60 results about "Fish habitat" patented technology

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 present invention provides a method and system for rapid evaluation of fish habitat suitability based on deep learning, which relates to the field of river ecological technology, including: using a physical mechanism model of fish habitat suitability to simulate and obtain the evaluation results of the physical mechanism model of river fish habitat suitability corresponding to each flow condition, and thereby establish a fish habitat suitability training sample set; using the sample set to train a deep learning model for predicting river fish habitat suitability; identifying flow-sensitive intervals and establishing a fish habitat suitability incremental learning training sample set, and performing incremental learning training on the deep learning model. The present invention establishes a mapping relationship between the distribution of fish habitat suitability in the river and factors such as flow rate through autonomous learning in the data samples simulated by the physical mechanism model, thereby achieving a rapid and accurate evaluation of the distribution of fish habitat suitability in the river. The present invention reduces the time and cost investment of traditional prediction technologies, and has significant practicality and broad application prospects.

The invention relates to the technical field of marine ecological informatics, and discloses a habitat suitability prediction method and system for marine ecological management.The habitat suitability prediction method for marine ecological management.The habitat suitability prediction method for marine ecological management.The habitat suitability prediction method for marine ecological managementincludes the steps that traditional knowledge data of fishermen is obtained, and audio data is transcribed into a text format through a natural language processing technology; generating a traditional knowledge graph containing the corresponding relationship between the observation characteristics and the fishing results; carrying out canonical correlation analysis on surface observation characteristics and vortex physical parameters in the traditional knowledge graph, and converting traditional knowledge into quantitative expression of a vortex parameter space based on a mapping matrix; and adopting a random forest to integrate multi-source prediction results, taking a traditional knowledge prediction rule and a physical model calculation result as input features, and outputting a middle-layer fish habitat probability distribution diagram. The technical problem that traditional knowledge and a vortex physical model are difficult to effectively integrate for middle-layer fish habitat prediction is solved.

The invention relates to the field of fish habitat evaluation, in particular to a spawning migration type fish full life history stage suitable habitat inversion method based on a hydrodynamic model, and the method mainly comprises the steps: (1) collecting spawning migration type fish data, hydrological data and topographic data; (2) determining life history stages of the fishes and the actual number of the fishes; (3) establishing one-dimensional hydrodynamic models of different life history stages; (3) grouping the water depth and the flow velocity of each life history stage, and calculating the number frequency of fishes in each interval; (4) constructing a habitat suitability curve of water depth and flow velocity; and (5) evaluating a suitable habitat. According to the method, the suitable habitat of the spawning migration type fish in the whole life history stage can be efficiently and accurately evaluated, and protection strategy formulation and measure implementation of aquatic organisms are facilitated.

The invention discloses a fish habitat real-time monitoring system based on Internet of Things. Comprising a data acquisition module used for acquiring fish habitat data, a communication networking module used for transmitting the acquired data, an analysis early warning module used for analyzing the data, a comprehensive management module used for assisting device operation and a propaganda education module used for propagandizing habitat education. Water quality parameters, hydrological parameters, fish activity data and human activity data of a fish habitat are collected, analysis data are generated in an analysis and early warning module, an ecological health index of the fish habitat is calculated, an early warning signal is generated, ecological risks of a fish living environment are predicted, and an ecological health index thermodynamic diagram is generated in a comprehensive management module. And real-time monitoring is completed under cooperation of multiple modules. The fish ecological resource environment is subjected to multi-source collection and analysis through the multi-source sensing technology, the correlation between fish habitat data and fish population distribution is deeply excavated, information of the habitat is accurately grasped, the monitoring accuracy is high, and the risk pre-judgment capability is high.

This invention discloses a method for evaluating the suitability of fish habitats, belonging to the technical field of fish habitat suitability evaluation. The method includes: determining a target area; collecting conditional data of the target area to obtain regional conditional data; splitting and merging the target area according to the regional conditional data to obtain various evaluation areas; collecting regional evaluation analysis data based on the evaluation area information; analyzing the regional evaluation analysis data to obtain supplementary collection items and suitability values ​​corresponding to each evaluation area; generating corresponding evaluation curves based on the supplementary collection items and suitability values; collecting data from the target area according to the supplementary collection items to obtain supplementary collection data; inputting the supplementary collection data into the evaluation curve for matching to obtain a representative suitability value; classifying each evaluation area into equivalent areas to obtain equivalent areas; setting suitability correction values ​​corresponding to each equivalent area; and setting evaluation vectors based on the suitability correction values ​​corresponding to each equivalent area.

