90 results about "Intertidal area" patented technology

The invention provides a salt-tolerant plant constructed wetland system for treating eutrophicated mariculture wastewater, which specifically comprises a lower filler formed by mineral materials, and a middle filler formed by modified zeolite, sodium alginate coated vermiculite, rice husk charcoal, oyster shell, coral sand and diatomite, the surface filler is composed of intertidal zone bottom mud, intertidal zone raw water, coastal saline-alkali soil and composite algae powder, and the three fillers are combined with salt-tolerant plant breeding, bow-shaped water flow optimization and layered collaborative design; the core problems of poor salt tolerance, low adsorption efficiency, easiness in blockage, high maintenance cost and the like of the traditional constructed wetland during treatment of the mariculture wastewater are systematically solved.

The invention discloses an ecological shoreline diagnosis method and system based on hydrological-biological communication, and is applied to the technical field of water environment ecological restoration and shoreline health assessment. Comprising the following steps: dividing intertidal zones of a shoreline research area, and generating uniformly distributed sampling points in each tidal zone; extracting a plurality of indexes related to hydrological and biological connectivity, and constructing a comprehensive hydrological-biological connectivity state index through principal component analysis; dam feature data of a shoreline area are obtained, correlation analysis and collinearity screening are carried out, and key shoreline features are screened through a random forest algorithm; constructing a mechanism connectivity index based on a circuit theory; constructing and training a Bayesian network prediction model; and performing connectivity state diagnosis, attribution analysis and restoration scheme effect simulation on the target shore section by using a Bayesian network prediction model. By coupling hydrological and biological connectivity, static element evaluation is changed into dynamic ecological process diagnosis, and dominant factors are accurately positioned.

The invention relates to the technical field of intertidal zone surveying and mapping equipment, in particular to a telescopic surveying rod for intertidal zone surveying and mapping, which comprises an unmanned aerial vehicle, an accessory box is arranged at the lower part of the unmanned aerial vehicle, a satellite positioning assembly, an inertial navigation assembly, an encoder and a single-beam sounding assembly are arranged in the accessory box, and a telescopic rod is arranged below the accessory box. A surveying and mapping ball is connected to the bottom of the telescopic rod, and a balancing weight is arranged on the surveying and mapping ball; the unmanned aerial vehicle and the accessory box are detachably mounted, a mounting bracket is fixedly welded to the bottom of the telescopic rod, a filtering bin is fixedly welded to the bottom of the mounting bracket, a floating bin is arranged below the filtering bin, and a sampling bin is arranged below the floating bin. The unmanned aerial vehicle is matched with the telescopic rod to achieve the intertidal zone surveying and mapping function, and the technical problems that the surveying and mapping precision is affected by jolting running during surveying and mapping of a surveying and mapping vehicle, and the surveying and mapping capacity for an intertidal zone deepwater area is extremely limited are solved.

The invention discloses a device and a method for determining the denitrification rate of sediments in situ. According to the device, through field determination, transparent design and fluidity design, the accuracy and ecological correlation of denitrification rate determination are greatly improved, and an innovative technical support is provided for research and management of nitrogen circulation of a water body. And further determining the denitrification rates of rivers, shallow lakes and intertidal zones by using a method of combining stable isotopes with an in-situ culture room. The method can help understand back mechanisms of environmental problems such as algal blooms and oxygen deficit, improve water quality, provide important data support for ecological restoration, wetland protection and agricultural management, promote health and stability of an ecological system, provide important data for studying the effect of nitrogen circulation in global climate change, and promote implementation of sustainable management practice. Compared with a traditional laboratory measurement method, the method has remarkable advantages in the aspects of simulating natural conditions, spatial heterogeneity and ecological interaction, and the denitrification mechanism can be more comprehensively understood.

