46 results about "Salt marsh" patented technology

The invention discloses a multi-vegetation salt marsh biological landform evolution prediction method and system. The method comprises the following steps: constructing a coupling model based on a water and sediment dynamic model and a vegetation dynamic model; performing water and sediment flow simulation by using the water and sediment dynamic model, obtaining a water and sediment flow simulation result after the simulation is finished, calculating characteristic values of stress factors, and interpolating the characteristic values of the three stress factors into a vegetation grid of the vegetation dynamic model from a water and sediment dynamic grid; performing vegetation distribution simulation by using a vegetation dynamic model, completing planting, succession, pressure death, annual death and expansion processes of vegetation on a vegetation grid, performing weighted averaging on a vegetation distribution simulation result from the vegetation grid to a water and sand dynamic grid after simulation is ended, and inputting the vegetation distribution simulation result to a water and sand dynamic model; long-term simulation of the biological landform of the salt marsh is achieved through a plurality of cycles. The simulation prediction method can solve the problems that an existing model can only consider a single vegetation species, tidal power is excessively simplified and the like, and the scientificity and accuracy of the simulation process are guaranteed.

The invention discloses a wave hydrodynamic numerical simulation method for a sea area provided with a hedge shrub dam, and relates to the technical field of offshore wave simulation, and the method comprises the following steps: S1, determining a target sea area, and collecting actually measured water depth topographic data and chart water depth data of the target sea area, the target sea area being a salt marsh beach sea area where the hedge shrub dam is planned to be arranged; s2, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area by using a structured grid; s3, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S4, based on the wave hydrodynamic two-dimensional model constructed in the S2, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic space-time distribution of the target sea area. According to the method, the calculation efficiency can be guaranteed, the wave transmission characteristics of the hedge shrub dam are considered, and the influence of construction of the hedge shrub dam on the wave hydrodynamic environment field can be accurately simulated.

The invention provides a soil improvement and saline-alkali water spray irrigation method suitable for a saline-alkali beach. The method comprises the following steps: reclamation and field building, dike building and tide blocking: building and enclosing a mud flat area needing reclamation and planting in the earlier stage to prevent further erosion of saline-alkali water; constructing water guide systems such as a reservoir and a drainage ditch; after the soil is slightly aired, turning over and loosening the soil in the beach area, doping desulfurized gypsum (calcium sulfate), charcoal and a high-molecular water-retaining material into the soil, and fully mixing and uniformly stirring to form a water-retaining layer and provide nutrition for vegetation; sowing the seeds in a planting area according to the density requirement; finally, spraying a layer of macromolecular binding material on the surface to prevent weathering and saline-alkaline water erosion and slow down migration of salt to the planting layer; during irrigation, red soil is poured into the reservoir, saline-alkali water is introduced for stirring and standing for a period of time, then mixed muddy water is used for irrigation, and sprinkling irrigation is adopted for irrigation so as to slow salt infiltration into the earth surface; when the rainfall period is up, rainwater can be used for watering and washing off salt crystals on the earth surface. According to the method, rich mud flat resources in China are fully developed and utilized, the saline-alkali water serves as an irrigation water source, the problems of complex water diversion, troublesome salt leaching, fresh water deficiency, too high cost and the like of a traditional method are solved, the land utilization benefit and the agricultural production level are greatly improved, and the influence of salt on plants is relieved; the restoration of the ecological environment and the improvement of the agricultural production level are promoted.

The invention relates to the field of coastal salt marsh wetland vegetation monitoring, and discloses a suaeda salsa adaptive hyperspectral index and identification method based on a hyperspectral remote sensing image. The method mainly aims at solving the problem of difficulty in identifying the suaeda salsa in the intertidal zone caused by serious phenomena of same object and different spectrum and same spectrum and foreign matter in the coastal wetland; the method comprises the following steps of: firstly, selecting representative samples and acquiring an average spectral reflectivity curve of the representative samples by considering different vegetation types, coverage difference and soil water-salt difference of the coastal wetland; then, analyzing the spectrum curve and selecting a hyperspectral image optimal wave band combination which is most suitable for distinguishing the suaeda salsa from other surface features; then, setting an adaptive rule and constructing a suaeda salsa adaptive hyperspectral index (SSAHI); and finally, quickly and accurately identifying and extracting the range of the suaeda salsa in the intertidal zone based on SSAHI. According to the method, the range of the suaeda salsa in the intertidal zone can be rapidly and accurately monitored based on the hyperspectral remote sensing images of different sensors and different time, and the problems that existing suaeda salsa identification based on the hyperspectral remote sensing images is difficult and low in precision are solved.

