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171 results about "Tidal flat" patented technology
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Mudflat sediment deposits are focused into the intertidal zone which is composed of a barren zone and marshes. Within these areas are various ratios of sand and mud that make up the sedimentary layers.
Vegetation-submerged dike coupled tough coast protection method and system and storage medium
The invention discloses a vegetation-submerged embankment coupled tough coast protection method and system and a storage medium, and the method comprises the steps: firstly, determining a research region, and systematically collecting the near-shore terrain, water and sand power conditions, vegetation parameters and other data; secondly, constructing a water-sand-vegetation coupling numerical simulation model based on the collected data, and performing precision verification on the model; then selecting a suitable vegetation type in combination with environmental characteristics of the research area, carrying out artificial seeding and planting work in a vegetation potential habitat of the tidal flat, and determining a design elevation and an offshore distance of the submerged dike; and finally, evaluating the coast protection effect under the synergistic effect of the submerged embankment and the vegetation, and quantitatively analyzing the improvement degree of the coast protection effect on wave attenuation and beach stability. A sustainable tough coast protection system can be formed under the climate change background through a collaborative protection mechanism integrating natural vegetation and an artificial submerged embankment. The method has the advantages of low cost, remarkable wave reduction effect and the like, and the capability of coping with climate change challenges and comprehensive protection of coastal zones can be effectively improved.
Owner:HOHAI UNIV
Tidal flat evolution prediction method and system based on hybrid model
ActiveCN120805782ADesign optimisation/simulationGeographical information databasesTerrainComputation complexity
The invention provides a tidal flat evolution prediction method and system based on a hybrid model, and relates to the field of dynamic geomorphology and artificial intelligence cross technology, and the method comprises the steps: constructing a tidal flat erosion and deposition evolution database under different scenes of a target coastal zone; constructing a landform prediction model through an artificial intelligence algorithm based on the database, and taking hydrodynamic characteristic data as input and seabed erosion and deposition variation as output; hybrid simulation is executed based on the physical mechanism model and the landform prediction model, and long-duration evolution prediction is realized by updating terrain boundary conditions through loop iteration; and the configuration service application module is used for receiving user input parameters through the interactive interface and outputting a visual result. According to the method, traditional hydrodynamic force-sediment-landform coupling calculation is decoupled into a physical mechanism and AI coordinated chain process, the calculation complexity is remarkably reduced, offline rapid calculation business of tidal flat evolution is achieved, and real-time technical support is provided for coastal zone planning and disaster prevention decision making.
Owner:SECOND INST OF OCEANOGRAPHY MNR
Automatic tidal flat extraction method fused with irregular hexagonal grid
The invention discloses a tidal flat automatic extraction method fused with an irregular hexagonal grid. The method comprises the following steps: step 1, constructing a time sequence remote sensing data set; step 2, establishing a precision verification sample library; step 3, screening spectral indexes; 4, synthesizing an extreme tide level image; 5, generating an irregular hexagonal grid; step 6, carrying out adaptive threshold segmentation; step 7, secondary elimination of confused ground features; step 8, tidal flat range extraction and precision verification; according to the method, based on a time sequence remote sensing image set, pixels at all positions are screened through a specific spectral index maximum value, a new extreme tide level image is formed through combination, spatial heterogeneity of a complex coastal zone is adapted through an irregular hexagonal grid and a bottom-to-top hierarchical merging strategy, local self-adaptive threshold segmentation is achieved in cooperation with a local Otsu algorithm, and a new extreme tide level image is obtained. The optimal grid scale is automatically determined by means of an elbow method, and the confused ground features are secondarily eliminated through the time sequence standard deviation, so that the problem of miscarriage of the confused ground features is effectively solved, and high-precision full-automatic extraction of the tidal flat is realized.