The invention provides an intertidal zone repairing method based on dredged soil microtopography remodeling. The intertidal zone repairing method comprises the following steps that (1) a submerged dike is built in an offshore intertidal zone; (2) the dredged soil is uniformly thrown and filled in an offshore beach, and the dredged soil is self-balanced and dispersed between the offshore beach and the submerged embankment under the action of ocean water power and tide; and (3) the inshore beach is filled with the restoration composition, and ecological protection and restoration of the ocean shoreline are completed through the water and sand combined action. The remediation composition comprises grass seeds and sandy soil. According to the method, self-balancing dispersion and water-sand comprehensive effects are integrated, the repairing effect of an intertidal zone can be remarkably improved, the stability of a beach face is improved, and the wave scouring condition is reduced.

The utility model discloses a land and water tide tank which comprises a main tank, a bottom tank and a partition plate, the partition plate divides the main tank into a land area and a water area, the land and water tide tank further comprises an overflow device and a water drainage area, and water in the water area overflows to the water drainage area through the overflow device; the first sewer pipe and the second sewer pipe are arranged in the sewer area, a water inlet of the first sewer pipe is higher than a water inlet of the second sewer pipe, the water inlet of the second sewer pipe is not higher than the overflow height of the overflow device, and an electric ball valve is arranged on the second sewer pipe; the water pump is arranged in the bottom cylinder. The water area of the land and water tide tank has a high water level when located at a low tide level, and meanwhile, the land area is provided with a deep land layer with good air permeability, so that the requirements of intertidal zone organisms on the land layer and the requirements of aquatic organisms on water quantity can be met. In addition, the deep land layer can be used for digging deep holes for cave organisms in the intertidal zone, survival of the cave organisms is facilitated, and the ornamental value of the land and water tidal tank is improved.

The invention relates to the technical field of flux modeling, in particular to an intertidal zone greenhouse gas flux modeling method fusing spatial variation and time series, which comprises the following steps: S1, acquiring spatial variation data of an intertidal zone target area, and outputting a spatial variation feature set; s2, acquiring time sequence data of an intertidal zone target area, and outputting a time sequence feature set; s3, calculating a spatial weight factor based on the spatial variation feature set, and outputting spatial weight distribution; s4, calculating a time dynamic factor based on the time sequence feature set, and outputting a time dynamic sequence; s5, constructing a greenhouse gas flux model, and outputting a flux estimation value; and S6, outputting a greenhouse gas flux distribution diagram of the target area of the intertidal zone according to the greenhouse gas flux model. According to the method, a coupling mechanism of a spatial variation factor weight field and a time dynamic factor sequence is introduced, the flux estimation model of space-time joint regulation is constructed, and the estimation precision of the model in different regions and different meteorological conditions is improved.

The invention relates to an explicit non-structural two-dimensional hydrodynamic model construction method and system, and the method comprises the steps: constructing a non-structural grid, recognizing a dry and wet state based on critical water depth, and carrying out the adaptation of a complex boundary; on the basis of a conservation type two-dimensional shallow water equation, a finite volume method is adopted to discretize a control equation, a pressure item and a speed item are synchronously solved through an explicit pressure-speed coupling mechanism, and flow field prediction correction and water depth updating are achieved; and in combination with optimization technologies of adaptive time step length, vectorization acceleration and the like, performing time iterative calculation and outputting a visual result. The method has the advantages that numerical oscillation is effectively suppressed under an explicit co-location grid, an implicit or iterative algorithm is not needed, and simulation precision and stability are improved; the calculation efficiency is improved through algorithm optimization, and large-scale grid simulation is supported; the method adapts to complex boundaries such as estuaries and coasts, and provides a scientific basis for comprehensive treatment of the estuaries and the coasts and ecological protection and restoration of intertidal zones.