The invention relates to the technical field of water conservancy projects, and discloses a construction method of a river fish habitat model, comprising the following steps: S1, preparing files of river terrain, upstream incoming flow and downstream water level; s2, determining the flow velocity and the water depth suitability index of the target fish; s3, constructing a hydrodynamic model; s4, outputting the water depth, the flow velocity and the coordinates of each unit according to a grid unit dry-wet judgment criterion; s5, based on the suitability index, the water depth and the flow velocity, calculating the weighted available area of the habitat and the distribution of the comprehensive suitability index of the water depth and the flow velocity; s6, performing habitat quality grading on the grid units; s7, calculating a Simpson index L according to the water depth and the flow velocity of each unit, and evaluating the diversity of the waterpower habitat of the river channel; and S8, outputting various distribution diagrams and a fish habitat calculation table. The method can accurately quantify the influence of factors such as water depth and flow velocity on the fish habitat, synchronously evaluate the habitat quality and habitat diversity, and provide an effective method for dominant fish habitat simulation and protection.

This invention provides a method and system for rapidly evaluating the suitability of fish habitats for various environments based on deep learning, which belongs to the field of river ecology technology. [Solution] The method includes the steps of: conducting a simulation using a physical mechanism model of fish habitat suitability, obtaining evaluation results of the physical mechanism model of fish habitat suitability in the river channel corresponding to various flow rate conditions, and constructing a sample set for learning fish habitat suitability; training a pre-constructed deep learning model for predicting fish habitat suitability in the river channel using the sample set for learning fish habitat suitability; and identifying the flow rate influence sensitivity range and constructing a sample set for incremental learning fish habitat suitability.

This invention discloses a method for creating fish habitats based on swarming effects, belonging to the fields of fish ecological engineering and water conservancy engineering. Existing technologies for creating fish habitats suffer from incomplete quantification of swarming behavior and a lack of quantitative correlation with engineering design parameters, leading to habitats that are difficult to match the needs of fish swarming. This invention quantifies spatial aggregation, movement synchronization, and turbulent adaptability, calculates a comprehensive swarming index and a group spatial demand coefficient, establishes a direct conversion model between swarming behavior indicators and habitat design parameters, and determines flow field control methods and structural layout methods based on the comprehensive swarming index and the group spatial demand coefficient, thereby creating fish habitats. This invention can comprehensively characterize swarming behavior, scientifically guide engineering design, and improve habitat applicability and utilization.

The present invention relates to the technical field of marine aquaculture equipment, and discloses a cage structure and installation method thereof that can increase fish habitat friendliness. The cage structure includes jacket legs, breakwater net legs, an inner aquaculture net, an outer breakwater net, and an anchoring foundation. The jacket legs and breakwater net legs are paired and anchored to the seabed via an anchoring foundation, with multiple pairs of jacket legs and breakwater net legs forming a polygon at the anchoring points on the seabed. The inner aquaculture net is tied to the jacket legs to form an inner polygonal column, and the outer breakwater net is tied to the breakwater net legs to form an outer polygonal column. The inner aquaculture net and the outer breakwater net are divided into a pressure relief zone, a transition zone, and a habitat zone at the same height interval to improve fish habitat friendliness. Through mechanical analysis and aquaculture research, the present invention, based on the nonlinear distribution of ocean current energy along water depth, vertically divides the net into multiple functional zones to accommodate fish swimming in the upper layer and inhabiting the lower layer.