Owner:SHIJIAZHUANG UNIVERSITY
Coastal mud flat elevation measurement method based on orthographic reconstruction technology
The invention discloses a coastal tidal flat elevation measurement method based on an orthographic reconstruction technology, and the method comprises the following steps: laying image control points in a target monitoring area of a muddy tidal flat, and then measuring the elevation information of each image control point; an unmanned aerial vehicle is adopted to collect aerial photos of the area according to the planned flight route; an RTK base station is erected in the area to collect static POS data; obtaining static POS data and airborne POS data to calculate flight POS data; flight POS data and aerial photos are obtained, modeling is carried out in combination with elevation information of an image control point, and point cloud data and an orthoimage of the area are generated; and identifying a ponding area from the orthoimage, removing the ponding area from the point cloud data, and establishing a digital elevation model of the area to obtain tidal flat elevation information of the area. Therefore, the problem that large-range tidal flat elevation measurement cannot be carried out due to the limitation of the tidal falling time of the muddy tidal flat in the traditional artificial beach running is solved.
Owner:JIANGSU PROVINCIAL TIDE RES CENT (JIANGSU PROVINCIAL MARINE ENVIRONMENT MONITORING & FORECASTING CENT)
Tidal flat vegetation pattern information extraction method based on unmanned aerial vehicle photogrammetry
The invention discloses a tidal flat vegetation pattern information extraction method based on unmanned aerial vehicle photogrammetry. The method roughly comprises the following steps of (1) task planning, (2) data acquisition, (3) data preprocessing, (4) feature extraction, (5) classification and identification, (6) pattern analysis and (7) precision verification. According to the method, a multi-spectrum and RGB fused unmanned aerial vehicle image acquisition scheme is adopted, the acquisition opportunity is optimized in combination with tide forecast data, accurate extraction of multi-level information such as tidal flat vegetation types, coverage and biomass can be achieved through integration of deep learning and a traditional remote sensing classification method, and the method is high in pertinence, easy to operate and suitable for popularization.
Owner:YELLOW RIVER INST OF HYDRAULIC RES YELLOW RIVER CONSERVANCY COMMISSION
Integrated removal and treatment method for spartina alterniflora in mudflat wetland
The invention discloses an integrated removal and treatment method for spartina alterniflora in a mudflat wetland. The integrated removal and treatment method sequentially comprises the steps that a construction operation area is divided; mowing the spartina alterniflora for more than three times in the construction operation area, and airing the crushed straws; performing anaerobic landfill on the straws into the first landfill ditch; carrying out more than two times of root system ploughing on the construction operation area which is already cut; a second landfill ditch with the depth not smaller than two meters is dug, and the ploughed spartina alterniflora root system is placed into the second landfill ditch; and covering soil and compacting the second landfill ditch. According to the method, the formation of mature seeds of the spartina alterniflora can be effectively prevented, the sexual propagation path of the spartina alterniflora can be effectively cut off, the surface of the first landfill ditch after landfill is no longer suitable for growth of the spartina alterniflora, mowing and ploughing are carried out in different areas at the same time, the spartina alterniflora is prevented from sprouting again, the treatment efficiency of the wetland spartina alterniflora is further improved, and the economic benefit is increased. Vegetative propagation of spartina alterniflora is avoided, repeated treatment of spartina alterniflora is avoided, and the treatment cost of spartina alterniflora is reduced.
Owner:SHANGHAI GARDENS (GROUP) CO
Method for effectively removing spartina alterniflora
According to the method for effectively removing the spartina alterniflora, deep digging and layered inverted burying are conducted on the spartina alterniflora in a treatment area, it is ensured that overground parts and shallow surface plants are all integrally inverted and buried in soil which is 140 cm or below away from the ground, the plants are isolated from light and air, and the effect of removing the spartina alterniflora is achieved. Then the underground part is integrally inversely buried above the inversely buried overground part, the overground part is thoroughly covered, deep isolation is ensured, the regeneration capacity of the overground part is fundamentally blocked, and thorough deep digging and layered inversely buried burying of the spartina alterniflora in the whole treatment area are sequentially and progressively completed. The method does not need to use chemical agents, is environmentally friendly, easy and convenient to operate, high in durability and suitable for ecological management of large-area beach wetlands, effectively restrains rejuvenation of spartina alterniflora and maintains ecological balance.