The invention discloses a self-adaptive split type ocean boundary layer dynamic monitoring device, relates to the field of intertidal zone monitoring, and aims to solve the problem that existing equipment is difficult to meet long-term, three-dimensional and stable monitoring. The device comprises a main body and a buoy unit, the buoy unit is divided into three layers of platforms which are respectively provided with atmosphere monitoring equipment, water level wave monitoring equipment and water body monitoring equipment, and atmosphere-water body multi-element three-dimensional monitoring can be realized; the main body further comprises a hollow pipe, a micro floating body, a step foot, a sediment sampling pipe, a power generation floater and a supporting mechanism, the step foot assists the device in moving in a complex terrain, the sediment sampling pipe obtains a time sequence sample, the power generation floater utilizes tidal power generation to supply power, and the supporting mechanism adjusts adsorption force and bearing force through a triangular pyramid riveting structure, barbs and acoustic ranging to ensure that the device is stable. The device does not need to be frequently put and recycled, can stably monitor for a long period, and provides comprehensive data for intertidal zone environment research.

The invention discloses an intertidal zone identification method and related equipment, and belongs to the technical field of remote sensing identification, and the method comprises the steps: obtaining a remote sensing image of a target area; fitting different wavebands of the remote sensing image based on the pixels to obtain a time sequence fitting curve; based on the time sequence fitting curve, selecting a long time sequence training sample and a verification sample for training a random forest classification model; and performing classification identification on the remote sensing image by using the trained random forest classification model to obtain an intertidal zone identification result of the target area. According to the method, the long-time sequence samples are extracted on the basis of taking the pixels as units, the intertidal zone range is extracted by fully applying the information between the long-time sequence images, and the efficiency, precision and flexibility of extracting the intertidal zone information of the long-time sequence images are effectively improved.

The present invention provides a method and system for monitoring mangroves in high-resolution remote sensing images. Among them, the method includes: performing image acquisition and processing covering the study area to obtain a fused image; calculating the normalized difference water index and the normalized difference vegetation index based on the fused image to obtain a first calculation result; obtaining a key feature layer according to the first calculation result, resampling the fused image to obtain a first resampled image; dividing and screening sub-regions according to the first resampled image, calculating an automatic threshold according to the division result, and extracting the whole-region water body; obtaining a threshold for vegetation extraction based on the first resampled image, the normalized difference vegetation index, and the non-water body regions in the whole-region water body; extracting the intertidal zone according to the water body regions in the whole-region water body; performing masking processing on the fused image to obtain a first masking processing result; and obtaining a mangrove distribution map according to the first masking processing result and the threshold for vegetation extraction.

The invention discloses an ecological reef for preventing beach erosion and an application method thereof, and belongs to the technical field of ecological environmental protection. The ecological reef comprises a bottom protection ecological reef arranged in an intertidal zone or a subtidal zone and a beach protection ecological reef arranged in a subtidal zone; the bottom protection ecological reef comprises a bottom protection reef base, an ecological reef body and synaptic wave dissipation piles. The bottom protection reef base is hollow, the bottom face of the bottom protection reef base is provided with a communicating opening communicating with the outside, and the bottom of the ecological reef body is arranged on the bottom protection reef base and provided with a through cavity. The through cavity is right opposite to the communicating opening. The plurality of synaptic wave dissipation piles surround the top of the ecological reef body; the beach protection ecological reef comprises a first square reef, a second square reef and three-cluster communicated ecological columns; the first square reef and the second square reef are spliced together, are of hollow structures, and can be inserted into the top of at least one three-cluster communicated ecological column; the method not only can prevent silty silt beaches from being eroded, but also has ecological space restoration and protection functions.

The present application relates to the technical field of marine construction engineering, and particularly relates to a modular multi-stage intertidal zone ecological revetment concrete block and a laying method thereof. The ecological revetment concrete block is designed with holes with a diameter of 5 cm-10 cm on the surface, and the hole density is 10-50 per square meter, so that the surface area and the attachment points are increased. The surface concave-convex degree of the ecological revetment concrete block is controlled within a range of plus or minus 5 cm, so that the anti-skid performance is improved, the water flow turbulence is increased, and the oxygen exchange is promoted. By simulating the ecological gradient of the natural intertidal zone, a suitable growth and reproduction environment is provided for marine organisms, and the balance and service function of the marine ecological system are maintained.

