60 results about "Land area" patented technology

A permanent-temporary combined square block and caisson combined gravity type wharf comprises a land area rear storage yard, a temporary prefabricating yard used for prefabricating square blocks and caissons is arranged on the land area rear storage yard, the temporary prefabricating yard is communicated with square block structural sections through caisson shipping channels, and the square block structural sections are arranged along the coast and serve as caisson temporary shipping wharfs. The caisson shipping channel is used for transporting prefabricated square blocks and caissons; and after the caisson is transported out through the caisson shipping channel and the square structure section, the caisson is arranged to be connected with the square structure section into a whole, and the caisson structure section wharf is formed. According to the wharf, a site does not need to be additionally found to serve as a prefabrication yard and a temporary wharf as a construction site, and the temporary shipping wharf and part of the prefabrication yard are combined permanently and temporarily, so that wharf construction and dismantling cost can be saved.

The drainage system comprises a first gate shaft, a second gate shaft and a third gate shaft which are connected in sequence, the upstream side of the first gate shaft is connected with a rainwater convergence connector, the downstream side of the first gate shaft is connected with an inlet of the second gate shaft through a first gate, and the inlet of the second gate shaft is provided with a duckbill valve; water in the second gate shaft is prevented from entering the first gate shaft; the upstream side of the third gate shaft is connected with the second gate shaft through a second gate, and the downstream side is connected with a first sea drainage pipeline through a third gate and used for draining rainwater when the sea surface height is normal. The bottom of the third gate shaft is connected with a second sea discharging pipeline below the third gate shaft through a fourth gate. An upper water storage tank and a lower water storage tank are arranged at the position, lower than the normal water level of the sea surface, of the shore of the land area, the two water storage tanks are detachably communicated, a bottom outlet of the second sea drainage pipeline is connected with the upper water storage tank, and when the sea surface is at the extremely high water level, the third gate shaft drains rainwater into the two water storage tanks through the second sea drainage pipeline.

The invention relates to the technical field of ecological management, and particularly discloses an ecological restoration system and method for a water-level-fluctuating zone of a lake reservoir. The ecological restoration system is divided into a land area shoreline subsystem, a constant water level to high water level area subsystem, a constant water level to low water level area subsystem, a lake and reservoir water surface area wetland subsystem and a river inflow lake mouth pollution interception and precipitation subsystem, and multi-gradient and zonal ecological restoration from the constant water level to the high water level and the low water level is achieved. Through the multi-layer combined ecology of submerged plants, emergent aquatic plants, wet woody plants and indigenous trees, shrub and grass, a composite community system with a stable structure is formed, vegetation coverage of the hydro-fluctuation zone can be maintained throughout the year, repeated planting and restoration are not needed, a large amount of maintenance cost is saved, and the method is suitable for lake and reservoir hydro-fluctuation zones with different landforms and water level change characteristics in the whole country.

The invention discloses a multi-stage ship lock drainage and navigation multiplexing system and an operation method thereof. The system comprises a first-stage ship lock chamber section located on the upstream, a last-stage ship lock chamber section located on the downstream and a plurality of middle-stage ship lock chamber sections located between the first-stage ship lock chamber section and the last-stage ship lock chamber section. Each stage of ship lock chamber section is composed of a lock chamber bottom plate and ship lock walls arranged on the two sides of the lock chamber bottom plate. A water conveying gallery is arranged in the lock wall of the ship lock, and the middle of the water conveying gallery communicates with a branch gallery arranged in a lock chamber bottom plate through a T-shaped pipe. A plurality of water outlet holes are formed in the tops of the branch galleries; an energy dissipation pier group formed by a plurality of energy dissipation piers is arranged at the water outlet hole in the lock chamber bottom plate; and a flip bucket is arranged at the downstream end of each stage of lock chamber section of the ship lock. According to the multi-stage ship lock collaborative continuous energy dissipation scheme, the effects of improving the space utilization rate, saving the land area and reducing the construction cost are achieved.