The invention discloses a fish habitat restoration system, and relates to the technical field of ecological floating island restoration. Comprising a restoration traction piece, a root system amplification piece is installed on the restoration traction piece, and the root system amplification piece is used for amplifying ecological plant root systems; a positioning piece is mounted on the repair traction piece; the positioning piece is used for positioning the root system amplification piece; an anti-gnawing part is mounted on the repairing traction part; an anti-dragging part is mounted on the anti-gnawing part; the root amplification part is matched with the repair traction part to facilitate root amplification through the amplification holes, the diameter of the amplification holes is larger, the rooting resistance can be reduced, and the coconut fiber matrix can be prevented from leaking during the initial growth of the plant in cooperation with the positioning control of the positioning part; the problems that an existing fish habitat repairing system is inconvenient to automatically control and increase plant root system amplification and is also inconvenient to prevent plant root systems from being pulled are solved.

A scheduling method for a daily ecological flow variation of a river reach based on an overlap rate of suitable habitats for fish, includes: drawing a baseline flow-scheduled flow increment-fish habitat suitability overlap rate distribution map; and acquiring a daily mean flow of a current day to serve as a baseline flow, searching the baseline flow-scheduled flow increment-fish habitat suitability overlap rate distribution map to obtain a range of scheduled flow increments with an overlap rate of suitable habitats for fish greater than a preset value, and in combination with the baseline flow and the range of the scheduled flow increments, obtaining a flow scheduling range for a next day. The present disclosure quantitatively evaluates the overlap rate of the suitable spawning region of the fish in different flow variations under different baseline flows, thereby obtaining a constraint value for the ecological flow variation of the river reach.

The invention discloses a method for evaluating fish habitat and ecological flow regulation and control based on a data-driven fuzzy model, belongs to the field of water conservancy and hydropower engineering environmental protection and ecological hydraulics, and particularly relates to a method for evaluating fish habitat and ecological flow regulation and control. According to the method, a hydraulic parameter membership function is automatically deduced from on-site fish behavior observation data through a fuzzy C-means clustering (FCM) algorithm, a fuzzy rule base is constructed, a habitat suitability index (HSI) model under the synergistic effect of multiple factors such as water depth and flow velocity is established, and an environment flow threshold value based on weighted available area (WUA) maximization is output. According to the method, the defects that a traditional habitat model excessively depends on expert experience and multi-factor interaction processing is insufficient are overcome, objective quantification of model parameters and accurate capture of a complex nonlinear relation are achieved, quantifiable and species-specific decision support is provided for cascade reservoir ecological scheduling, and the method has the advantages of being high in practicability and easy to popularize. And hydroelectric benefits and ecological protection requirements are effectively balanced.

The invention discloses a river habitat index determination method based on vorticity and fish energy consumption coupling, and the method comprises the steps: firstly extracting the geometric features of a river bed, vegetation and reefs, and constructing a fish habitat physical model; three types of vorticity coefficients are obtained through tests and calculation, and the total vorticity is obtained through quantification and superposition; calculating actual energy consumption in combination with fish cruise basic energy consumption and a vorticity correction coefficient, and obtaining energy consumption and vorticity suitability indexes through an exponential function; and finally, constructing a comprehensive suitability index by adopting a geometric mean function, formulating a grading standard, and realizing habitat suitability judgment. The method is suitable for river habitat heterogeneity and hydrological dynamic changes, suitable habitats can be identified, targeted design of repair measures is achieved, regulation and control indexes are provided for fish habitat design of water conservancy and channel engineering, result reliability and repeatability are guaranteed by means of standardized processes and multi-source verification, and the method is suitable for popularization and application. Fish habitat protection and ecological function recovery in the area are facilitated.

The utility model discloses a rice fish comprehensive breed field fish class habitat sheltering device, concretely relates to aquaculture technical field, including sheltering shell, and the both ends of sheltering shell are connected with the habitat shell, and one habitat shell top fixedly connected with sunshading board, and the bottom of another habitat shell is fixedly connected with connecting plate, and the one side of sheltering shell and habitat shell is equipped with the entrance, and the other side of sheltering shell and habitat shell is equipped with the export, and the inside of sheltering shell and two habitat shells are fixedly connected with a plurality of baffle, and the inside of sheltering shell and habitat shell is penetrated with the feeding pipe. The utility model discloses through setting up feeding subassembly and installing mechanism, can combine feeding with oxygen -enrichment, can carry out oxygen -enrichment simultaneously in the feeding process, and sufficient water dissolved oxygen content helps fish to keep active feeding state, and simultaneously through the spiral effect of spiral blade can increase the contact area of field soil, help to keep the good stability of sheltering shell and two habitat shells in the use process.