Owner:RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
Method for recovering suaeda salsa vegetation based on tidal creek optimization
The embodiment of the invention discloses a method for recovering suaeda salsa vegetation based on tidal creek optimization. The method comprises the steps that satellite remote sensing images at a plurality of historical collection moments are acquired, and the satellite remote sensing images are used for representing the distribution condition of a tidal creek system of a coastal wetland and suaeda salsa vegetation; according to the satellite remote sensing image, determining a network connectivity index of a tidal creek system and a landscape pattern index of suaeda salsa vegetation; according to the network connectivity index of the tidal creek system and the landscape pattern index of the suaeda salsa vegetation, key factors of the tidal creek for promoting growth of the suaeda salsa vegetation and corresponding optimal thresholds are determined; and optimizing the tidal creek system of the target wetland according to the key factors and the corresponding optimal threshold values so as to recover suaeda salsa vegetation of the target wetland. By means of the method, the tidal flat hydrological environment can be accurately and effectively adjusted and optimized, restoration of suaeda salsa vegetation is achieved, and the degradation risk of the suaeda salsa vegetation is effectively prevented and controlled.
Owner:NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S +1
Tidal wetland space-time evolution monitoring method based on Landsat
The invention discloses a tidal wetland space-time evolution monitoring method based on Landsat, and the method comprises the following steps: S1, obtaining multi-temporal Landsat remote sensing image data of a target region, and carrying out the consistency preprocessing; s2, on the basis of the preprocessed multi-temporal Landsat remote sensing image data, constructing a spectral index time sequence including NDWI, NDVI, PSRI and NIRv; s3, generating a key period image based on the spectral index time sequence; s4, performing initial classification of tidal flat and wetland vegetation based on the image in the key period to obtain an initial classification map year by year; s5, based on the spectral index time sequence, performing segmentation by using a LandTrendr algorithm, and performing time sequence consistency optimization on the initial classification graph according to an obtained segmentation result to obtain an optimized classification result; and S6, performing post-processing on the optimization classification result to generate a tidal wetland year-by-year dynamic classification data set. According to the method, the high-quality data set capable of accurately reflecting year-by-year dynamic evolution of the tidal wetland can be generated.
Owner:SUN YAT SEN UNIV
Safety recovery support fixture
The present invention relates to a safety recovery support fixture with a new structure that can easily be fixed to be buried in the ground, tidal flats, the ocean, or the like and can easily be recovered as necessary. The safety recovery support fixture according to the present invention can be fixed to a ground surface (1) by spreading anchor blades (22) in a state in which a fixer (20) is inserted into the ground surface (1) and can be removed by being pulled upward in the state in which the anchor blades (22) are narrowed. Accordingly, the safety recovery support fixture can be firmly fixed to the ground surface (1) to support a structure and can be easily recovered after the structure is demolished, and there is an advantage that environmental destruction can be prevented.
Owner:AORES CO LTD +2
Mud flat spraying system
The invention provides a mud flat spraying system, which belongs to the technical field of spraying systems and comprises a water storage tank, a desalination container, a desalination channel, a water pumping pipe and a water pump. The desalination container has a desalination chamber. One end of the desalination channel is communicated with the water storage tank, and the other end is communicated with the top of the desalination cavity. The first end of the water pumping pipe is fixedly connected with the water storage tank and communicates with the bottom in the water storage tank. The water suction pump is arranged on the water suction pipe. According to the mud flat spraying system provided by the invention, seawater is injected into the desalination cavity nearby, steam formed during evaporation of the seawater enters the water storage tank through the desalination channel and is condensed to form fresh water to be stored in the water storage tank, and the water suction pump can pump water in the water storage tank through the water suction pipe to irrigate plants such as suaeda heteroptera. Therefore, the amount of fresh water conveyed to an engineering site is reduced, and the problem that a large amount of fresh water needs to be conveyed to the engineering site in coastal mud flat ecological restoration engineering is avoided.
