37 results about "Intertidal zone" patented technology

The invention provides a spartina alterniflora invasion risk grade evaluation method, medium and system, and belongs to the technical field of spartina alterniflora invasion risk evaluation.Intertidal zone environment monitoring equipment is established to obtain multi-dimensional environment data in a tide period, and a tide inundation influence matrix and a tide emerging growth matrix are constructed; a matrix multivariate decomposition technology is combined with a minimum spanning tree algorithm to extract key environment factors and growth factors, a multi-layer neural network is utilized to construct a risk assessment model integrated with a gating weight adjustment mechanism, network parameters are dynamically adjusted through a tidal change influence coefficient, accurate quantitative assessment of the spartina alterniflora invasion risk is realized, and the risk assessment accuracy is improved. A risk early warning mechanism of differential monitoring frequencies is established, continuous improvement of a risk assessment model is realized based on iterative optimization of monitoring frequency adjustment coefficients, and the technical problem of insufficient accuracy of spartina alterniflora intrusion risk assessment in a tidal environment is solved.

The invention belongs to the technical field of intertidal zone ecological restoration, and relates to a scirpus mariqueter corm seedling cultivation method and a muddy coast ecological restoration method, and the method comprises the following steps: accelerating germination of scirpus mariqueter corms; carrying out seedling cultivation by adopting ground seedling cultivation, cup seedling cultivation or vegetation blanket cultivation, and outplanting after reaching outplanting standards to obtain scirpus mariqueter corm seedlings; wherein in the cultivation process, the salinity is controlled to be smaller than or equal to 20% o, and the outplanting standard is that the plant height is controlled to be 10-15 cm; for ground seedling cultivation and cup seedling cultivation, water culture or soil culture is adopted after germination accelerating, corm seedlings are obtained after corms germinate till buds grow to 5 cm or above, and then ground seedling cultivation or cup seedling cultivation is conducted on the corm seedlings; for planting blanket cultivation, the scirpus triqueter corm subjected to germination accelerating treatment is cultivated through a planting blanket, and the outplanting standard further includes that the plant density is larger than or equal to 300 plants / m < 2 >. The scirpus mariqueter corm seedlings can adapt to severe environmental conditions, the survival rate is increased, and the scirpus mariqueter corm seedlings are suitable for ecological restoration of muddy coast.

The invention provides a hydropower station personnel safety early warning method and system based on digital twinning, and relates to the technical field of data processing. The method comprises the following steps: constructing a digital twinborn model according to building information data and geographic space data of a hydropower station, and marking a space coordinate range of each monitoring area in the digital twinborn model; collecting monitoring video data of each monitoring area, and identifying an intertidal zone image and an image of a person entering the intertidal zone from the monitoring video data; determining a position coordinate corresponding to the personnel image, and determining a target monitoring area corresponding to the personnel image according to a space coordinate range to which the position coordinate belongs; mounting a preset video clip corresponding to the personnel image to a position corresponding to the target monitoring area in the digital twin model; and determining the relative position of the personnel in the mud flat area, generating corresponding early warning information, and pushing the early warning information. According to the technical scheme, spatial positioning and visual early warning of the personnel entering the hydropower station monitoring area can be realized.

The invention discloses an automatic tide tank system based on a siphon principle, which relates to the field of ecological simulation and comprises a main tank, a backpack, a low sewer pipe, a siphon device, a negative pressure ingress pipe, a high sewer pipe, a high sewer pipe ball valve and a low sewer pipe ball valve, the knapsack is fixedly connected to the rear portion of the main cylinder and communicated with the interior of the main cylinder, and the low sewer pipe and the high sewer pipe are both vertically placed in the knapsack. The siphon device further comprises a barrel-shaped cavity and a connecting hole, the connecting hole is formed in the bottom of the barrel-shaped cavity, and the barrel-shaped cavity is arranged at the inlet end of the high sewer pipe in a sleeving mode and used for forming a sealable air chamber at the inlet of the high sewer pipe. And the siphon device is fixed at the inlet end of the high sewer pipe through a connecting hole at the bottom. The applicability and customizability of the system are enhanced, and the whole system is simple in structure and high in stability, can efficiently simulate an intertidal zone of a natural sea area and create a tidal hydrological environment, and meanwhile has a good water purification function.