The application discloses a kind of oyster reef repair methods based on plant material construction attachment matrix, it is related to the technical field of coastal zone ecological restoration.The repair method includes the following steps: S1, selecting plant material, the stem of salt marsh plant is the plant material;S2, the plant material is cut into segments and pretreated, and an attachment matrix assembly is prepared;S3, a plurality of the attachment matrix assemblies are tied and connected to form an attachment matrix unit, the attachment matrix unit is arranged in a matrix, is vertically fixed on the surface of a bearing member, and forms a deployable matrix structure unit;S4, the matrix structure unit is laid in the target repair area, and is fixed to the base by anchoring assembly.The plant material of the application maintains structural durability during the oyster attachment period, and is completely degraded naturally in the later period;It reduces the dependence on hard artificial matrix, has a wide source of materials, is easy to construct, has remarkable repair effect, and is suitable for oyster reef repair in intertidal zone or shallow water area and other areas where natural attachment matrix is lacking.

The invention discloses an earth surface large-scale hydrodynamic simulation method based on a shallow water equation set, and belongs to the technical field of hydromechanics, and the method comprises the steps: introducing a bed bottom source item, and constructing a shallow water lattice Boltzmann equation; constructing a dry-wet boundary treatment equation in combination with the single relaxation model; constructing a model to be simulated, and setting a computational domain according to the constructed model; setting simulation parameters of the to-be-simulated model; setting boundary conditions of the to-be-simulated model; and simulating the dynamic phenomenon of the to-be-simulated model according to the constructed shallow water lattice Boltzmann equation and dry-wet boundary treatment equation. By the adoption of the method, on the premise that mass-momentum conservation is guaranteed, the calculation stability of dynamic boundary scenes such as the dam break wave front edge and intertidal zone submerging is remarkably improved, and calculation time is shortened.

The invention discloses a composite microbial agent for degrading micro-plastics in seawater and a preparation method thereof, the microbial agent is composed of effective viable bacteria and auxiliary components, the effective viable bacteria are marine-derived halomonas, acinetobacter and bacillus and pseudomonas with high affinity with the micro-plastics, the effective viable bacteria are compounded according to a specific viable bacteria number ratio, and the microplastics are degraded by the auxiliary components. And function collaboration is realized. The auxiliary components comprise a protective agent consisting of trehalose, skimmed milk, glycerol and cane sugar, and a nutritional agent consisting of glucose and yeast extract. The preparation method comprises the following steps: respectively fermenting, centrifugally concentrating, compounding in proportion, mixing with auxiliary components, and finally drying to prepare powder. The invention further discloses application of the microbial inoculum to degradation of microplastics in beach intertidal zones and ship wastewater systems. The microbial agent is high in pertinence, good in stability in a high-salt seawater environment and high in degradation efficiency, and an effective solution is provided for in-situ bioremediation of marine micro-plastic pollution.

The application discloses a facies intertidal zone sessile organism investigation method based on visual modeling, first, the low tide period of spring tide day is determined in combination with the data of the tidal station, the orthographic image and three-dimensional model of the investigation area are acquired by using the RTK unmanned aerial vehicle, the accurate investigation range is demarcated and the entry and exit paths are planned through the geographic information system processing. The slope parameters are calculated by using the digital land surface model and the personnel equipment configuration is optimized, the ground control points are laid on the site, and the geodetic coordinate system reference is established. The double route oblique photography mode is adopted, the image shooting sampling is carried out at a 45-degree visual angle, a 0.4m object distance and a 70% image overlap rate, the high-precision three-dimensional ecological model is generated through the point cloud reconstruction in combination with the morphological identification result of the species, and the parameters such as the habitat density, interspecific competition and light adaptability of the sessile organism are efficiently investigated.