The invention discloses a source-plant-network-river integration-based overflow pollution risk simulation evaluation method. The method comprises the steps of obtaining a source-plant-network-river integration hydrological, hydrodynamic and water quality model; simulating water quality of a plurality of river network sections, calculating the risk degree, and calculating the inflow load capacity corresponding to a plurality of source positions; collecting the population density, the water area ecological asset value and the water resource asset value close to the land area, and calculating the vulnerability corresponding to each section; calculating a river network section risk evaluation index; calculating a source position risk evaluation index; model-driven remote monitoring is adopted, the water quality of multiple river network sections is simulated, the flow-in load capacity conditions of multiple source positions corresponding to the river network sections are traced, the water environment conditions in the'source-plant-network-river 'basin can be known remotely in real time in a large range, the field monitoring construction and installation cost and the operation and maintenance cost are reduced, and the monitoring efficiency is improved. And dynamic monitoring of the whole watershed is realized.

1. Name of the designed product: land marker. 2. Use of the designed product: the designed product is used for demarcating land area. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention provides a sea area influence measurement method and device for a coastal zone land area development level, and belongs to the technical field of information suitable for administrative purposes. The method comprises the following steps: generating a plurality of equidistant sampling lines perpendicular to a coastline along the coastline, wherein each sampling line extends a preset distance towards a land area and a sea area; acquiring an intersection point of each sampling line and the coastline as a sampling intersection point SIP; calculating an index average value of all pixels penetrated by each sampling line based on land social economic index data, and assigning the average value to the corresponding SIP to form a land development level point with vertical representativeness; carrying out nearest distance matching operation on a target pixel in the sea area and each SIP (Session Initiation Protocol); and according to the Euclidean distance between the target pixel and the SIP, performing attenuation processing on the land development level represented by the SIP by adopting a Gaussian attenuation function to obtain a sea area social economic influence score of the target pixel, thereby realizing fine description of transmitting the land development level to the sea area.

The application belongs to the technical field of sea wave spectrum construction, and discloses a sea wave spectrum intelligent rapid construction method based on parameter spectrum constraint and computer equipment, which comprises a data set construction step, weather and wave element and sea wave spectrum data of a target sea area are collected, and a mask M is created to identify sea and land areas during preprocessing; a model construction and training step, a hybrid model comprising a Jonswap spectrum constraint module, a spectrum energy compensation module and a fusion module is constructed, the model is trained using the data set, and the mask M is used during training to make the loss function only based on marine area data calculation; a spectrum construction step, inputting to-be-predicted data into the trained model, and outputting sea wave spectrum. The application dynamically outputs a spectrum peak factor through deep learning, overcomes the limitation of insufficient accuracy of a traditional fixed parameter Jonswap spectrum under different sea conditions, maintains the efficiency of the deep learning method, and can significantly improve the physical rationality, interpretability and prediction accuracy of sea wave spectrum prediction.

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.

This utility model discloses a tidal tank, including a main tank, an overflow connecting pipe, a bottom filtration system, and a water circulation system. The main tank is equipped with a partition plate dividing it into a water zone and at least one land zone. The land zone includes a tidal pool and an elevated filtration isolation layer. Above the elevated filtration isolation layer forms a land area isolated from the tidal pool, and below the elevated filtration isolation layer forms a water circulation zone. The inlet end of the overflow connecting pipe extends into the water zone and is below the water level, while the outlet end extends into the land zone and is above the tidal pool. The overflow connecting pipe is equipped with a control valve to control its opening and closing. The bottom filtration system is located below the main tank, and the water circulation system connects the bottom filtration system and the main tank. The water level in the aforementioned tidal tank does not fluctuate drastically with the tides, and the bottom filtration system requires less storage space, thus reducing its space occupancy.

The invention relates to a remote sensing image quality evaluation method for an island shallow water area. The method comprises the following steps: separating an island underwater area from a land area by adopting a normalized water body index; extracting the shallow water area of the island reef by adopting relative water transparency and suspended solid total turbidity; constructing a cloud index, a cloud shadow index and a flare index to evaluate the cloud, shadow and flare conditions of the island shallow water region, and finally obtaining a plurality of special indexes; and 4, evaluating the image quality of the shallow water region of the island reef by using a special index and a general index (standard deviation, information entropy and definition). A remote sensing physical model and a traditional image quality evaluation method are organically combined, and the problem that an existing method is insufficient in applicability in an island shallow water area is effectively solved. By establishing a targeted quality evaluation system, accurate evaluation of an effective shallow water area in a satellite image is realized, and an automatic and efficient image quality evaluation solution is provided for island remote sensing monitoring.