The invention discloses a construction method of a coastline protection structure, which comprises the following steps: excavating a foundation trench, laying a sandy soil and gravel alternate composite layer in layers, compacting, mounting a prefabricated reinforced concrete frame structure on the surface, connecting polygonal frame units by pre-embedding twisted steel, filling high-density polyethylene particles in through holes, covering steel wire meshes, and carrying out construction. And meanwhile, a drainage blind ditch with a drainage pipe wrapped by double-layer permeable geotextile is arranged on the back sea side, and the drainage pipe with the longitudinal gradient larger than or equal to 5% extends to the position below the low tide level line to form a multidirectional drainage path. The method is suitable for coastline protection with frequent tidal range, can effectively reduce the risk of emptying the base, inhibits the dispersion of the filler, adapts to the differential settlement of the foundation, and maintains the ecological function of the intertidal zone.

The invention provides a portable sampling box for an ocean intertidal zone. The portable sampling box comprises a box body and a driving mechanism, an upper shell is fixedly connected to the upper portion of the box body through a lock catch, and the outer surface of the box body is coated with a salt-mist-resistant and corrosion-resistant coating in a spraying mode. The driving mechanism comprises a mounting frame fixedly connected to the bottom of the box body, and a fixed seat is fixedly connected to the mounting frame; through linkage of the threaded rod, the driven part and the driving part, active regulation and control of the moving range are achieved, the threaded rod is rotated to drive the sliding block to slide along the sliding groove, the eccentric distance of the driven part relative to the rotating shaft is changed, the eccentric distance is reduced in a reef area, and the reciprocating range of the movable plate and the plate body is reduced so as to weaken jolt; the eccentric distance is increased in the sludge area, and the reciprocating amplitude is improved to assist the wheels in detrapping; the hard earth surface is adjusted to the middle position range, movement smoothness and stability are balanced, and stable dragging of the whole intertidal zone terrain is achieved through the cooperation of the four driving mechanisms arranged at the four corners of the box body and the buffering effect of the springs.

This disclosure aims to improve the accuracy of water level prediction in tidal zones to the same level as in non-tidal zones, using a water level prediction model. [Solution] In this disclosure, the training data extraction unit 4 extracts, as training data necessary for learning the water level at a water level prediction point in the tidal zone, tidal zone water level data EW, at least one of the upstream water level data UW and rainfall data RD, and pseudo-tidal level data that shows a pseudo-tidal level at the water level prediction point at that time, in the past before that time, and in the future before that time. The water level prediction model construction unit 5 constructs a water level prediction model M for predicting the water level at a water level prediction point in the tidal zone using the tidal zone water level data EW, at least one of the upstream water level data UW and rainfall data RD, and the pseudo-tidal level data.

The invention relates to a beach and shallow sea wind power site stratum measurement floating towing positioning system and a measurement method thereof, a seabed site stratum profile measurement device, a navigation positioning device and a power supply device are all carried on an investigation ship, and a floating body towing device is dragged to the stern of the investigation ship through a rope; the seabed site stratigraphic profile measuring device comprises a seismic source, the seismic source is arranged at the bottom end of the floating body dragging device, the navigation positioning device comprises an antenna, the antenna is arranged at the top end of the floating body dragging device, and the antenna and the seismic source are correspondingly arranged; the measurement process comprises the steps of working condition analysis, equipment installation, underway test, data quality test of a submarine site stratigraphic profile measurement device, measurement line layout, underway measurement, data integrity check, site stratigraphic profile data processing and analysis, and drawing and report making. Compared with a traditional beach shallow sea site stratigraphic profile measuring and positioning method, measurement and high-precision positioning of the intertidal zone site stratigraphic profile can be effectively completed, and the measurement precision of the beach shallow sea seabed site stratigraphic profile is improved.