Owner:DONGYING MARINE PROTECTION & DEVELOPMENT INSTITUTE
Tidal flat large-scale remote sensing intelligent extraction method
The invention discloses a tidal flat large-scale remote sensing intelligent extraction method. The method comprises the following steps: extracting sample points; extracting shoreline data; determining a tidal flat extraction range based on shoreline data; constructing a remote sensing feature data set, calculating different features based on remote sensing data and synthesizing the different features into a new data set; construction of a classification decision tree: determining a proper segmentation threshold value by using distribution frequency distribution of sample points in the remote sensing feature data set, and constructing the decision tree; synthesizing the lowest tide level data, namely synthesizing the lowest tide level data by using the first 5% and 5-25% of images according to the proportion that each pixel in the three-year remote sensing data is identified as a tidal flat; and extracting a tidal flat space range, applying a classification decision tree on the synthesized lowest tide level data to obtain a product, and carrying out data post-processing and statistical mapping. Through remote sensing big data, large-scale minimum tide level data extraction and synthesis and tidal flat drawing are realized, and the robustness and the application range of the method are improved while the limitation of the existing method is overcome.
Owner:EAST CHINA NORMAL UNIV
System and method for managing geological survey data of near-coastal zone
The invention discloses a near-coastal zone geological survey data management system and method, and relates to the technical field of coastline monitoring, and the method comprises the following steps: collecting a remote sensing image of a near-coastal zone, and carrying out the preprocessing of the remote sensing image, and obtaining a first coastal remote sensing image; extracting a remote sensing image of the land and water contact area based on the first coastline remote sensing image to obtain a second coastline remote sensing image, and performing first coastline extraction processing to obtain first coastline information; performing second coastline extraction processing based on the second coastline remote sensing image to obtain second coastline information; performing coastline correction processing based on the first coastline information and the second coastline information to obtain real-time coastline information; the method is used for solving the problem that when a water body and land in an image are distinguished based on a remote sensing image and a spectral index in an existing coastline monitoring technology, seawater and a tidal flat cannot be accurately distinguished in the tide rising and falling process, and the coastline cannot be accurately identified.
Owner:CHINA AERO GEOPHYSICAL SURVEY & REMOTE SENSING CENT FOR LAND & RESOURCES
Distributed settlement intelligent sensing and data acquisition system for mudflat photovoltaic pile foundation
The invention discloses a mudflat photovoltaic pile foundation distributed settlement intelligent sensing and data acquisition system, and belongs to the technical field of intelligent sensing systems.The system comprises a datum plane setting module which is used for setting a main datum plane and a plurality of sub datum planes according to spatial distribution of a mudflat photovoltaic pile foundation; the region division module is used for dividing the plurality of beach photovoltaic pile foundations into a plurality of sub-regions in a set space range, and calculating the average main reference surface elevation of each sub-region; the processing module is used for identifying whether the mud flat photovoltaic pile foundation is settled or not according to the single mud flat photovoltaic pile foundation in each sub-region; the analysis and comparison module is used for comparing a difference value with a preset deformation threshold value after the settlement of the tidal flat photovoltaic pile foundation is identified; and the intelligent acquisition and positioning module automatically triggers a preset data acquisition process when the difference value exceeds a preset deformation threshold value. According to the method, the sub datum planes are arranged in the height direction of the pile body, so that the comprehensiveness and spatial resolution of deformation monitoring are improved.
Owner:ZHEJIANG DATANG INTERNATIONAL RENEWABLE POWER CO LTD
Mudflat vegetation beach fixing and wave dissipating effect simulation system based on multi-scale numerical values
ActiveCN120611570ADesign optimisation/simulationSpecial data processing applicationsTerrainTidal flat
The invention relates to the technical field of computer-aided engineering, in particular to a multi-scale numerical value-based beach vegetation beach fixing and wave dissipating effect simulation system, which comprises the following steps of: acquiring terrain basic data, boundary condition data, vegetation physical parameters and vegetation ecological parameters; establishing a numerical calculation grid and a terrain by using terrain basic data, and updating a landform elevation and a hydrodynamic condition based on a wave flow sediment coupling mechanism by using boundary condition data as a driving condition; according to a vegetation mechanical model, vegetation flexible deformation is calculated in combination with hydrodynamic conditions and vegetation physical parameters, and hydraulic drag force parameters are updated based on the vegetation flexible deformation; according to the habitat suitability model, evaluating the probabilistic trend of vegetation growth, death and expansion; physical process simulation and landform evolution calculation are combined, and adaptive verification and resetting steps are introduced, so that accelerated simulation of beach fixation and wave dissipation of beach vegetation is realized. According to the invention, through multi-scale simulation, accurate prediction of beach fixing and wave dissipation is realized.
