79 results about "Fish habitat" patented technology

The invention relates to the technical field of fish habitat treatment, in particular to a river fish habitat restoration method based on stair dam dismantling, which comprises the following steps: acquiring stair dam parameters, hydrological data and fish habitat demand data of a target river; constructing a habitat suitability curve, a habitat suitability index and an effective habitat area model of the fish habitat before dam dismantling; designing a plurality of groups of stair dam dismantling schemes, and simulating hydrological condition changes after dam dismantling in combination with a hydrodynamic model; according to the method, habitat suitability curves, a weighted available area method and river connectivity indexes under different dam dismantling schemes are calculated, a multi-objective optimization model is established to screen an optimal scheme, ecological benefits and engineering cost are comprehensively considered, the optimal dam dismantling scheme can be scientifically selected, a dam body with the maximum contribution to improvement of the ecological benefits is preferentially dismantled, and the dam dismantling efficiency is improved. And meanwhile, part of the dam foundation is reserved to reduce the influence of sediment discharge on the downstream, so that the engineering cost is reduced to the maximum extent while the ecological restoration target is achieved.

The invention relates to the technical field of mountainous river fish habitat habitat restoration, and relates to a mountainous river fish habitat restoration method based on numerical simulation optimization, comprising: acquiring habitat data of a mountainous river fish habitat, and performing preliminary ecological restoration measures on the mountainous river fish habitat; constructing a numerical simulation model to predict the erosion and deposition evolution result of the fish habitat in the mountain river after the preliminary ecological restoration in a set period, and identifying an area of which the erosion and deposition evolution degree meets a preset threshold value in the set period; and carrying out riverbed substrate transformation on the identified area based on the target fish, evaluating the habitat improvement effect under the combined action of the preliminary ecological restoration measure and the riverbed substrate transformation through a habitat suitability model, and completing the restoration of the fish habitat in the mountain river based on the evaluation result. According to the method, dredging, spur dike and substrate transformation are combined, and numerical simulation optimization is combined, so that the effectiveness, continuity and scientificity of restoration of the fish habitat in the mountain river are improved.

The invention belongs to but is not limited to the technical field of ecological environmental protection, and discloses a river fish habitat connectivity assessment method, which comprises the following steps: collecting historical site data of target river fish and bioclimatic data influencing river fish distribution to establish a variable set; the method comprises the following steps: screening variables without collinearity by utilizing VIF, constructing a species distribution model of fishes in a target river by utilizing a machine learning algorithm, and screening environmental factors with relatively high contribution degree of the model; according to a machine learning sub-model selected by AUC and TSS, establishing a set model and simulating HS of target river fish habitat suitability distribution; dam information of the target evaluation drainage basin is collected, and a tree connectivity index (DCI) is calculated; stacking the HS and the DCI, calculating a habitat connectivity index (FRCI) of the fish in the target river, and evaluating the habitat connectivity. According to the method, the habitat suitability, the structure connectivity and the function connectivity are considered, the credibility and the preciseness of evaluation of the habitat connectivity are improved, and a scientific basis and a practical tool are provided for protection and management of a river ecosystem.

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.

The invention discloses a fish habitat ecological monitoring device and a monitoring method thereof.The device comprises a shell, a sensor cluster, a sealing assembly and a power generation assembly, the sensor cluster is arranged on the shell, a fish inlet is formed in one end of the shell, a bottom cylinder, a detection assembly and the sealing assembly are arranged in the shell, and the power generation assembly is connected with the shell; the sensor cluster and the detection assembly are electrically connected with the power generation assembly. The detection assembly can detect roes laid by female individuals in a target fish school, continuously shoot the fishes in the spawning period to store sufficient data for analyzing the overall condition of the fish school, and can also analyze the state of the roes laid by the fishes to assist in judging the population state. Fish spawns under the protection of the shell, and the spawns are stored in the collecting tank and can be conveniently taken out for research subsequently.

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.

The present invention provides a method for accurately locating the spawning grounds of schizothoracine fish, comprising: step 1, determining the study area; step 2, determining the sexual maturity stage based on the egg diameter and the stage of gonad development, and then determining whether spawning has occurred based on whether the eggs are emptied and whether the parent fish's anal fin is broken, thereby determining the spawning time; step 3, based on the study area determined in step 1, identifying the river section of the spawning ground of the genus Gymnosoma schizothoracine fish during the spawning period of the genus Gymnosoma schizothoracine fish determined in step 2; step 4, based on the spawning ground section determined in step 3, accurately locating the spawning ground: determining the specific time of spawning within the spawning period obtained in step 2; after determining the specific spawning time, accurately locating the spawning ground of the genus Gymnosoma schizothoracine fish based on the bottom soil differences of the river section of the spawning ground of the genus Gymnosoma schizothoracine fish. The present invention accurately locates the spawning grounds of schizothoracine fish, fills a gap, and provides scientific support for the protection of fish habitats in the source river of the Yangtze River.

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 relates to the field of river water ecological restoration, in particular to a structure simulating a natural fishway and a fish habitat, which comprises a riverbed and a block stone string, and the block stone string is formed by connecting a plurality of block stones in series in sequence through a connecting rope; a plurality of fixing piles are sequentially arranged on the two sides of the riverbed at intervals in the water flow direction; a plurality of block stone strings are directly laid on the riverbed, and the two ends of the block stone strings are bound on the fixing piles; or a plurality of block stone strings are arranged in a staggered manner to form a net-shaped structure body, and then the net-shaped structure body is laid on the riverbed, and the parts, close to the shoreside, of the two sides of the net-shaped structure body are bound on the fixing piles. The structure can avoid the problem of loss of block stones under the scouring influence of water flow, and has the characteristics of easiness in transportation, simplicity in construction, low price, high stability and low operation and maintenance cost.

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 invention discloses a comprehensive protection system for a fish habitat, and relates to the technical field of fish protection, a comprehensive protection assembly is mounted at the bottom end of a top plate, a habitat net is welded to the other side of the bottom end of the top plate, a connecting frame is clamped in a positioning ring, feeding end pipes uniformly penetrate through the bottom end of a feeding long pipe, and the bottom end of a first water pump is connected with a feeding water tank; according to the device, impact force is weakened, so that the device is prevented from being damaged, water flow at the inhabiting net is smaller, sediment is convenient to settle, meanwhile, attachment of algae and the like is convenient, food is provided for fishes, the turbidity of water is reduced, and the conditions of the fishes are convenient to observe; the fish habitat monitoring device is convenient for fishes to stay for a long time, extracts water, samples and detects the conditions of the fish habitat, and records and processes the conditions in time to ensure that the fishes have a better living environment and better protect the fish habitat.

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.