The invention relates to a method for extracting and separating coastal mud flat environment DNA and application of the method in microbial diversity monitoring, and belongs to the technical field of environment monitoring and biodiversity. The method specifically comprises the steps that a coastal mud flat sediment sample and a coastal mud flat interstitial water sample are collected; extracting coastal intertidal zone sediment and coastal intertidal zone interstitial water environment DNA (deoxyribonucleic acid); carrying out PCR (Polymerase Chain Reaction) amplification and high-throughput sequencing on the extracted environment DNA to obtain a coastal mud flat microbial community structure result; and comprehensively calculating a biodiversity index according to a coastal mud flat microbial community structure result detection result to obtain coastal mud flat microbial diversity data. According to the method, the extraction efficiency of the environmental DNA is remarkably improved, the coastal mud flat microorganism investigation steps are optimized, the completeness of coastal mud flat microorganism investigation is improved, and a coastal mud flat microorganism diversity investigation result is more accurate.

The utility model discloses an intertidal zone bottom observation station frame body, and belongs to the field of marine environment monitoring. Comprising a main rod; the surface of the main rod is sleeved with a fixing assembly, one side of the fixing assembly is connected with a butt joint rod in an inserted mode, one side of the butt joint rod is sleeved with a butt joint plate, one side of the fixing assembly is connected with a connecting rod in an inserted mode, some fixing boxes are connected to the fixing assembly in an inserted mode, and the surface of each fixing box is provided with an anti-corrosion coating. The intertidal zone bottom-supported observation station frame body further comprises a supporting assembly, the supporting assembly comprises a supporting base, a supporting rotating shaft, a supporting rod, a butt joint rotating shaft and a supporting plate, the supporting rotating shaft is rotationally connected into the supporting base, the supporting rod is rotationally connected to the surface of the supporting rotating shaft, the butt joint rotating shaft is rotationally connected into the supporting rod, and the butt joint rotating shaft is rotationally connected into the supporting plate. The surface of the butt joint rotating shaft is rotationally connected with a supporting plate. The intertidal zone bottom-supported observation station frame body has the beneficial effects that the intertidal zone bottom-supported observation station frame body which is multiple in fixation, capable of preventing corrosion and convenient in position adjustment is provided.

The invention provides a floatable mangrove plant support which comprises at least one standard unit, each standard unit comprises a first bamboo raft, a second bamboo raft, a connecting assembly and a bearing assembly, and the first bamboo raft is provided with a plurality of first penetrating holes at intervals; the second bamboo rafts are connected with the first bamboo rafts through fixing bamboo tubes and provided with a plurality of second penetrating holes corresponding to the first penetrating holes at intervals. The connecting assembly comprises a plurality of connecting rod pieces arranged at intervals, each connecting rod piece comprises a tension spring pipe, a tension spring and a transmission pull rod, the tension spring pipes are hinged to the second bamboo rafts, the transmission pull rods are connected with the tension spring pipes through the tension springs, and limiting stop levers are arranged on the transmission pull rods; the bearing assembly comprises a plurality of bearing rod pieces arranged at intervals, the two opposite ends of each bearing rod piece slidably penetrate through the corresponding first penetrating hole and the corresponding second penetrating hole respectively, the bearing rod pieces can be stressed to rotate, a plurality of clamping grooves are formed in the bearing rod pieces in the length direction at intervals, and the clamping grooves can be clamped with the limiting stop rods. The problem that mangrove plants are difficult to transplant in an intertidal zone can be solved.

The utility model belongs to sampling device technical field especially relates to an intertidal zone sampling device, include: mounting bracket, mounting bracket end part installs elastic arc piece, and mounting bracket and elastic arc piece are fixedly connected with the net bag together, be used for the biological body is supported, the mounting bracket upper end fixed support plate, and support plate upper end detachably installs output pipe no. 2, one end of output pipe no. 2 is connected with the power source for flushing biological body, the other end of output pipe no. 2 is connected output pipe no. 1 through pressure control valve, output pipe no. 1 end part detachably installs connector, the connector outside detachably installs multiple universal conveying pipes, and multiple universal conveying pipes detachably install shower nozzle on, are used for flushing biological body. The utility model has more efficient than hammer chisel, the small rock damage, and can collect the small individual in the fragment, and compared with hammer chisel, the position more difficult to force and touch is more convenient.