The invention relates to the field of ecological environment monitoring technology and ecological value evaluation accounting, in particular to a coastal salt marsh ecosystem climate regulation service material quantity accounting method, which comprises the following steps: S1, based on years of meteorological and ecological investigation monitoring data, extracting a response relationship of temperature and humidity to climate regulation positive utility, and calculating the climate regulation service material quantity of a coastal salt marsh ecosystem; constructing a response curve and dividing an enhancement region, an attenuation region and a reversal region; s2, screening forward contribution time periods according to utility partitions, identifying boundary fluctuation and mutation behaviors, and generating an adjustment utility validity period list; and S3, generating a contribution settlement table and converting the contribution settlement table into energy and matter quantity indexes according to the ecological type and the adjustment effectiveness in the block settlement validity period, and completing the adjustment service matter quantity accounting. According to the invention, through critical zone identification, validity period screening and multi-stage mapping conversion, high-precision, space-time sensitive and energy equivalent accounting of the climate regulation service material quality of the coastal salt marsh ecosystem is realized.

The invention provides an arid region salt marsh grassland wetland water supplement regulation and control method and a related device, and the method comprises the steps: determining the ecological water demand and deficiency corresponding to a target region according to the wetland vegetation evapotranspiration, precipitation and underground water-soil water exchange flux of the target region in a target time period, the target area is any area in the salt marsh grassland wetland in the arid area; determining a water quantity adaptive gap corresponding to the target area according to the earth surface water supplementing quantity and the ecological water demand deficit quantity of the target area in the target time period; and performing water supplementing regulation and control on the target area according to the water quantity adaptive gap. According to the accurate evaluation result of the water volume adaptation gap, a refined drip irrigation technology is adopted to carry out ecological water supplementation on the salt marsh grassland wetland, the requirements of plants for water in all stages of the whole life cycle are ensured, and the stability and adaptability of a wetland ecological system are improved; and multi-target collaborative development of hydrological communication, biodiversity improvement, habitat optimization and the like of the wetland ecosystem is realized.

The utility model discloses a coastal salt marsh land ecological restoration structure which comprises a saline-alkali soil layer, a drainage blind ditch is arranged on the saline-alkali soil layer, and a cobblestone layer is arranged in the drainage blind ditch. The saline-alkali soil layer is covered with the planting layer, the planting layer is arranged in a wave shape, a plurality of planting holes are formed in the planting layer, plants are planted in the planting holes, isolation layers are arranged between the plants and the planting holes, drainage channels are arranged below the planting holes, through holes are formed in the drainage channels, and the isolation layers and the drainage channels are communicated through the through holes; the blind pipe is arranged below the wave trough of the wavy planting layer, a first water pipe is arranged on the blind pipe, reverse filter geotechnical cloth is arranged between an opening of the first water pipe and the planting layer, and the blind pipe is connected with the drainage channel through a second water pipe. Compared with the prior art, the saline-alkali water can be prevented from backtracking, the survival rate of plant planting is improved, and ecological restoration of the coastal salt marsh desert land is facilitated.

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 provides a blue crab saline-alkali soil seedling desalination and domestication interactive training system, a salinity regulation and control model optimization method, equipment and a medium, a dynamic physiological response model is obtained by establishing a blue crab seedling salinity stress response model and performing parameter estimation and calibration based on actual breeding data; carrying out global sensitivity analysis according to the dynamic physiological response model, and determining a physiological tolerance interval of key regulatory factors related to the desalination and domestication salinity of the juvenile green crabs; carrying out numerical optimization calculation by taking the daily decreasing amplitude of salinity and the stage stable time as decision variables and the maximization of the survival rate of the fries as an optimization target to obtain an optimal combination; and determining an optimal target salinity set value of each desalination stage according to the physiological tolerance interval and an optimization result, and constructing a gradient desalination regulation and control strategy. By adopting the scheme of the application, the optimization of the salinity regulation model can be realized, and the stability and the efficiency of desalination and domestication of the young green crabs are improved.