The invention relates to the technical field of fish ecological protection, and discloses a fish habitat building device which comprises an inhabiting assembly and a connecting assembly, the inhabiting assembly comprises a main frame, inlet assemblies and a travel assembly, the interior of the main frame is a cavity, a plurality of mounting ports are formed in the main frame, and the inlet assemblies are correspondingly mounted on the mounting ports; the inhabiting assemblies are installed on the mounting openings, the entering assembly is suitable for fishes to enter the inhabiting assemblies, the outgoing assembly is installed on one of the mounting openings, the outgoing assembly is suitable for fishes to swim out of the inhabiting assemblies, and the connecting assembly is detachably connected with the outgoing assembly on the inhabiting assemblies. The impact force of water flow on a single structure is reduced, the multiple fixing structures ensure that the whole structure is not prone to loosening under the action of the water flow after assembly, the long-term stability of the structure is improved, the arrangement scale can be flexibly adjusted according to the water area after dam disassembly, and the large-range habitat restoration requirement is met.

The present application relates to the technical field of computer, especially to a method for quickly evaluating the influence of reservoir regulation on the fish habitat area in the downstream. The method comprises the following steps: obtaining the natural environment data of the river channel in the area to be studied; checking out the boundary of the area to be studied, generating a triangular mesh and performing mesh smoothing processing; obtaining a triangular mesh graph with elevation interpolation surface data; constructing a two-dimensional hydrodynamic model; selecting a variety of water level and flow rate working condition combinations, simulating the hydrological and hydrodynamic characteristics of the downstream river channel, extracting water depth and flow rate surface data as key environmental factors, and exporting the mesh data of the simulation results; using binary classification method to binarize the environmental factors, determining the proportion of the number of meshes within the range of the key environmental factors in the total number of meshes, and obtaining the fish habitat area in the downstream river channel under various reservoir regulation combinations. The present application can quickly evaluate the spatial distribution of the fish habitat in the downstream river channel affected by reservoir regulation.

The invention discloses a fish habitat water flow structure restoration method, and belongs to the technical field of water conservancy and hydropower ecological protection and fishery resource protection. The method comprises the following steps: S01, analyzing the climate change trend of a target water area; s02, establishing a fish demand model; s03, predicting possible flow velocity change, depth change and area expansion and reduction conditions of the target water area by adopting hydrodynamic simulation software; s04, a set of self-adjustable water flow structure repairing scheme is designed; s05, the water flow structure repairing scheme is visually displayed; s06, carrying out water flow structure repair scheme trial points in the target water area, and adjusting and perfecting a water flow structure repair scheme; and S07, evaluating the effect of the repair measures, and adjusting and optimizing the water flow structure repair scheme according to the evaluation result. Climate change, fish ecological requirements and hydrodynamic simulation are deeply coupled, a self-adjustment optimization mechanism is integrated in the restoration method, and an innovative solution is provided for long-term stability of the fish habitat.

The invention relates to the field of fish habitat evaluation, in particular to a spawning migration type fish habitat key influence factor inversion method based on a partial least square structure equation model, and the method mainly comprises the steps: (1) collecting spawning migration type fish habitat data and an environmental factor multi-year data set; (2) carrying out standardization processing on the data; (3) establishing a partial least square structure equation model framework of the spawning migration type fish habitat; (4) respectively carrying out partial least square structure equation model operation on spawning migration type fish habitat distribution and habitat quality key influence factors; and (5) result analysis and key influence factor identification. According to the method, the key factors influencing the spawning migration type fish habitat in the natural environment can be efficiently and accurately identified, and strategy formulation and measure implementation for river habitat function protection and improvement are facilitated.