The invention relates to the technical field of waterway measurement and terrain monitoring, and discloses a waterway earthwork dynamic monitoring system based on multi-source data of an unmanned aerial vehicle. The system is deployed on an unmanned aerial vehicle, land area data and a reference model are compared in real time through an on-orbit calculation unit, remarkable changes of areas such as a shoreline are recognized, and a water area detection interestingness map is generated in combination with a hydrodynamic model. Based on the map, the system adaptively plans an optimal detection path, flies along the path, and measures the water depth in a non-contact manner by using an acousto-optic technology. And finally, the system fuses real-time measurement results of the land area and the water area, performs differential analysis with the reference model, accurately calculates earthwork change indexes such as the total filling amount and the total excavation amount, and automatically generates a visual comprehensive report. Water area detection is intelligently guided through land area changes, efficient focusing and path optimization of monitoring tasks are achieved, and a rapid, accurate and safe monitoring means is provided for dynamic changes of channels.

The invention belongs to the technical field of sea wave spectrum construction, and discloses a parameter spectrum constraint-based sea wave spectrum intelligent rapid construction method and computer equipment, and the method comprises the steps: a data set construction step: collecting meteorological and wave elements of a target sea area and sea wave spectrum data, and creating a mask M during preprocessing to identify a sea-land area; a model construction and training step: constructing a hybrid model comprising a Jonswap spectrum constraint module, a spectrum energy compensation module and a fusion module, training the model by using a data set, and using a mask M to enable a loss function to be calculated only based on ocean region data during training; and a spectrum construction step: inputting to-be-predicted data into the trained model, and outputting a sea wave spectrum. According to the method, the spectrum peak factor is dynamically output through deep learning, the limitation that a traditional fixed parameter Jonswap spectrum is insufficient in accuracy under different sea conditions is overcome, and the physical rationality, interpretability and forecasting precision of sea wave spectrum forecasting can be remarkably improved while the high efficiency of the deep learning method is kept.

The present invention relates to the technical field of port breakwater structure design, and in particular, to an assembled eco-friendly water-permeable breakwater structure, comprising a geotechnical waterproof material layer, a flexible mattress layer, a riprap layer, a gravel layer, a gabion, a land area, a solid component, a water-permeable component, and a power generation component. The flexible mattress layer is arranged above the geotechnical waterproof material layer, and the riprap layer is arranged above the flexible mattress layer. The gravel layer is arranged above the riprap layer, and the water-permeable component is arranged above the gravel layer. The solid component is arranged above the water-permeable component, and the power generation component is arranged on one side of the solid component. One end of the geotechnical waterproof material layer borders the land area, and one side of the water-permeable component borders the land area. The gabion is arranged at an edge of the geotechnical waterproof material layer. To improve conventional breakwater structures, the present invention uses an assembled breakwater, and designs an underwater portion thereof as a water-permeable structure, so that seawater inside and outside a port area can circulate. In addition, wave energy power generation is used to improve the aesthetics of the breakwater.

Water-adjacent containment structure of the deep excavation pit for soft soil, consisting of a containment structure in the land area and a containment structure in the water area; characterized in that The containment structure in the land area is arranged on the inner side of the excavation and comprises an inner diaphragm wall, an outer diaphragm wall, a surcharge slab, and several rows of anchor rods; wherein the inner diaphragm wall and the outer diaphragm wall are arranged at intervals along the inner side of the excavation; wherein the surcharge slab is cast between the heads of the inner diaphragm wall and the outer diaphragm wall, the width of the surcharge slab being greater than the distance between the inner diaphragm wall and the outer diaphragm wall plus the thickness of the inner diaphragm wall and the outer diaphragm wall; wherein the projecting part of the surcharge slab is located on the inner side of the inner diaphragm wall; wherein the upper ends of the several rows of anchor rods are anchored at intervals to the underside of the projecting part of the surcharge slab, the anchor rods being anchored obliquely in the underside below the projecting part of the surcharge slab; wherein the enclosure structure in the water area is arranged on the outer edge of the excavation and on the two side edges of the excavation and comprises several main steel grid cylinders uniformly driven into the seabed as well as several pairs of arcuate secondary steel grid plates connected between two adjacent main steel grid cylinders; wherein the interior of the main steel grid cylinders as well as the secondary grid space formed by two arcuate secondary steel grid plates and two adjacent main steel grid cylinders are filled with sand; wherein two main lattice steel cylinders, which are located symmetrically at the inner ends of the two side lines of the excavation pit, each fit with a pair of end-curved secondary lattice steel plates to the two ends of the inner diaphragm wall of the perimeter structure in the land area, wherein the resulting cavities between the pairs of end-curved secondary lattice steel plates and the internal main lattice steel cylinders of both side lines and the inner diaphragm wall are concreted symmetrically.