The invention relates to a multi-factor-driven coastal salt marsh wetland blue carbon potential evaluation method, which comprises the following steps: acquiring coastal salt marsh wetland area data, and preprocessing; evaluating the dynamic change trend of the coastal salt marsh wetland by using a PLUS model; predicting the appropriate distribution probability of different salt marsh wetland vegetation by using a Maxent model, and obtaining the spatial distribution result of different salt marsh wetland vegetation in the future; evaluating the blue carbon potential of the coastal salt marsh wetland by using an InVEST model to obtain the blue carbon potential of each vegetation of the coastal salt marsh wetland; and carrying out weighted stacking on the blue carbon potential of different salt marsh wetland vegetation of the coastal salt marsh wetland. The method has the beneficial effects that efficient and accurate evaluation of the blue carbon potential of the coastal salt marsh wetland is realized through multi-model collaboration and data driving.

The invention discloses a coastal salt marsh wetland non-photosynthetic vegetation coverage inversion method, which comprises the following steps: S1, obtaining hyperspectral reflection curves of soil, non-photosynthetic vegetation and photosynthetic vegetation of the coastal salt marsh wetland of the Yellow River Delta, simulating and measuring spectral characteristics of samples under different moisture contents (dry, low humidity, medium humidity and saturation) in a laboratory, and calculating the coverage of the non-photosynthetic vegetation in the coastal salt marsh wetland; key wave bands of non-photosynthetic vegetation and other ground features are screened and distinguished; s2, constructing a moisture-insensitive hyperspectral NPV index (MINI), and determining an optimal wave band combination through wave band traversal; and S3, constructing mixed data of soil, non-photosynthetic vegetation and photosynthetic vegetation under different moisture conditions in a laboratory, and evaluating inversion precision and stability of MINI under different moisture conditions. S4, acquiring a coastal salt marsh wetland hyperspectral image, and calculating an NDVI value and an MINI index value based on the processed image; and S5, performing spectral unmixing on the mixed pixels based on a triangular space method, and inverting the non-photosynthetic vegetation, photosynthetic vegetation and soil coverage of the research area. The method provided by the invention solves the technical problems of low precision and poor stability of the traditional NPV index inversion coverage under the condition that the coastal salt marsh wetland is influenced by tides and the moisture change is obvious.

The utility model relates to the technical field of coastal zone ecological restoration, and discloses a coastal zone ecological restoration bank protection structure. The device comprises a coast main body and a sea, a salt marsh wetland is arranged between the coast main body and the sea, a plurality of ecological vegetation are planted on the surface of the salt marsh wetland, a viewing platform is arranged on one side of the salt marsh wetland, a main retaining wall is arranged on one side of the viewing platform, a protection slope is arranged on one side of the coast main body, and a plurality of grass fixing frames are arranged on the surface of the protection slope. A water collecting channel is formed in the viewing platform; a water pump chamber corresponding to the water collecting channel is formed in the coast main body; a water pump is mounted in the water pump chamber; a water conveying opening is formed in one side of the water pump; by means of the design, sea wave erosion is resisted, coastal buildings and roads are protected, and the ecological balance recovery speed of the coastal zone is increased.