Owner:ZHEJIANG GUANGCHUAN ENG CONSULTING CO LTD +1
Water conservancy construction mud flat supporting device
Owner:山东天成水利建设有限公司
Spacing-adjustable shovel tooth combined type mud flat shellfish digging device
ActiveCN224125022UMaintain the ability to break groundImprove cutting effectClimate change adaptationPisciculture and aquariaTidal flatSoil science
The utility model discloses a shovel tooth combined type mud flat shellfish digging device with adjustable spacing, which relates to the technical field of mud flat shellfish digging operation, and comprises a cross beam and a plurality of digging shovels fixedly arranged on the cross beam, comb teeth are uniformly arranged among the digging shovels, the comb teeth are arranged on the cross beam, the spacing of the comb teeth is adjustable, and the shovel tooth combined type mud flat shellfish digging device is arranged on the cross beam. The digging shovel is provided with multiple types of protruding structures, and the comb teeth are designed to be of a gradually-changing-size structure. Due to the design of various protruding structures on the shovel body of the digging shovel, mud flat silt can be better cut during digging, soil entering resistance can be reduced, and soil adhesion is prevented. The comb teeth are of a size gradual change type structural design, the soil penetrating size is gradually changed during excavation, soil penetrating resistance can be reduced, and the hilling phenomenon is reduced. The digging shovel and the comb teeth are adopted for cooperative operation, the soil breaking capacity of the digging shovel can be kept, the soil penetrating resistance is reduced through the comb teeth, part of soil is screened out in the digging process, and the soil hilling phenomenon is reduced.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
Large-scale tidal flat range extraction and elevation inversion method and system based on gridding segmentation
The invention provides a large-scale tidal flat range extraction and elevation inversion method and system based on gridding segmentation. The method comprises the following steps: S1, screening and preprocessing remote sensing images in a research area to obtain a remote sensing image set; s2, carrying out water body extraction on the screened remote sensing images based on a K-means + + algorithm to obtain a binary image set; s3, summarizing and calculating binarization results to obtain a pixel-by-pixel submerging frequency result, and extracting a tidal flat range; s4, carrying out the inversion of the tidal flat elevation based on the tidal flat elevation inversion model and the grid segmentation to obtain the tidal level information; and S5, spatial filtering post-processing is carried out on the elevation inversion result, and distortion points are removed. Based on the idea of gridding segmentation, the problem that the precision is limited by the assumption that tidal flats with the same tide submerging frequency have the same elevation only in a limited space range during large-scale tidal flat elevation inversion can be solved, and the precision and the speed are both achieved during tidal flat elevation inversion.
Owner:FUZHOU UNIV
Tidal flat stable power generation control system
The invention discloses a mudflat stable power generation control system, and belongs to the technical field of power supply, the mudflat stable power generation control system is provided with a voltage stabilization structure and a sand blocking structure, the voltage stabilization structure comprises a transformer, a transformer input coil is connected with a mudflat photovoltaic power generation output end, and a transformer output coil is connected with a municipal power grid. The voltage of an output end is stabilized by controlling the number of working turns of an input coil of the transformer, so that the voltage is more balanced when the input coil is connected into a municipal power grid, and the balance of tidal flat photovoltaic power generation and power supply is improved, the sand blocking structure comprises a blocking groove, the blocking groove is obliquely arranged and fixedly connected between pile bodies, and a partition plate is fixedly connected between the groove walls of the two sides of the blocking groove; and the seawater of the tide enters the blocking groove and is sequentially blocked by the partition plates, and sand grains fall into the bottom of the blocking groove through the filter screen, so that the pile body is prevented from being scoured and accumulated by the seawater, and the stability of the pile body and the photovoltaic module is enhanced.