The utility model relates to a kind of dredging devices for assisting intertidal zone high beach machine site operation and maintenance, including work ship body, the front end of work ship body is fixedly connected with dredging connector, the end of dredging connector away from work ship body is fixedly connected with dredging mud pump head, the rear end of work ship body is fixedly connected with mud extension pipeline, the front end of mud extension pipeline is threadedly connected with front connecting ring, the inside wall of front connecting ring is fixedly connected with internal replaceable flexible sleeve, in the above-mentioned dredging device for assisting intertidal zone high beach machine site operation and maintenance, in ebb period, using professional work ship body and dredging mud pump head cooperation, clean out a temporary passage, ensure that its depth and width can satisfy construction ship traffic demand, simultaneously make internal replaceable flexible sleeve can cover operation area with dredging progress synchronously, avoid mud extension pipeline internal partial wear and tear problem, prolong mud extension pipeline service life.

The present invention discloses a tidal planting device, which relates to the technical field of planting devices. It includes a housing, a planting pot, a pressure regulation module, a power supply module and a control unit. A sealed water storage tank is arranged below the housing and is open at the top. The planting pot is sleeved inside the housing and is located above the water storage tank. The water storage tank is communicated with the bottom of the planting pot through a water pipe. The water storage tank is communicated with the outside atmosphere through the pressure regulation module. The pressure regulation module and the control unit are both electrically connected to the power supply module, and the pressure regulation module is electrically connected to the control unit. The present invention uses air pressure to press the water in the water storage tank into the planting pot, and can control the ebb and flow of the simulated tide through the control unit to realize functions such as automatic irrigation and water replenishment, water shortage prompt, etc. It is not only suitable for ordinary potted plants, but also more suitable for planting plants (mangrove plants) growing in the intertidal zone, and can also make the transplanting operation simple and the survival rate high.

The invention discloses an intertidal zone terrain profile extraction method based on time-average video images. The method comprises the following steps: acquiring an intertidal zone continuous video image, and correcting the intertidal zone continuous video image to a plane geographic coordinate system through a coordinate conversion model; establishing single-valued mapping between ground coordinates and image plane coordinates, and back-projecting pixels of the video image to a unified geographic grid; constructing an affine matrix of a single-pixel image column based on single-valued mapping, and embedding a geographic direction vector of a target section into spatial transformation of the image column; intercepting an image column sample of the image at each moment in the video image according to a preset pixel width along the target section direction; identifying the position of a waterline breakpoint in the image column by using a neural network model; and carrying out waterline elevation calculation and the like by referring to a local slope model based on a balanced section. According to the method, the high-frequency characteristics of video monitoring and the priori knowledge of the physical model are fused, so that the efficiency and precision of profile extraction are effectively improved while the data continuity is ensured.

The sampling device comprises the unmanned aerial vehicle and a remote control end, the lower portion of the unmanned aerial vehicle is fixedly connected with an electric push rod, and the telescopic end of the electric push rod is fixedly connected with a sampling mechanism; the electric push rod inserts the sampling mechanism into the sediment in the intertidal zone or pulls the sampling mechanism out of the sediment in the intertidal zone in a pressing manner, the layered structure of the sample is not disturbed, the obtained sample retains the layered morphology information of the sample, the unmanned aerial vehicle is used for sampling the sediment in the intertidal zone, personnel are prevented from entering the intertidal zone to sample the sediment, and the sampling efficiency is improved. And the safety of personnel is ensured.

The invention discloses an ecological environment monitoring and early warning method and system based on big data, and relates to the field of environment monitoring and early warning, and the method comprises the steps: collecting sea-land ecological monitoring data, and obtaining historical sea-land ecological data; completing index pair matching of all monitoring indexes, and dividing the target sea-land area into an intertidal zone area and a non-intertidal zone area based on an index pair matching result and sea-land ecological monitoring data; constructing an intertidal topological graph, and completing sub-region division of the intertidal zone region based on the intertidal topological graph to obtain a plurality of intertidal sub-regions; calculating ecological area parameters; and combining the sea-land ecological monitoring data and the ecological area parameters to generate an ecological environment early warning report of the target sea-land area. According to the invention, the precision of environment monitoring and early warning in the sea-land boundary area can be effectively improved.

