, belonging to the field of resource assessment. The method includes collecting ecological characteristic data and population characteristic parameters of introduced and native fish populations in the reservoir; calculating niche overlap indices between introduced and native fish populations in both spatial and trophic dimensions, and integrating these to obtain a comprehensive niche difference index; calculating the population growth potential of each population and obtaining a fitness difference index; processing the comprehensive niche difference index and fitness difference index to obtain a coexistence stability score and determining the coexistence stability level of the two populations; acquiring time-series data of the niche overlap index, extracting fluctuation characteristic parameters, and generating a fish resource assessment report based on the fluctuation characteristic parameters and the coexistence stability level. This invention can comprehensively assess niche differences between populations.

The present invention provides an experimental device and method for fish fry and spawning suitable for feeding fry from the Guanjiang River. The device comprises a main outlet trough and an auxiliary outlet trough, with a simulated lake pool provided between the main outlet trough and the auxiliary outlet trough. A diversion port on one side of the main outlet trough is connected to one side of the simulated lake pool, and the other side of the simulated lake pool is connected to the head of the auxiliary outlet trough. The tail ends of the main outlet trough and the auxiliary outlet trough are connected to a water collection trough, and the head of the main outlet trough is connected to a water inlet pipe. An arc-shaped isolation net is also provided in the middle of the simulated lake pool, and the isolation net divides the simulated lake pool into a spawning area and a nursery area. This device provides a scientific basis for the rational development and utilization of lake fish resources and is conducive to the formulation of more scientific and reasonable fish management policies. It is also conducive to protecting and restoring the natural ecological environment and promoting the sustainable development of lake fish resources.

The invention discloses a watershed fish resource multi-source data management and correction comprehensive evaluation method and system. The method comprises the following steps: performing multi-dimensional feature extraction on a first data matrix to obtain a first feature matrix; classifying the species data based on the abnormal score, outputting a rechecking result, and correcting the first feature matrix to obtain a second feature matrix; environment DNA sequencing data and corresponding environment data are obtained; the method comprises the following steps: ecologically screening environmental DNA sequencing data to obtain a first eDNA data set; correcting species in the first eDNA data set to obtain a second eDNA data set; fusing the second eDNA data set with the second feature matrix; calculating a biodiversity index and analyzing a community structure; analyzing the long-term change trend of the population and the community structure; and generating a comprehensive evaluation report. According to the method, the full-process automation and intelligentization from data quality control and fusion to evaluation are realized, and the accuracy and efficiency of river basin fish resource evaluation are remarkably improved.

The present invention provides a control method for improving the continuity of the habitat for hatching and feeding of drifting fish eggs, including: collecting basic data on control working conditions; calculating the hydrodynamic conditions along the hatching channel; calculating the water temperature along the hatching channel, predicting the drift time required for the fish eggs to complete hatching; calculating the drift age of the fish eggs along the hatching channel, predicting the drift distance required for the fish eggs to complete hatching based on the drift age and the drift time, and then locating the position where the fish eggs have completed hatching; locating the fish egg hatching channel according to the drift distance required for the fish eggs to complete hatching and the position where the fish eggs have completed hatching, analyzing the habitat conditions of the fish egg hatching channel and the water area after hatching, judging whether the water area is suitable for feeding after the fish eggs have completed hatching, and using the current control working condition as a recommended control scheme for improving the continuity of the hatching and feeding of drifting fish eggs when it is judged to be suitable. The control method proposed by the present invention can ensure the continuity of key life history processes of fish eggs, which is beneficial to the protection of fish resources.

The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a fish dam-passing fish collecting device site selection method, which comprises the following steps: S1, collecting and analyzing construction conditions; s2, investigating fish resources; s3, investigating a fish migration route; s4, selecting an alternative area; s5, investigating the environment of the alternative region; s6, screening alternative areas; according to the method, the alternative areas suitable for construction are gradually screened out according to the migration habit and swimming ability of the target fish school and the actual hydrological data and geographic data of the river channel in sequence, so that the obtained site can ensure the passing efficiency of the target fish, and the operation efficiency of the fish collecting device is improved; and meanwhile, a TOPSIS method is adopted to comprehensively consider conditions such as the construction cost and environmental influence factors of each alternative area, and an optimal construction address which comprehensively considers multiple parties and can meet the fish school passing efficiency, reduce the construction cost and reduce damage and influence on the natural environment is selected from the alternative areas.