Owner:山东瑞智投新能源科技有限公司
An in-situ observation method and observation device for tidal flat sediment bedding
This invention discloses an in-situ observation method and device for tidal flat sedimentary bedding, belonging to the field of tidal flat geomorphological sedimentary observation technology. The observation method includes: laying settlement plates on the tidal flat surface at the in-situ observation location of tidal flat sedimentary bedding; and laying new settlement plates on the sediment of the previous settlement plate at intervals based on the ebb and flow of the tide. After reaching a preset number of settlement plates, collecting the sediment on each settlement plate during low tide and retrieving the settlement plates; and quantitatively analyzing the bedding data and bedding characteristic indicators of the sediment on each settlement plate. The observation device includes a support frame with a timing control unit. The timing control unit includes a holder and a controller. The holder holds multiple layers of settlement plates, and the holder releases the settlement plates one by one according to the interval and the number of releases. This method can obtain the morphological characteristics of tidal flat sedimentary bedding under tidal conditions, providing strong support for the study of the formation process and carbon sequestration mechanism of tidal flat sedimentary bedding.
Owner:HOHAI UNIV
Tidal flat evolution prediction method and system based on landform model
ActiveCN120930558ADesign optimisation/simulationComplex mathematical operationsBiofilm growthLandform
The invention relates to the technical field of landform prediction, in particular to a tidal flat evolution prediction method and system based on a landform model. Comprising the following steps: acquiring landform data, environmental parameter data and biological membrane characteristic data of a target tidal flat area; the landform data comprises water depth distribution and sediment porosity; the environmental parameter data comprises tidal flow velocity, fluid shear force, illumination intensity and water body temperature; the biological membrane characteristic data comprises biological membrane thickness obtained by in-situ sampling; constructing a dynamic viscosity coefficient model of the biological membrane based on the thickness of the biological membrane and the temperature of the water body; the dynamic viscosity coefficient model represents a nonlinear enhancement effect of the biological membrane on the viscosity of the sediment; establishing a biofilm growth rate feedback model based on the water depth distribution and the illumination intensity; the feedback model quantifies the coupling relationship between the biofilm growth of the sedimentation area and the microtopographic factor; according to the method, the problem of evolution prediction misalignment under the dynamic interaction of the environmental factors can be solved.
Owner:SECOND INST OF OCEANOGRAPHY MNR
Tidal flat hydrodynamic numerical modeling method and system based on nautical chart and underwater terrain inversion
PendingCN120145659ADesign optimisation/simulationSpecial data processing applicationsTerrainTidal flat
The invention provides a tidal flat hydrodynamic numerical modeling method and system based on a nautical chart and underwater terrain inversion, and relates to the field of coastal zone dynamic process modeling. The method aims at providing an efficient initial research means for tidal flat hydrodynamic process analysis and treatment. The method comprises the following steps: firstly, extracting sea chart topographic data as a model subtidal zone topography, and obtaining a model intertidal zone topography through water depth remote sensing inversion; then, two sets of topographic data are integrated, a sea chart topography is used in a subtidal zone, and a remote sensing inversion topography is used in an intertidal zone; secondly, only the sea chart topography is used, and intertidal zone topographic changes are ignored. Two sets of terrains are adopted to construct models respectively, and the finally selected model is determined through verification result comparison and error analysis. According to the method, the accuracy of tidal flat hydrodynamic simulation can be ensured, and meanwhile the economical efficiency and timeliness are improved.
Owner:NANJING HYDRAULIC RES INST +2
Coastal tidal flat large-range remote sensing automatic extraction method
The invention discloses a coastal tidal flat large-range remote sensing automatic extraction method, and belongs to the technical field of remote sensing tidal flat mapping, and the method comprises the steps: calculating a turbid water index pixel by pixel based on a cloud removal time sequence remote sensing image, selecting a comparison wave band according to the turbid water index, and calculating a self-adaptive mixed water index in combination with a green light wave band; for each image determined by the self-adaptive mixed water body index, calculating a value domain histogram of the image, and taking a self-adaptive mixed water body index value corresponding to a derivative mutation point in the value domain histogram as a self-adaptive land and water segmentation threshold value; calculating an improved normalized difference water body index scene by scene, extracting a maximum water surface range based on the improved normalized difference water body index and a self-adaptive water and land segmentation threshold value, extracting a tidal flat exposure frequency image based on each scene image and the self-adaptive water and land segmentation threshold value, and further extracting initial tidal flat spatial distribution; and generating a tidal flat spatial distribution visualization result after connectivity processing. According to the method, rapid, accurate and stable extraction of tidal flat space distribution in a large-range and complex environment can be realized.