The utility model provides a kind of fish nest row component of air-permeable grating, including frame structure, the frame structure is provided with baffle, the baffle is separated into multiple hollow chambers by fish nest row frame body;The frame structure is provided with at least two first through holes in the direction of water flow, the baffle is provided with second through hole in the direction of water flow, the first through hole of the upstream frame structure is equipped with hole-plugging structure, when water flow is big, it can be washed away and the silt in chamber by hole-plugging structure being washed off, by being equipped with first through hole on frame structure, second through hole is set on baffle, hole-plugging structure is set in first through hole, when water flow is relatively small, hole-plugging structure and frame structure form a closed buffer area, it is favorable for fish habitat, when water flow impact force is greater than torsional spring elastic force, water flow can wash away hole-plugging structure, so that the silt in the inside of frame structure is taken away.

The present invention discloses a method for constructing a smart marine ranch on uninhabited islands and reefs, which relates to the field of marine aquaculture technology. The method generates electricity by comprehensively utilizing wind, solar, and ocean energy to provide power for aquaculture, management, and monitoring systems. Surplus electricity is used to electrolyze seawater to produce hydrogen, and hydrogen batteries are manufactured for energy storage. A robust energy supply is achieved by constructing an energy allocation system. Sustainable fishing of fish resources is achieved by creating fish habitats. A robust supply of clean energy is achieved through an energy storage, transmission, and supply network. Automation and intelligence of fish farming are achieved by combining intelligent lifting cages with open water surfaces. Unmanned operation and management are achieved through big data, cloud computing, and the Internet of Things.

The application discloses a kind of fish habitat dynamic suitability evaluation method, consider the dynamic change characteristics of annual non-constant water depth, flow rate, water temperature and other habitat habitat factors of river, according to the dynamic response curve of habitat factor change of fish habitat suitability, the change process of each region suitability and weighted available area in year is calculated in river, on this basis, the number of days suitable for each region in fish spawning stage in river is counted, the time satisfaction coefficient and suitable time duration days located in the interval of suitability are calculated, and the annual change curve of dynamic suitability total area is described.Through the above calculation method, the adaptability of fish spawning stage to river in the whole year can be more reasonably evaluated, so as to more scientifically guide the operation of ecological regulation.

The application discloses a kind of fish fattening field suitable ecological flow and system of deducing method, including the following steps: constructing the index system of hydraulic habitat of fattening field for quantifying habitat patch spatial heterogeneity, the hydraulic habitat index value of different flow conditions is analyzed and calculated using two-dimensional hydrodynamic model in the study water area, the flow corresponding to the most suitable hydraulic habitat index value of the fish habitat studied is selected as the suitable ecological flow of fattening field.The present application not only considers the target organism but also considers other organisms in the river, and is more conducive to creating suitable flow conditions for multiple species coexistence, and has certain scientific significance and reference value for fish fattening field protection and ecological restoration.

The invention discloses a fish habitat building method based on a group swimming effect, and belongs to the field of fish ecological engineering and hydraulic engineering. In the prior art, the fish habitat building has the problems that the quantification of the fish habitat is not comprehensive, and the association with the quantification of engineering design parameters is lacked, so that the habitat is difficult to match the fish swarm swimming demand. According to the method, the space aggregation degree, the motion synchronism and the turbulence adaptability are quantified, the comprehensive cluster index and the group space demand coefficient are calculated, a direct conversion model of group travel as an index and habitat design parameters is established, and the flow field regulation and control mode and the structural layout mode are determined based on the comprehensive cluster index and the group space demand coefficient. Therefore, a fish habitat is built. According to the method, group travel behaviors can be comprehensively described, engineering design is scientifically guided, and the applicability and utilization rate of the habitat are improved.

The invention discloses a port water area sensitive fish intelligent monitoring method and system based on image perception. The method comprises the following steps: collecting field sensitive fish images, and expanding indoor test images; constructing a fish form database; sensitive fish types are identified through images; key feature points of fish forms are dynamically tracked, and fish behaviors are monitored in real time; therefore, the port water fish habitat environment is evaluated. Aiming at the environmental characteristics of high turbidity, low light transmittance and strong man-made interference of the port sea area, the method combines the morphological characteristics of sensitive fishes, and adopts an optical shooting combined image acquisition means to construct a sensitive organism image data set of the port sea area; the method comprises the following steps: focusing four Yangtze River upstream sensitive fishes, performing three-dimensional reconstruction on geometric morphology models of various fishes, and establishing a convolutional neural network model of target detection, classification, counting and distribution characteristics of the sensitive fishes in the port sea area; and an intelligent identification technology for sensitive organisms in a port sea area is researched and developed.