The invention provides a PID-based servo drive control method and system, and relates to the technical field of servo drive control, and the method comprises the steps: obtaining robot capture operation videos of salt marsh wetland small arthropomorphic organisms under different mechanical claw clamping forces; based on the operation information under the clamping force of each mechanical claw, the lower-limit clamping force of the anti-disengaging mechanical claw and the upper-limit clamping force of the protective mechanical claw are determined; determining a plurality of first mechanical claw clamping forces based on the anti-falling lower limit mechanical claw clamping force, the nursing upper limit mechanical claw clamping force and the operation information under each mechanical claw clamping force; the robot based on the multiple first mechanical claw clamping force captures the operation video of the salt marsh wetland small joint limb type organisms to determine the target mechanical claw clamping force; and PID servo driving control is executed on the robot based on the target mechanical claw clamping force. According to the method, the optimal adaptive mechanical claw clamping force for capturing the salt marsh wetland small joint limb type organisms by the robot can be accurately determined.

The invention relates to the technical field of gardening cultivation, and discloses a seedling raising method suitable for planting asparagus in saline-alkali soil, which comprises the following steps: circularly executing saline water unsaturated infiltration natural evaporation concentration and fresh water saturated leaching on a seedling raising substrate; according to the method, stress characterization of seedlings in a sentinel hole tray with relatively small matrix filling depth is used as an objective basis for triggering drip washing, and the conductivity of drip washing drainage is measured so as to feed back and adjust the stress intensity of subsequent circulation. Physiological elasticity and adaptive memory of the seedlings are constructed, and the systematic problem that the survival rate is low due to the fact that the seedlings cultivated in a traditional seedling raising mode cannot quickly respond to environment fluctuation after being transplanted to real saline-alkali soil is solved.

The invention belongs to the field of coastal salt marsh carbon sink monitoring, and particularly relates to a coastal salt marsh deposition rate automatic measuring device and method based on a marker pile method. The automatic measurement device comprises a marker pile, a beach face elevation automatic measurement function module and a beach face elevation automatic measurement control module. A horizontal reference platform is arranged at the top end of the marker pile; the beach face elevation automatic measurement function module comprises an electric rotating holder, an electric linear guide rail and a laser ranging module which are installed on the upper portion of the horizontal reference platform, one end of the electric linear guide rail is fixedly connected with the electric rotating holder, and the laser ranging module is fixedly connected with a sliding block on the electric linear guide rail; and the beach face elevation automatic measurement control module is used for controlling the rotation of the electric rotating holder and the sliding of the sliding block, so as to control the laser ranging module to reach a target reference point and measure the beach face elevation.

The present application relates to the field of horticultural cultivation, and discloses a seedling raising method suitable for planting salt sedge in saline-alkali soil, which comprises the steps of performing salt water non-saturated infiltration, natural evaporation concentration and fresh water saturated leaching on the seedling raising substrate in circulation; the seedling stress representation in the sentry plug tray with a shallow filling depth is used as an objective basis for triggering leaching, and the conductivity of leaching drainage is measured to feedback and adjust the stress intensity of the subsequent cycle; by reproducing a rhythmic osmotic pressure dynamic change in the seedling root zone, the physiological flexibility and adaptability memory of the seedling are constructed, and the systematic problem of low survival rate of seedlings cultivated by traditional seedling raising methods after transplanting to real saline-alkali soil due to the inability to quickly respond to environmental fluctuations is solved.

The embodiments of the present invention provide a coastal wetland classification method, device, equipment, and storage medium, relating to the field of remote sensing image recognition technology. The coastal wetland classification method includes the following steps: S1. Obtaining a Landsat image set. S2. Combining high tide images, low tide images, summer images, and winter images based on the image set. S3. Obtaining a coarse classification range of mangroves based on the low tide images. S4. Obtaining a coarse classification range of salt marshes and a coarse classification range of tidal flats based on public data. S5. Extracting a valid remote sensing index set from the four images based on the coarse classification range of mangroves, the coarse classification range of salt marshes, and the coarse classification range of tidal flats. S6. Obtaining a set of remote sensing index thresholds for each wetland type in different images based on the valid remote sensing index set. S7. Obtaining a fine classification range of mangroves, a fine classification range of salt marshes, and a fine classification range of tidal flats based on the set of remote sensing index thresholds for each wetland type in different images, the high tide images, the low tide images, the summer images, and the winter images.