Owner:HANGZHOU NORMAL UNIVERSITY
Mangrove plant planting device
The utility model relates to the technical field of mangrove planting, and discloses a mangrove plant planting device which comprises a baffle used for avoiding soil loss, a positioning seat used for locking the baffle and a connecting assembly used for adjusting the position of the positioning seat. The connecting assembly comprises a center base used for loading and supporting the contained structure, a driving gear rotationally arranged in the center base, a gear shaft rod fixedly installed on the driving gear, and a first rotating rod rotationally arranged on the gear shaft rod, wherein a connecting rod and a driven rack are arranged on the center base in a sliding mode. The end, away from the center base, of the connecting rod and the end, away from the center base, of the driven rack are fixedly connected with the positioning base. According to the mangrove plant planting device, the positioning seats are arranged to limit the positions of the baffles, the multiple baffles form a frame structure, the frame structure is inserted into the mud flat, protection is provided, soil around the saplings is prevented from being lost, the cultivation effect of the saplings is guaranteed, and then the survival rate of planting of the mangrove saplings is increased.
Owner:CCCC SDC (FUJIAN) COMM CONSTR ENG CO LTD
Seedling raising and transplanting method for mangrove plant Aegiceras corniculatum based on external application of gibberellin
The invention discloses a seedling raising and transplanting method for mangrove plant Aegiceras corniculatum based on external application of gibberellin, and belongs to the technical field of saline-alkali plant cultivation and mud flat ecological restoration. The method mainly comprises the four stages of seed disinfection and gibberellin soaking, germination cultivation, seedling cultivation, salinity domestication and mud flat transplanting. After being disinfected, the seeds are soaked in a gibberellin solution with the concentration being 300 mg / L, gibberellin with the same concentration is sprayed regularly during germination, and the germination rate and the germination speed are increased. In the seedling stage, humus soil and mud flat bottom mud mixed matrix is adopted for cultivation, and growth is promoted by spraying 100 mg / L gibberellin to leaf surfaces and injecting 25 mg / L gibberellin to rhizosphere. After seedlings are formed, the seedlings are subjected to step-by-step salinity domestication (5 per thousand to 30 per thousand), gibberellin spraying and rhizosphere injection are carried out at regular intervals, and the stress resistance of the seedlings is enhanced. The method can effectively shorten the seedling raising period of Aegiceras corniculatum, improve the seedling raising efficiency, enhance the adaptive capacity of seedlings to the tidal zone environment, and facilitate rapid recovery of a mangrove forest ecosystem.
Owner:FUZHOU UNIV
A beach ecological restoration groove dam optimization design method based on hydrodynamic simulation
This invention belongs to the field of coastal engineering and ecological restoration technology. It discloses a method for optimizing the design of beach ecological restoration trenches based on hydrodynamic simulation. The method includes: collecting beach hydrological datasets, topographic datasets, and ecological datasets, and preprocessing them. The hydrological dataset includes wave data, tidal current data, storm surge data, and sediment transport data. The topographic dataset includes shoreline slope, beach elevation, underwater topography data, and sediment source storage data. The ecological dataset includes tidal flat vegetation distribution, benthic organism density, ecologically sensitive area range, and water environment quality data. This invention, through the coupled processing of hydrological, topographic, and ecological multi-source datasets, obtains hydraulic reference values and topographic adaptation values for the trench, directly reflecting the regional dynamic conditions and the degree of topographic adaptation, significantly reducing the workload of manual calculation and trial and error.