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 invention discloses a coastal city land utilization pattern optimization method based on land-sea carbon sink potential excavation, and the method comprises the steps: S1, determining a target sea area and related land, and delimiting a coastal city land-sea integration range; s2, based on the land utilization data of the associated land, accounting the carbon emission of the land area; s3, based on measured data and the numerical model, establishing a calculation method of land utilization-pollution production and discharge-sea area carbon sink capacity; and S4, constructing a multi-target space optimization model to realize land utilization pattern optimization. According to the method, land and sea carbon sink potential social economic targets are jointly incorporated into a space explicit multi-target optimization framework, a corresponding calculation model and algorithm are developed to realize refined space planning of land and sea overall planning, and an innovative thought of coastal city land utilization planning is provided.

The invention discloses a national asset supervision method based on geographic information layering, and relates to the technical field of supervision management, and the method comprises the steps: generating a digital elevation model based on a dike center line of a flood control dike, and generating an elevation function based on the digital elevation model; calculating a middle elevation based on the elevation function, and generating a levee shoulder candidate stage based on the middle elevation; generating a plane coordinate based on the levee shoulder candidate stage, and generating a levee shoulder center line based on the plane coordinate; and calculating the average levee shoulder width based on the levee shoulder center line, and calculating the total occupied area of the hidden inner levee shoulder in the flood control dam based on the average levee shoulder width. According to the invention, the integrity and refinement level of national asset supervision are improved.

The invention relates to the technical field of land area surveying and mapping, and discloses a measuring device for land area surveying and mapping and a use method.The measuring device comprises an equipment top plate, connecting bases are fixedly installed on the left side and the right side of the lower end face of the equipment top plate, and a transmission rod is rotationally installed between the connecting bases on the left side and the right side; supporting plates are fixedly mounted on the front side and the rear side of the lower end face of the equipment top plate, positioning cylinders are rotationally mounted in inner cavities of the supporting plates, and the supporting mechanisms are arranged on the left side and the right side of the lower end face of the equipment top plate; a lifting mechanism; a storage mechanism; and a clamping mechanism. Through the arrangement of the supporting mechanism, the supporting arms can be unfolded towards the outer side, the stability of the whole device during use is guaranteed, through the arrangement of the lifting mechanism and the storage mechanism, the total station can be rapidly unfolded and stored, the use efficiency of a user is improved, and finally through the arrangement of the clamping mechanism, the total station can be conveniently and rapidly unfolded. And the safety of the total station during carrying can be effectively ensured.

The invention relates to an offshore sparse label wind field correction method based on region migration. Model parameters obtained from land region training are shared to an ocean region wind speed correction model in a parameter migration mode. The method is characterized in that data mainly including a ground area is used as a source domain to carry out source task training, trained network parameters are used as initialization parameters of a target task training model, and then the network is finely adjusted through data of a target domain mainly including an ocean area. Finally, the effectiveness of the method is verified on a meteorological data set, the overfitting problem caused by less offshore reference data is solved to a certain extent, and the convergence speed of the network can be increased while the accuracy is improved.