The invention relates to the technical field of ecological restoration, in particular to a tidal wetland salt marsh plant growth promoting device and a self-adaptive water level adjusting system.The tidal wetland salt marsh plant growth promoting device comprises a frame, a first partition plate and a second partition plate are arranged in the frame to form an independent planting groove of a latticed three-dimensional structure, and a micropore aeration oxygenation device is arranged in the planting groove; the frame is composed of an air pump and an aeration pipe, a water level adjusting system is further arranged in the frame and comprises a water level monitoring module, a control module and a water level adjusting executing mechanism, and an installation adjusting structure capable of controlling the frame to move in the state parallel to the water surface is further arranged at the bottom of the frame. The problems that in the prior art, the water level cannot be adjusted in a self-adaptive mode according to tidal changes, and the position and the height cannot be flexibly adjusted according to topographic fluctuations of different areas are effectively solved.

The invention belongs to the technical field of ecological restoration, and relates to an intertidal zone ecological restoration method based on salt marsh plant planting. Determining positions and distribution of single plaques, a plaque concentration area and an ecological function coverage area in the planting area; the plaque concentration area comprises N single plaques and light beaches, the distance between every two adjacent single plaques is 5-15 m, the area occupied by the single plaques is not smaller than 60%, and the area of the plaque concentration area is larger than or equal to 200 m < 2 >; the ecological function coverage area comprises M plaque concentration areas and light beaches, and the area occupied by the plaque concentration areas is not less than 50%; the ecological function coverage area accounts for more than 50% of the area of the intertidal zone restoration area; salt marsh plants are planted in the single plaques; the planting density per unit area in the single patch is not less than 80 plants / m < 2 >; after planting, the growth condition of the salt marsh plants is monitored so as to evaluate the actual survival rate and the growth condition. Ecological function coverage with the maximum area is achieved with the minimum plant planting area, and consumption of materials and manpower is effectively reduced.

The invention discloses a corrosion test method for a seabed cement-based material. The corrosion test method comprises the following steps: step 1, preparing artificial seabed sludge; 2, testing the water content and the shear strength of the artificial seabed sludge; 3, drawing a shear stress-shear rate curve of the artificial seabed sludge, and determining the yield stress and the plastic viscosity of the artificial seabed sludge; step 4, completely burying cement-based materials with different proportions into artificial seabed sludge, covering a sealing device, putting the artificial seabed sludge into a constant temperature and humidity chamber or an environmental test chamber, setting temperature and humidity parameters, and starting a soaking test; and 5, taking out the cement-based material according to a preset time interval, observing and testing to obtain an erosion rule of the cement-based material in an artificially prepared seabed sludge environment, and determining a construction mix proportion. The concentration of key erosion factors is accurately controlled by adjusting components according to needs, and erosion characteristics of specific marine environments such as mud flat, deep sea and salt marsh can be simulated.

The invention relates to the technical field of coastal wetland survey, in particular to a multi-purpose coastal salt marsh survey quantifying frame and a using method thereof.The multi-purpose coastal salt marsh survey quantifying frame comprises a set of quantifying frame assemblies and a set of quantifying frame supports, and the number of the quantifying frame assemblies is four, six or eight; the number of the quantitative frame supports is four, six or eight, the quantitative frame supports are used for supporting and fixing the quantitative frame assemblies, the quantitative frame assemblies are connected end to end to form a rectangular frame structure, one end of each quantitative frame assembly is an assembly head end, the other end of each quantitative frame assembly is an assembly tail plate, the middle of each quantitative frame assembly is an assembly handle part, and the assembly head ends are matched with the assembly tail plates in size. And the quantitative frame bracket is vertically connected with the component handle part to support and fix the quantitative frame component. According to the multipurpose coastal salt marsh investigation quantifying frame and the using method thereof, through the design capable of being opened and closed, the influence of the height of plants on use is eliminated, and the multipurpose coastal salt marsh investigation quantifying frame can be effectively used under the condition that the plants are tall.