This invention discloses an integrated tidal flat photovoltaic power station support foundation structure and its construction method, comprising a root pile foundation and a support structure. The main beam of the support structure is installed on top of a pair of columns and reinforced by diagonal bracing. A gap is left between the pair of columns, and the sleeve and collar are installed in the gap, with the sleeve on top and the collar on the bottom. The sleeve sidewall has multiple insertion holes arranged sequentially from top to bottom. The root pile foundation includes, from top to bottom, a pile top, a bamboo-shaped main pile, and a cross plate at the pile bottom. A tubular auxiliary pile is installed outside the bamboo-shaped main pile. The sleeve and collar of the support structure are respectively installed on the pile top and the bamboo-shaped main pile. The pile top has a corresponding waist-shaped hole, which is fixed to the sleeve by pins. This invention is simple to construct, requires less labor, and has strong structural durability. It is suitable for coastal intertidal tidal flat areas with poor foundation bearing capacity, strong environmental corrosivity, large tidal fluctuations, and significant extreme wind loads.

The invention discloses an automatic harvesting and seedling sowing machine for mud flat shellfish, which comprises a vehicle body, a harvesting machine head mounted at the front part of the vehicle body, a vertical lifting mechanism mounted in the middle of the vehicle body, a seedling sowing device mounted at the rear part of the vehicle body, the vertical lifting mechanism comprises an air cylinder mounted on a chassis of the vehicle body, and the output end of the air cylinder is connected with a shear fork type lifting frame; a lifting platform is connected to the top of the shear fork type lifting frame, and a folding plate is hinged to the side edge of the lifting platform. The harvesting, transferring and seedling sowing functions are integrated, coordinated design is carried out, the soil breaking shovel has the functions of harvesting, soil turning, soil breaking and seedling sowing, mechanization of the whole flow of mudflat shellfish culture is achieved, and the operation efficiency is greatly improved; by arranging the vertical lifting mechanism and the foldable lifting platform, automatic unloading of collected shellfishes is achieved, potential safety hazards caused by manual carrying of heavy objects are avoided, and operation safety is improved.

The application provides a method and system for determining a brackish water interaction zone of an estuary wetland, the method comprising: obtaining water depth data and salinity data of a plurality of sampling points in a region to be studied; constructing a salinity-water depth relationship model according to the water depth data and the salinity data of the plurality of sampling points; obtaining distances of a reference point from each of the sampling points along a tidal current direction and salinity data of the plurality of sampling points, and constructing a salinity-tidal current distance relationship model; obtaining tidal data, and determining a boundary of a brackish water interaction zone of the wetland in the region to be studied by using the salinity-water depth relationship model and the salinity-tidal current distance relationship model; and determining a range of the brackish water interaction zone of the estuary wetland in the region to be studied according to the boundary of the brackish water interaction zone of the wetland. The salinity-water depth relationship model and the salinity-tidal current distance relationship model are constructed, so that a dynamic boundary of the brackish water interaction zone of the estuary wetland can be determined, and the determination accuracy of the range of the brackish water interaction zone of the estuary wetland is improved.

A method for predicting a mineral composition of an evaporite penetrated by a first portion of a wellbore following a planned wellbore path through a sedimentary basin and determining an observed mineral composition of the evaporite. A non-transitory computer readable medium storing instructions executable by a computer processor including receiving a history of sea-level for a sedimentary basin, using a seawater evaporation model to predict a salinity threshold and produce a seawater evaporation curve, where the seawater evaporation curve includes an amount of minerals contained in a body of seawater as a function of salinity, identifying depositional portions of the history of sea-level, and developing a mathematical model to generate the geological-time dependent salinity curve based on the depositional portions of the history of sea-level.

The present application belongs to the offshore new energy technology field, and relates to a multifunctional engineering support structure for a tidal flat area and a mounting method thereof. The multifunctional engineering support structure comprises a plurality of foundation pedestals, each of which is connected with a truss structure; the end of the truss structure is connected with an end plate; a plurality of main load-bearing steel pipes are mounted between two adjacent end plates, and a plurality of anti-torsion support parts and box structures are arranged on the outer side of the main load-bearing steel pipes; the box structure comprises a U-shaped load-bearing part and an upper end closing plate, and the anti-torsion support part is arranged inside the box structure; a photovoltaic panel is arranged on the top surface of the upper end closing plate; the U-shaped load-bearing part and the upper end closing plate are connected with a wave power generation device; a plurality of reversing parts are further arranged on the outer side of the plurality of main load-bearing steel pipes; two reversing parts are taken as a group to make the main load-bearing steel pipe turn. The problems that the existing fishlight complementary mode is difficult to adapt to the continuous irregular changes of the tidal flat boundary line and the wave power generation and fishlight complementary system are difficult to match are solved.