The invention provides a universal satellite remote sensing atmospheric roof radiation simulation method, which belongs to the technical field of remote sensing image data processing, and comprises the following steps: (1) calculating latitude and longitude and observation geometric information of a transit area; (2) constructing global environment parameter background field data; (3) respectively performing radiation simulation on the ocean area and the land area in the transit area; (4) respectively calculating the atmospheric top radiance of the ocean area and the atmospheric top radiance of the land area; and (5) splicing the atmospheric top radiance data of the ocean area and the atmospheric top radiance data of the land area to obtain the atmospheric top radiance data of the whole image. According to the universal satellite remote sensing atmosphere top radiation data simulation method, the reliability of a physical model and the modeling capacity of a neural network are combined, the problem that existing satellite remote sensing atmosphere top radiation simulation is low in reliability is solved, and compared with full-data neural network simulation, consumed time is shorter.

The utility model discloses a sand pool structure, include: sand pool body, it extends to ground surface upper end to prolong sewage sedimentation time and reduce flow velocity, sewage cavity is located at the end of sand pool body, and the sand removing mechanism is arranged obliquely and is used for dynamic separation of silt and water, and the dosing member is erected at the end of sewage cavity, and the flowing sewage is dosed and mixed, and the outflow channel and inflow channel are located at both sides of sand pool body and respectively guide sewage to enter sewage cavity and discharge sewage after sand removing, the sand pool body of the utility model extends to ground surface upper end, effectively prolongs sewage residence time and reduces flow velocity, and the problem of insufficient sedimentation caused by the shallow water depth of traditional pool body is solved, the outflow channel and inflow channel of L type design further reduce flow velocity while improving the processing capacity, compared with the sand pool of horizontal flow type, the sand particle escape rate is reduced greatly, and the land area does not need to be expanded additionally, and the processing efficiency and space cost are balanced.

The invention provides an amphibious three-dimensional model seam color transition method based on surface primitive Poisson fusion, and relates to the field of data processing. According to the method, after three-dimensional models of a water area and a land area are geometrically fused, water area pseudo-color textures are constructed based on water depth information, land area real image textures are obtained, a water and land boundary line is extracted through unified topology analysis, and a plane primitive buffer area is constructed around the boundary line; local color change constraints of a water area and a land area are introduced into a buffer area, a guiding gradient field is constructed, then a Poisson fusion model is established based on a surface primitive topological relation, surface primitive colors are solved in a unified mode under boundary color constraints, and continuous transition and visual consistent fusion of texture colors of a water and land joint area is achieved. By implementing the technical scheme provided by the invention, the color transition quality of a large-range land and water joint area can be effectively improved.

The application provides a method and device for determining a suitable growth area of vegetation in an inland river shore belt based on multi-source images, and the method comprises the following steps: 1. Based on image data of a research river section, water and land area division is performed on each image, and a binary submerged image data set is constructed; 2. Shore beach long-duration average submergence frequency calculation based on pixel scale; 3. Shore vegetation coverage area is extracted from each image, and a binary coverage image set is constructed; 4. Long-duration inland shore beach vegetation appearance frequency calculation based on pixel scale; 5. The target river section area is divided into suitable growth areas of the inland shore belt vegetation; according to the grid data of the multi-year average submergence frequency FF and the vegetation appearance frequency VF of the target river section area, a scatter plot and a kernel density cloud map of FF~VF are obtained, and then the suitable growth area of the shore vegetation is divided, and the critical submergence frequency threshold of the suitable growth of the shore vegetation is obtained.

This invention discloses a multi-compartment super ship lift, relating to the field of navigation technology for river water conservancy projects. It includes a lifting tower with an internal lifting channel and bridge compartments within the lifting channel. Several fixed pulleys are arranged on both sides of the lifting channel at the upper part of the lifting tower, aligned along the ship's entry and exit direction. Each pulley is connected to a steel wire rope, one end of which is connected to the bridge compartment via a bridge compartment gravity sensor, and the other end is connected to a counterweight via a balance weight sensor electronic crane scale. Chain lifting drives are installed inside both sides of the bridge compartments, with gears meshing with the chains. At least two parallel bridge compartments are arranged on the same navigation facility axis within the lifting tower. The bridge compartments are connected to each other via a bridge compartment docking compartment and a watertight compartment, and the waterway is controlled by a tilting door. Compared with existing technologies, this invention enables simultaneous navigation of multiple ships in multiple compartments, offering advantages such as small land area occupation, low investment, low energy consumption, and high navigation efficiency.