The invention discloses a salt marsh ecological restoration system based on historical propagule library in-situ activation, and relates to the technical field of ecological restoration, the system comprises a historical habitat identification and calibration module used for identifying and calibrating the historical distribution range of target restoration vegetation in a target area; the deep propagule library verification module is used for carrying out sampling and activity verification on propagules in a sediment deep area and confirming existence of a propagule library capable of being used for in-situ activation; the ecological opportunity decision-making module is used for determining a suitable time window for implementing in-situ activation operation; and the targeted physical disturbance activation module is used for applying non-invasive physical disturbance to the deep area of the sediment, so that the living propagule buried in the deep area floats upwards to the surface layer of the sediment. According to the scheme, normal form transformation from dependence on external transplantation to activation of internal potential is achieved, the repair process is simplified into targeted field operation, and the comprehensive cost and resource consumption are remarkably reduced.

The present application belongs to the field of computer aided design and numerical simulation, and relates to a deposition dynamic feedback guided oyster reef induced salt marsh micro-landform construction method. The present application aims to solve the problems of dynamic deposition simulation and automatic layout optimization in coastal ecological restoration, and solve the problems that traditional static simulation cannot reflect dynamic deposition evolution and lacks automatic optimization mechanism. The present application firstly fuses multi-source water and sediment dynamic parameters to generate initial data, and constructs a dynamic deposition evolution model; then inputs initial oyster reef layout parameters to perform biophysical feedback simulation, and generates a sediment deposition atlas; finally analyzes the topographic elevation changes in the atlas, combines with salt marsh suitability indexes, and outputs an optimal layout scheme by using a heuristic search algorithm. The present application not only overcomes the limitations of traditional static simulation, but also improves the scientificity and calculation efficiency of ecological restoration engineering design, and has important application value.

The invention provides a method and device for determining total primary productivity, electronic equipment and a storage medium. According to the method, a target evaluation model is coupled based on a water potential difference model and a salinity stress model of a sample salt marsh wetland. The target evaluation model evaluates the total primary productivity of the target salt marsh wetland based on the environment driving data of the area where the target salt marsh wetland is located and the physiological data of the vegetation. Wherein the water potential difference model is obtained based on the soil salinity, the average temperature of the latitude zone where the water potential difference model is located, the salinity-chlorine degree conversion coefficient and the vegetation physiological characteristic parameters, and the water potential difference model is used for describing the deviation between the vegetation water potential and the soil water potential. The method fully considers the influence of the soil salinity on the photosynthesis of vegetation on the salt marsh wetland by changing the soil water potential. In addition, the water potential difference model in the method considers the direct influence of soil salinity on the photosynthesis of vegetation on the salt marsh wetland. Therefore, the method can accurately evaluate the total primary productivity of the target salt marsh wetland.

The invention belongs to the field of ecological environment evaluation and treatment, and particularly relates to a salt marsh wetland benthic organism environment DNA monitoring method giving consideration to biological invasion early warning. Comprising the following steps: 1) collecting a sample; 2) indoor analysis; 3) environment DNA extraction, PCR amplification and sequencing; and 4) data analysis. Wherein in the step (3), sediment DNA is extracted by adopting a CTAB (cetyltrimethyl ammonium bromide) method, then the purity and the concentration of the DNA are detected by utilizing agarose gel electrophoresis, a purified environment DNA sample is subjected to PCR (Polymerase Chain Reaction) amplification by using a Barcode specific primer pair environment DNA template, and the sequences of the four primers are shown as SEQ ID NO.1-8. According to the invention, salt marsh wetland benthos species lists detected by the four primers are compared, and in combination with synchronously collected morphological identification results, the method can be applied to salt marsh wetland benthos diversity monitoring and biological invasion molecule detection in various coastal provinces and cities.