The present invention provides a combined artificial ecological reef suitable for the intertidal zone and nearshore shallow sea and a construction method thereof. Intertidal reef bodies, subtidal reef bodies and oyster reef-type sand-blocking dikes are respectively arranged in sequence in the intertidal zone, subtidal zone and water surface. Multiple intertidal reef bodies are staggered in the intertidal zone. Multiple concrete pipes are provided in the subtidal zone. The subtidal reef bodies are laid on the concrete pipes, and the concrete pipes pass through the surface of the subtidal reef bodies. Multiple oyster reef-type sand-blocking dikes are suspended at the water surface through multiple pontoons. Multiple oyster reef-type sand-blocking dikes are staggered. The interiors of the intertidal reef bodies, subtidal reef bodies and oyster reef-type sand-blocking dikes are all filled with a mixed matrix. The limitation of the sand-blocking dike that it is difficult for organisms to attach is solved, and its structural stability and ecological benefits are improved. On the premise of solving the above problems, environmentally friendly materials that can meet the design functions are selected to avoid pollution input to the marine habitat.

The application discloses a cultivation and harvesting method of a string algae and application of the string algae in brackish water desalination, and belongs to the technical field of water treatment. Nodosilinea The string algae (Sp.) MH-2 is derived from the intertidal zone of the South China Sea, and has a preservation number of CCTCC NO: M 2026092. The string algae MH-2 is put into brackish water for cultivation, so that the salinity of the brackish water can be effectively reduced. The string algae grows rapidly and has strong salinity and temperature adaptability, and the biological membrane form of the string algae can well solve the industrial bottleneck of difficult microalgae harvesting, and has unique advantages in the field of water treatment. The method has the advantages of simple operation, low cost and environmental friendliness, can efficiently and stably reduce the salinity of brackish water with different salinity, and can easily realize algae-water separation after treatment. The harvested string algae also has high-value utilization potential, and provides a brand-new green solution for resource utilization of brackish water.

The application provides a novel water photovoltaic power generation device and relates to the technical field of photovoltaic power generation.The device comprises a pile foundation column, a bidirectional flow guiding mechanism is fixedly arranged at the lower part of the pile foundation column, a bidirectional buffer mechanism is fixedly arranged at the top end of the pile foundation column, the bidirectional buffer mechanism comprises a pile foundation top seat, an inner groove is formed in the pile foundation top seat, a bolt is fixedly arranged in the inner groove, a buffer rubber sleeve is arranged on the bolt, and a photovoltaic support vertical rod is arranged on the buffer rubber sleeve.In the application, the bidirectional flow guiding mechanism comprising a flow guiding silt blocking skirt and a reversing flow guiding wing is arranged at the lower part of the pile foundation column, so that the intertidal zone bidirectional tidal current working condition can be accurately adapted.The curved surface structure of the flow guiding silt blocking skirt can effectively disperse the flow vortex around the root of the pile foundation, the reversing flow guiding wing can automatically and adaptively reverse with the water flow direction, the direct erosion of the water flow to the plastic soft silt around the pile can be continuously blocked, the silt can be guided to naturally settle and deposit on the pile root, and uneven settlement, skew and deviation of the pile foundation can be avoided from the root.

The invention relates to the technical field of intelligent ocean equipment, in particular to a buried shellfish detection-harvesting-oxygenation integrated system based on cooperation of multiple unmanned ships. Comprising a detection mother ship module and a son ship system module. The sub-ship system module comprises 3-5 sub-ships; a parametric array sonar unit, a trawl unit, a cooperation unit and the like are organically combined by integrating a detection mother ship module and a son ship system module, the problems that a traditional unmanned ship is single in function and equipment is separated are solved, the integration of detection, harvesting and oxygenation functions is achieved, and the development efficiency of intertidal shellfish resources is improved; the tensioning subunits can automatically adjust the inclination angle of the trawl net based on three-dimensional topographic data, the water flow direction is optimized by combining flow guide fins of the trawl net units, the hanging height of the trawl net is flexibly adjusted through a multi-node hanging connecting mechanism, the problem that an existing trawl net device is insufficient in adaptability to shallow water topography is effectively solved, and stable operation under the complex intertidal zone topography is ensured.