The invention provides a multi-habitat water retention ecologicalization device and an eco-friendly ocean platform, and relates to the technical field of ecological restoration. The device comprises a permeable bearing frame which is provided with a shallow water retaining tank, a groove plate and a rock pool; the shallow water retention tank is used for providing a stable humid environment for aquatic organisms, and a flexible habitat matrix rope for providing a stable inhabiting surface for attached organisms is arranged in the shallow water retention tank; the groove plate is used for providing an appropriate attachment and inhabitation environment for intertidal zone organisms and keeping certain moisture in an intertidal zone; and the base of the rock pool has a roughened gradient for providing a heterogeneous living space for the intertidal zone organisms. The shallow water retention tank is additionally arranged on the permeable bearing frame, and the flexible habitat matrix ropes are additionally arranged in the water retention tank, so that the water retention time is prolonged, a wet and stable habitat environment is provided for attaching organisms, and rapid attachment and breeding of the attaching organisms are promoted. By additionally arranging the groove plate and the rock pool, an ideal attachment surface and a stable habitat environment can be effectively provided for intertidal zone organisms.

The invention discloses a lithofacies intertidal zone fixation organism investigation method based on visual modeling, which comprises the following steps of: firstly, determining a large tide daily low tide period by combining tide station data, acquiring an orthoimage and a three-dimensional model of an investigation area by utilizing an RTK unmanned aerial vehicle, delimiting an accurate investigation range through processing of a geographic information system, and planning an entrance path and an exit path; gradient parameters are calculated through a digital earth surface model, personnel and equipment configuration is optimized, ground control points are arranged on site, and a geodetic coordinate system reference is established; according to the method, a double-route oblique photography mode is adopted, image shooting and sampling are carried out at the view angle of 45 degrees, the object distance of 0.4 m and the image overlapping rate of 70%, a high-precision three-dimensional ecological model is generated through point cloud reconstruction in combination with species morphological identification results, and parameters such as inhabitation density, interspecific competition and light adaptability of fixed organisms are efficiently investigated.

The invention provides a beach shallow sea oil spill rapid numerical forecasting method, and belongs to the field of oil spill algorithms. According to the technical scheme, rapid numerical forecasting of oil spill of the beach and the shallow sea is finally achieved through rapid forecasting of ocean currents of an intertidal zone and calculation of the gravity expansion process after oil spill of the beach and the shallow sea, the adhesion process of the spill oil and the scouring and resuspension process of the spill oil. The method has the beneficial effects that the expansion of the spilled oil under the oil spilling condition of the beach shallow sea, the migration and diffusion process of the spilled oil in the water, and the conditions that the oil film is stranded and adsorbed in the intertidal zone again and is scoured into the water by the seawater can be quickly calculated by utilizing the type of the surrounding coastal zone; adsorption and scouring processes of spilled oil in the beach and shallow sea are quantified, a prediction and early warning tool can be provided for coastal zone oil spilling accident emergency, an optimal strategy is provided for coastal spilled oil removal, the pollution length and the pollution area of spilled oil on a shoreline can be provided, and technical support is provided for evaluating the influence of spilled oil on the ecological environment.

The invention discloses an oyster ecological reef cluster specially designed for a soft substrate intertidal zone mud flat and based on timber pile fixation, and belongs to the technical field of marine ecological restoration and coast engineering. The invention provides a suspension type reef construction scheme based on the friction pile principle aiming at the problem that an existing gravity type artificial reef is prone to sedimentation on a silty and muddy beach. The ecological reef cluster is composed of a plurality of reef body units, each unit comprises a pine pile set, and net bags are hung and fixed through rope knots. Trace terpenoids released by the pine material and biological membranes on the surfaces of the scallop shells have a synergistic effect, so that the attachment rate of the oyster larvae is remarkably increased. According to the method, through a'biological armor 'mechanism, the wood piles are wrapped and protected from being corroded by ship maggots through rapid calcification of oysters, a hydrodynamic field is optimized through 50-meter large-interval staggered layout, water body exchange and bait supply are guaranteed while wave energy is reduced, and the problem that structural stability and biocompatibility are difficult to consider in ecological restoration of the soft foundation beach is solved.