Owner:秦皇岛华勘地质工程有限公司
A method for self-growth construction of a mangrove ecological island and an artificial island siltation device
This invention relates to a method for constructing a biodegradable mangrove ecological island based on dynamic tidal energy regulation, and an artificial island siltation device. The artificial island siltation device includes a bamboo gate system, a hemp rope net system, a fixed pile system, and a limiting system. A dynamic filtration structure is formed by the liftable bamboo gate and the hemp rope net. Utilizing the buoyancy difference and water flow velocity changes generated by tidal rise and fall, a synergistic effect is achieved: accelerating the passage of sediment-laden water during high tide and promoting siltation during low tide. A fully biodegradable material is used to construct a growing silt body. The buoyancy balance is regulated by the bamboo joint holes, ensuring the device remains suspended on the surface layer of the silt body. This allows for continuous siltation and elevation of the tidal flat, forming an artificial island that provides a site for mangrove seedling planting and meets the required daily sunrise duration for mangrove growth. The method and device of this invention have technical advantages such as low construction cost, dynamic adaptation to tidal changes, and avoidance of secondary pollution.
Owner:SHANGHAI GARDENS (GROUP) CO
A method and system for predicting tidal flat evolution based on a geomorphic model
ActiveCN120930558BDesign optimisation/simulationComplex mathematical operationsBiofilm growthLandform
The present application relates to the technical field of geomorphology prediction, in particular to a tidal flat evolution prediction method and system based on a geomorphology model. The method comprises the following steps: obtaining geomorphology data, environmental parameter data and biological membrane characteristic data of a target tidal flat area; the geomorphology data comprises water depth distribution and sediment porosity; the environmental parameter data comprises tidal current velocity, fluid shear force, light intensity and water temperature; the biological membrane characteristic data comprises biological membrane thickness obtained by in-situ sampling; a biological membrane dynamic viscosity coefficient model is constructed based on the biological membrane thickness and the water temperature; the dynamic viscosity coefficient model represents a nonlinear enhancement effect of the biological membrane on sediment viscosity; a biological membrane growth rate feedback model is established based on the water depth distribution and the light intensity; the feedback model quantifies the coupling relationship between biological membrane growth in a deposition area and microtopographic factors; the present application can solve the problem of inaccurate evolution prediction under dynamic interaction of environmental factors.
Owner:SECOND INST OF OCEANOGRAPHY MNR
Standardized mangrove forest ecological restoration system after typhoon disaster
The invention belongs to the technical field of ecological restoration, and particularly relates to a standardized mangrove forest ecological restoration system after a typhoon disaster. According to the method, the disaster degrees of the mangrove forest damaged by the typhoon are divided into severe disasters, moderate disasters and mild disasters on the basis of remote sensing images and field investigation; for severe disasters, lodging forest classification cleaning operation and landform restoration are implemented, big seedlings are selected for field planting in combination with tidal flat elevation, and reconstruction of a standardized mangrove forest ecological system is formed; in allusion to moderate disasters, pruning and complementary planting operation based on forest gaps are carried out, and the recovery efficiency of the primary forest stand is improved; for mild disasters, the forest stand canopy density is dynamically monitored by adopting an unmanned aerial vehicle, and corresponding grade intervention is adopted, so that accurate restoration is realized. According to the method, indigenous tree species are adapted based on the tidal flat environment and salinity, differential remediation operation is adopted, collaborative reconstruction of the mangrove forest ecological system structure and the coast protection function is achieved, and a standardized operation system breaks through limitation of traditional remediation.
Owner:HAINAN ACAD OF FORESTRY SCI (HAINAN ACAD OF MANGROVE RES)
A method and device for harvesting intertidal shellfish by soil vibration
This invention discloses a method and device for harvesting tidal flat shellfish using a vibration-induced burial method, belonging to the field of tidal flat shellfish harvesting technology. The harvesting method includes the following steps: arranging several cylindrical vibrators side-by-side and installing them on one side of a driving device; adjusting the center distance, vibration frequency, amplitude, burial depth, and moving speed of the driving device between the cylindrical vibrators; applying vibration to the tidal flat substrate using the cylindrical vibrators to induce localized liquefaction; and using the driving device to move the cylindrical vibrators, causing the buried shellfish to detach from the substrate and float to the surface for harvesting. In this invention, the cylindrical vibrators apply vibration to the tidal flat substrate to induce localized liquefaction, causing the shellfish buried in the substrate to separate from the substrate and float to the surface. This eliminates the need for overall excavation of the tidal flat substrate, and the cylindrical vibrators can move smoothly in the liquefied substrate, thereby reducing operational resistance and equipment load during the harvesting process.
Owner:DALIAN OCEAN UNIV