This invention discloses an automatically raising and lowering intertidal upper-layer aquatic organism collection device and survey method, comprising: a pile, a connecting cable, a guide rod, a collar, a limiting component, a float, a net frame, a collection net, a net tail support ring, and a sample collection container; the pile is a hollow tubular structure vertically inserted into the bottom of the mudflat; the guide rod is vertically set and its bottom end is fixed to the bottom of the mudflat; the connecting cable connects the pile and the guide rod; the collar is fitted onto the guide rod and can slide up and down along the guide rod; the float is fixedly connected to the collar; the net frame is fixedly connected to the float; the collection net is a conical net; the net tail support ring is set inside the net tail of the collection net; and the sample collection container is connected to the net tail of the collection net. This invention utilizes the buoyancy of the float to automatically raise and lower with the tidal water level, and the net opening always remains horizontal and facing the direction of the water flow, efficiently and passively collecting upper-layer aquatic organisms drifting with the water flow without human intervention, allowing for long-term continuous monitoring, and has the advantages of simple structure, convenient installation, and high sample purity.

This invention relates to a method and system for constructing an explicit unstructured two-dimensional hydrodynamic model. The method includes constructing an unstructured mesh and identifying wet and dry states based on critical water depths, adapting to complex boundaries; discretizing the governing equations using the finite volume method based on conserved two-dimensional shallow water equations, and simultaneously solving the pressure and velocity terms through an explicit pressure-velocity coupling mechanism to achieve flow field prediction and correction and water depth updates; and combining optimization techniques such as adaptive time stepping and vectorization acceleration to perform time-iterative calculations and output visualized results. Its advantages include: effectively suppressing numerical oscillations under explicit in-situ meshes without requiring implicit or iterative algorithms, thus improving simulation accuracy and stability; improving computational efficiency through algorithm optimization, supporting large-scale mesh simulations; and adapting to complex boundaries such as estuaries and coastlines, providing a scientific basis for integrated estuarine and coastal management and intertidal ecological protection and restoration.

The application discloses cultivation of a double-capsule algae, an active component extraction method and application of an extract thereof in cosmetics, and belongs to the field of marine microalgae cosmetics. Geminocystis The double-capsule algae (D. sp.) MH1 is derived from a tidal zone of the South China Sea, and has a preservation number of CCTCC NO: M 2026091. Experiments prove that water extract, alcohol extract and ester extract of the double-capsule algae have significant antioxidant, whitening, anti-inflammatory and sunscreen effects, and are suitable for preparation of cosmetics with antioxidant, whitening, sunscreen and anti-inflammatory four-in-one effects. The algal strain has high cultivation efficiency, the extraction process is simple, active components are rich, a new way is provided for development of natural, four-in-one cosmetic raw materials, and has a wide application prospect.

The invention discloses a method for controlling the invasion of Spartina alterniflora, which relates to the fields of ecological restoration and biotechnology. The method comprises the following steps: S1: both a Spartina alterniflora area and a non-Spartina alterniflora area are located in an intertidal zone, an isolation zone is provided between the Spartina alterniflora area and the non-Spartina alterniflora area, and when the tide is high, the tide can cover the isolation zone; S2: a plurality of rows of ultrasonic devices are provided in the isolation zone from the Spartina alterniflora area toward the non-Spartina alterniflora area, parts of the rows of ultrasonic devices located in water emit ultrasonic waves to interfere with Spartina alterniflora seeds or sprouts in the water or on the water surface, thereby effectively preventing invasion caused by the sexual reproduction of Spartina alterniflora.

This invention provides a transplanting device and restoration method for intertidal Japanese eelgrass plants, belonging to the field of ecological restoration technology. The transplanting device is an open frame with biodegradable rope perforations on two opposite sides, with biodegradable ropes connected to these perforations. A downwardly sloping mud-blocking plate is also provided around the perimeter of the device. This transplanting device reduces damage to the intertidal topography. After transplanting Japanese eelgrass, it effectively resists the impact of tides on the transplanted plants, promoting the growth of new roots and solving the problem of difficulty in fixing transplanted plants. Successfully transplanted Japanese eelgrass plants can quickly form communities through their own reproductive capacity, optimizing the surrounding habitat, improving environmental quality, and exerting significant ecological value.