The invention discloses an open-sea platform communication network architecture and a scheduling, transmission and disaster recovery method thereof. The communication architecture comprises a switch, an aggregation link and an open-sea platform, the switch is arranged in a land area and used for bearing a control plane function, and the switch is in communication connection with the open sea platform through the aggregation link; the aggregation link is arranged in an offshore area between the switch and an open sea platform and is used for performing service data transmission; wherein the aggregation link is composed of a plurality of relay points, and all the relay points adopt grid management; the open sea platform comprises a plurality of intelligent gateway devices used for bearing a user plane function, and the intelligent gateway devices are in communication connection with the relay points respectively. According to the invention, the communication stability and reliability of the open-sea platform can be improved.

The invention relates to the technical field of estuary coast hydrodynamics and numerical calculation grid generation, and discloses a water area simulation method and device based on land boundary constraint and electronic equipment. Identifying a land grid, a water area grid and a boundary grid in the rectangular grid according to a land boundary polygon in the target area, wherein the target area comprises a land area and a water area; cutting the boundary grid according to the land boundary polygon to obtain a cut grid, wherein an area corresponding to the cut grid is a water area; updating the grid attribute of the boundary grid according to the cutting result to obtain the grid attribute of the cutting grid; and performing numerical simulation on the water area in the target area according to the grid attributes of the water area grid and the cutting grid to obtain a simulation result. According to the method, the water area rectangular grid boundary based on the land boundary constraint is cut, and the grid attribute is updated, so that high-precision numerical simulation of the complex water area is realized.

The application provides a kind of adaptive CFAR detection method based on scene classification, uses K-means clustering algorithm and the scene classification of input SAR image, uses VI-CFAR to the pure sea area region obtained by classification for target detection, using saliency model to the CFAR detection of coastal area.The application effectively solves the problem that the false alarm rate of traditional CFAR algorithm is high in the complex background of port and land, and the detection performance is unstable, optimizes the detection parameter according to the complexity of different scene backgrounds, so as to ensure that the CFAR algorithm can still maintain a constant false alarm rate in the sea clutter background, and significantly improve the robustness of target detection.Effectively distinguish the marine area and land area in the image, and shield the land area.This technical scheme solves the problem that the traditional CFAR detection algorithm is disturbed by the complex background of land when detecting ships on the sea.

The invention provides a multi-source remote sensing ecological evaluation method and device considering water quality, and the method comprises the steps: carrying out the preprocessing of satellite image data according to an analysis result of a StateQA wave band and a preset research boundary, and obtaining the processed satellite data; acquiring data through an unmanned aerial vehicle control system according to a preset target area and a preset cruise path to obtain an unmanned aerial vehicle shot image; separating a water body and a land in the satellite image data through a threshold method to obtain land area data and water body area data; evaluating water quality according to the water body area data and the processed satellite data; ecological assessment is carried out according to land area data and processed satellite data; calculating according to the water quality evaluation value and various land index values to obtain a multi-source remote sensing ecological evaluation index considering the water quality; based on the index grade, according to the multi-source remote sensing ecological evaluation index, evaluating the ecological environment of the preset target area to obtain an ecological evaluation value; according to the method, more comprehensive ecological environment quality evaluation is realized by coupling water quality evaluation and land indexes.

The application discloses a clear water taking structure in turbid water area and belongs to the technical field of hydraulic engineering. The structure is arranged between an upstream turbid water area and a downstream river channel and comprises a water taking and discharging control system, a water inlet system and a water filtering system capable of controlling the sand particle size and sand content within a certain range. The upper portion of the water inlet system is provided with a water inlet connected with the turbid water area, the bottom is connected with the input end of the water filtering system, the output end of the water filtering system is connected with the input end of the water taking and discharging control system, and the filtered silt is discharged to the downstream river channel by the water filtering system. Compared with the existing turbid water guiding and sand filtering technology, the turbid water guiding engineering, the silt filtering engineering outside the turbid water area and the silt treatment engineering are omitted, so that the structure has the advantages of small land area, low cost, wide water head adaptation range, high silt discharging capacity and the like, solves the problem that the existing turbid water area cannot directly supply clear water during flood season, and can simultaneously meet the requirements of users on different sand particle sizes and sand contents in water.