The application discloses a water taking ecological scheduling method based on fish early resource protection and belongs to the technical field of environmental protection of water crossing engineering. The method comprises the following steps: (1) monitoring fish early resources, and acquiring fish early resource biomass distribution data of a water taking section and each water layer of an upstream and a downstream; (2) obtaining fish early resource loss amount by using multi-dimensional space-time parameter coupling loss amount analysis; optimizing water taking head design to minimize fish early resource loss amount; and (3) establishing an ecological-hydraulic coupling multi-objective optimization decision model, calculating fish early resource loss amount in real time, and screening a scheduling scheme considering ecological protection and engineering efficiency. The application solves the problem that ecological protection and engineering efficiency are difficult to be considered in traditional technology by dynamic scheduling and engineering structure innovation, and provides a scientific and quantitative solution for sustainable utilization of water resources in a basin.

The application discloses a marine economic fish resource evaluation platform based on multi-source data fusion. The platform sets a target water area layer and multi-period monitoring, uses a sonar detection device to collect data to generate first fish school characteristics, collects images through an underwater camera device and generates second fish school characteristics through a preset image recognition model; a fish school characteristic matrix is constructed based on time window analysis, noise time periods are screened by using matrix similarity discrimination; the recognition process of the noise image set is dynamically adjusted in edge segmentation parameters, and the resource evaluation of economic fish is carried out by fusing and correcting the recognition result. Through multi-source data fusion analysis, difference comparison of fish school characteristics and dynamic image parameter adjustment, the application effectively improves the comprehensiveness, reliability and accuracy of fish school characteristic evaluation in complex water environment, can provide real-time dynamic data support for fishery resource management and marine ecological protection, and has a wide application prospect.

This application discloses a simulation method, system, device, and storage medium for fish community survey sampling. The method includes: acquiring hydrodynamic environmental data and historical ecological baseline data of fish in a target sea area; determining the adaptive grid topology and fish species migration response coefficients of each monitoring unit in the target sea area based on the hydrodynamic environmental data and the historical ecological baseline data of fish; identifying the core area of ​​fish resource aggregation; constructing a multi-species coupled dynamic model of fish; generating a temporal series of the spatial distribution of community structure for each monitoring unit; fusing and constructing a multi-dimensional state temporal series of the ecosystem; generating a species diversity thermodynamic field temporal series based on the multi-dimensional state temporal series of the ecosystem and a preset uncertainty quantification algorithm, and outputting a sampling station layout scheme that prioritizes coverage of highly heterogeneous areas of the fish community. This invention improves the accuracy and efficiency of marine fish community surveys through dynamic simulation and uncertainty analysis, and can support efficient sampling station optimization.

The invention provides a water diversion engineering water intake fish early-stage resource hydraulic distribution method and device based on a water permeable barrier. The device comprises the water permeable barrier, an upper restraining structure, a lower restraining structure and a control system. The permeable barrier is formed by splicing modular curtain units, the upper portion of the permeable barrier is connected between the anchoring pier and the adjustable supporting rod through a bearing main cable, and the lower portion of the permeable barrier is fixed to the underwater ground anchor through a connecting piece. During operation, data are monitored through the water level sensor, the telescopic amount of the supporting rod and the length of the main cable are adjusted in a linkage mode, the vertical gradient of the barrier changes in a self-adaptive mode, curved surface flow guiding and rising water flow are formed, on the premise that the influence on the water taking amount of the water taking opening is reduced, hydraulic sorting and guiding conveying of fish early-stage resources are achieved, and entrainment losses are effectively reduced. The invention provides a water intake fish early-stage resource entrainment loss prevention and control technology based on a hydraulic separation and curved surface diversion principle, and provides a new technical approach for realizing fish resource protection in water diversion engineering.