The invention discloses a mangrove forest building method under a difficult site condition, belongs to the technical field of coastal zone ecological restoration, and solves the problem of low planting survival rate of mangrove seedlings in a high-salt, barren and strong-tidal-scour mud flat environment. According to the technical scheme, mature coconut shells are selected and longitudinally split to form planting containers, and drain holes are formed in the bottoms of the planting containers; the container is filled with matrixes in a layered mode, a thick oyster shell broken layer is laid on the bottom layer, a mangrove forest intertidal zone sludge layer is filled in the middle layer, and a fine sea sand layer with the thickness of 1-3 cm covers the surface layer; the three coconut shell containers are arranged in an equilateral triangle shape, the adjacent coconut shells form a planting unit through hard connecting pieces, the planting units are arranged in a mud flat or wetland area, and the interval between every two units is 0.5-1.5 m; a mangrove seedling with the height of 30-50 cm is planted in each container, the root neck portion is kept to be 2-4 cm higher than the surface of the matrix, and backfilling and compacting are conducted. The method is used for efficiently building the mangrove forest on the mud flat or the wetland, the anti-scouring capacity and the survival rate of the seedlings are improved, and ecological system restoration is promoted.

The application relates to the technical field of biological sampling, and discloses an intertidal zone biological sampling method and device, which comprises a power plate, a top frame fixedly installed on the top of the power plate, a main handle fixedly installed on the rear side of the top frame, a moving block slidingly installed in the middle of the power plate, a piston cylinder fixedly installed above and below the moving block in the power plate, a connecting rod fixedly installed on the top of the moving block and the top of the piston cylinder, and a piston in the piston cylinder fixedly connected with the connecting rod. The micro air pump is controlled to draw air from below and exhaust air from above by pressing the operation button, so that the pistons in the upper and lower piston cylinders respectively push and pull the moving block to move downwards. At this time, the moving block drives the push-pull rod to move downwards, and then the hinge rod pushes the surrounding clamping frames to expand outward. Then, the expanded clamping frames are sleeved on the periphery of the sampling biological body, and then the micro air pump is started to draw air from above and exhaust air from below, so that the clamping frames are closed to each other, so as to control the biological body in the four clamping frames, thereby completing sampling.

The application discloses a kind of ground surface large-scale hydrodynamics simulation simulation methods based on shallow water equation group, belong to the technical field of fluid mechanics, steps include: introducing bed bottom source term, shallow water lattice Boltzmann equation is constructed;Combining single relaxation model constructs dry-wet boundary processing equation;The model to be simulated is constructed, and the calculation domain is set according to the constructed model;Simulation parameters of the model to be simulated are set;The boundary condition of the model to be simulated is set;According to the shallow water lattice Boltzmann equation and dry-wet boundary processing equation constructed, the dynamic phenomenon of the model to be simulated is simulated.The application uses the above method, on the premise of guaranteeing mass-momentum conservation, significantly improves the calculation stability of dam-break wave front, intertidal zone submergence and other dynamic boundary scenarios, and shortens the time consumption of calculation.

The invention relates to the field of marine ecological restoration, and provides a spartina alterniflora ecological control and mangrove forest restoration method. The method comprises the following steps: firstly, reasonably partitioning a treatment area and determining a landing point, before the spartina alterniflora germinates and seeds are mature, cradling by using a special cradling ship, controlling the stubble height, then cleaning, ploughing to damage root systems, leveling a field, and covering by using PLA composite weeding cloth with photosensitive and temperature-sensitive characteristics. Then, dynamically optimizing the nursery stock planting density according to the soil salinity and the tide frequency, forming holes in the weeding cloth for planting, and performing layered planting according to the elevation difference of the intertidal zone to form an isolation forest belt; and finally, evaluating the ecological restoration effect by adopting a multispectral remote sensing technology in combination with unmanned aerial vehicle aerial photography. According to the method, the spartina alterniflora is efficiently removed and treated, the new germination rate is remarkably reduced, environment friendliness is achieved, the cost effectiveness is high, mangrove forest ecological restoration is powerfully promoted, the amphibious biodiversity is improved, and an effective scheme is provided for coastal wetland ecological restoration.