The present invention belongs to the technical field of ecological restoration, and relates to an intertidal zone ecological restoration method based on the planting of salt marsh plants, including: selecting a planting area; determining the positions and distributions of individual patches, patch concentration areas, and ecological function coverage areas within the planting area; the patch concentration area includes N individual patches and tidal flats, the spacing between adjacent individual patches is 5-15 m, the area occupied by the individual patches is not less than 60%, and the area of the patch concentration area ≥ 200 m<supgt;2< / supgt>; the ecological function coverage area includes M patch concentration areas and tidal flats, the area occupied by the patch concentration areas is not less than 50%; the ecological function coverage area accounts for more than 50% of the area of the intertidal zone restoration area; planting salt marsh plants in the individual patches; the planting density per unit area in the individual patches is not less than 80 plants / m

The present invention discloses a device for influencing the drainage conditions of the surface layer of a muddy tidal flat on the colonization of salt marsh seedlings, and relates to the technical field of coastal wetland ecological restoration. It includes a drainage system and a non-drainage system. The drainage system is composed of a first water trough and a drainage device. The non-drainage system is composed of a second water trough. Two circular drain outlets are arranged on both sides of the short side of the first water trough near the bottom of the water trough. The drainage device is composed of 10 PVC pipes with the same diameter. By arranging a drainage pipe inside the first water trough, the first water trough and the second water trough are installed in a natural tidal flat environment. The first water trough and the second water trough must be placed closely and horizontally side by side. At the same time, the first water trough and the second water trough are filled with original soil. The filled original soil cannot have a slope. At the same time, the height of the original soil is flush with the height of the water trough. At the same time, the inside of the PVC pipe in the drainage device should be avoided during filling to ensure smooth drainage.

The application provides a PID-based servo drive control method and system, and relates to the technical field of servo drive control.The method comprises the following steps: acquiring robot capture operation videos of small arthropods in a salt marsh under different mechanical claw clamping forces; determining a lower limit mechanical claw clamping force for preventing falling and an upper limit mechanical claw clamping force for protecting life based on operation information under each mechanical claw clamping force; determining a plurality of first mechanical claw clamping forces based on the lower limit mechanical claw clamping force for preventing falling, the upper limit mechanical claw clamping force for protecting life and the operation information under each mechanical claw clamping force; determining a target mechanical claw clamping force based on robot capture operation videos of small arthropods in a salt marsh under the plurality of first mechanical claw clamping forces; and performing PID servo drive control on the robot based on the target mechanical claw clamping force.The method can accurately determine the best adaptive mechanical claw clamping force of the robot for capturing small arthropods in a salt marsh.

The present invention discloses a wave hydrodynamic numerical simulation method for a sea area with bamboo fence and shrub dam, which relates to the technical field of offshore wave simulation, and comprises the following steps: S1: determining a target sea area, and collecting measured water depth topographic data and sea chart water depth data of the target sea area, wherein the target sea area refers to a salt marsh beach sea area where the bamboo fence and shrub dam is planned to be arranged; S2: setting grid accuracy, and using structured grids to construct a wave hydrodynamic two-dimensional model of the target sea area; S3: setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; S4: based on the wave hydrodynamic two-dimensional model constructed in S2, using a sub-grid method to perform numerical simulation on the target sea area, and obtain the characteristic wave height and periodic space-time distribution of the target sea area. The method of the present invention can ensure the calculation efficiency, and takes into account the wave transmission characteristics of the bamboo fence and shrub dam, and can accurately simulate the influence of the construction of the bamboo fence and shrub dam on the wave hydrodynamic environment field.

The utility model provides an ecological wave-dissipating four-foot cone, which relates to the technical field of hydraulic engineering, is arranged on a wave-dissipating platform in front of an embankment, and comprises a plurality of supporting cone angles at the bottom and a planting cone angle vertically arranged at the top of the center of the plurality of supporting cone angles, the planting taper angle is detachably connected with a taper angle lower portion and a taper angle upper portion, and a planting groove and a planting cavity used for planting plants are formed in the center of the taper angle lower portion and the center of the taper angle upper portion. According to the ecological wave-dissipating four-foot cone, the wave-dissipating four-foot cone is transformed, a planting cone angle at the top is of a detachable structure, a planting groove is formed in the lower portion of the cone angle, planting soil is filled in the planting groove, salt marsh plants such as reeds are planted in the planting groove, and the upper portion of the cone angle is installed after planting. The wave-dissipating capacity of the wave-dissipating quadrangular pyramids planted with the plants has no adverse effect, but the ecological functions of biodiversity and the like in front of the embankment can be improved.