The invention provides a watershed fish habitat matching method and system based on model simulation, and the method comprises the steps: obtaining environment monitoring data of different monitoring points in a watershed in a preset time period, and constructing a watershed environment scene data set in combination with the landform basic data of the watershed; performing multi-dimensional feature analysis processing on the data set to generate a fish habitat demand feature set; performing cross-scale feature matching based on the environment feature evolution sequence and the fish habitat demand feature set, and constructing a habitat suitability incidence matrix; performing space-time planning processing on the habitat suitability incidence matrix to generate a habitat suitability index distribution map; and determining an optimal habitat space range of the target fishes, performing ecological protection priority ranking on the optimal habitat space range, and generating a watershed fish habitat planning result. According to the invention, the practicability and pertinence of the planning result of the watershed fish habitat are improved.

The present application relates to the technical field of fishery resources monitoring, in particular to a method suitable for big water surface group monitoring and counting of aar fish, according to the type of water area, the grid dynamic distribution of acoustic signal receiving station is carried out, the joint positioning method of more than three points based on TDOA, combined with the weighted least square method to calculate the accurate coordinate of the marked aar fish, and the behavior of the aar fish is judged, so as to master the activity area of the individual fish after the individual fish cluster through the marking of the individual fish, combined with the water depth, water temperature and water quality data, the characteristics of the fish habitat are obtained, and the fish activity range and rule are obtained. Based on the behavior habit of fish, the monitoring range is divided, the population monitoring and counting are carried out through the fish sonar scanning, the problems of big water surface fish population monitoring difficulty and fish population repeated counting are reduced, and the precision of the monitoring and counting result is improved. The scheme of the present application has the characteristics of non-damage, full coverage, high precision and standardization, and is suitable for big water surface aar fish resource investigation, evaluation of aar fish population release effect and ecological fishery management.

The application discloses a fish habitat restoration system and relates to the technical field of ecological floating island restoration.The fish habitat restoration system comprises a restoration traction part, a root system expansion part is installed on the restoration traction part, and the root system expansion part is used for expanding ecological plant root systems; a positioning part is installed on the restoration traction part; the positioning part is used for positioning the root system expansion part; an anti-biting part is installed on the restoration traction part; and an anti-pulling part is installed on the anti-biting part.The root system expansion part is used in cooperation with the restoration traction part to expand root systems through expansion holes, the expansion holes have a larger aperture, and the root system expansion part can reduce rooting resistance and can prevent coconut fiber matrix from leaking during the initial growth of plants by cooperating with the positioning control of the positioning part, so as to solve the problems that the current fish habitat restoration system is not convenient for automatically controlling the expansion of plant root systems and is not convenient for preventing plant root systems from being pulled.

The invention relates to the technical field of remote sensing ecology, in particular to a fish diversity charting method and device based on hyperspectral data and eDNA, and the method comprises the steps: obtaining an eDNA sample and a hyperspectral remote sensing image of a target water area, calculating a fish diversity index of the target water area according to the eDNA sample, and calculating the fish diversity index of the target water area according to the eDNA sample; extracting spectral band information corresponding to the eDNA sample from the hyperspectral remote sensing image; a spectral feature library of fish diversity is constructed according to spectral band information corresponding to the eDNA samples, a fish diversity prediction model is constructed based on the spectral feature library and a machine learning regression model, and the fish diversity prediction model comprises a mapping relation between spectral features and fish diversity established based on the machine learning regression model; utilizing the fish diversity prediction model to predict the fish diversity of any water area, and generating a fish diversity spatial distribution diagram of any water area according to the fish diversity. Therefore, the problems of limited sampling points, poor characterization effect of the fish habitat and the like in related technologies are solved.