The present invention discloses a seamless integrated measurement method for intertidal zone topography based on acousto-optic remote sensing and rollers, which mainly includes the following steps: (1) Research the structure of the photon counting lidar scanning system, and construct a calculation model for the coordinates of the lidar underwater sounding points in the WGS84 space rectangular coordinate system; (2) Considering the attitude change of the hovercraft, on the basis of the ray tracing model, construct a calculation model for the coordinates of the single-beam sonar sounding points in the WGS84 space rectangular coordinate system; (3) Establish the geometric relationship between the measurement support placement box at the tail of the hovercraft and the mechanical roller, and construct a calculation model for the coordinates of the lowest sounding point of the mechanical roller in the WGS84 space rectangular coordinate system; (4) For different types of approximately homologous sounding point clouds in the overlapping area, propose corresponding fusion processing methods to obtain a high-precision and high-density underwater topography measurement data set for the intertidal zone. Through the above steps, efficient measurement of the underwater topography of the intertidal zone can be achieved.

The utility model discloses an intertidal zone surface sediment sampler which comprises a supporting plate, a vertical pipe is fixedly connected to the top of the supporting plate, scale marks are arranged at the bottom of the front side of the vertical pipe, a handle rod is fixedly connected to the top end of the vertical pipe, and a rotary supporting assembly is fixedly connected to the bottom of the supporting plate. The two sides of the rotary supporting assembly are fixedly connected with triangular shovel boxes with the bottoms of conical structures, and the two triangular shovel boxes are symmetrically arranged. According to the utility model, a series of structures are arranged, so that the two triangular shovel boxes can be conveniently inserted into intertidal zone surface sediments in an electric driving extrusion closing manner, and then stable shovel holding sampling is carried out, the collected surface sediments can be stably limited and prevented from leaking, and the sampling stability is improved; the sampling depth is conveniently limited, the limiting position is flexibly and accurately adjusted according to surface sampling requirements of different depths, personnel can conveniently and accurately control the sampling depth of surface sediments, and the sampling accuracy is improved.

The present application relates to the technical field of ecological system, and specifically discloses a system for constructing a three-dimensional monitoring network and evaluating ecological influence of coastal birds under the influence of a water-crossing bridge, comprising a three-dimensional monitoring network module, a data processing module and an ecological influence evaluation module; the three-dimensional monitoring network module is used for monitoring bird activities in a coastal nearshore area; the data processing module is used for calculating bird density and identifying bird spatial density mutation points based on data collected by the three-dimensional monitoring network module; and the ecological influence evaluation module is used for evaluating the ecological influence of the water-crossing bridge on birds based on bird density changes and mutation point migration. The shore-based, ship-based and bridge-based multi-dimensional monitoring nodes are cooperatively arranged, the shore-based fixed points cover the nearshore intertidal zone and land area, the ship-based mobile scanning supplements the far beach and channel blind area, and the bridge-based attachment points focus on the key areas around the bridge, thereby forming a three-dimensional network combining points, lines and surfaces, and solving the monitoring missing problem in the construction sensitive area and far shore area.

The present invention discloses an anti-corrosion coating, its preparation method and application. The preparation method of the anti-corrosion coating comprises: pre-treating a substrate with a pre-treatment liquid, applying a first primer liquid containing an adhesive, a cyanide oligomer and / or a cyanide monomer to the surface of the substrate to form a first primer layer; applying a second primer liquid containing an epoxy resin, a cyanide oligomer and / or a cyanide monomer to the surface of the first primer layer to form a second primer layer; then applying a functional coating thereon to form a functional coating; applying a transition coating liquid containing a coupling agent to the surface of the functional coating to form a transition layer; applying a fluorocarbon topcoat to the surface of the transition layer to form a topcoat to prepare an anti-corrosion coating. The anti-corrosion coating prepared by the present invention has good bonding strength, cathodic disbonding resistance and salt spray resistance, and is suitable for the protection of substrates in the intertidal zone of the transition zone between the ocean and the land.