43 results about "Ecological engineering" patented technology

The invention relates to the technical field of marine ecological engineering, in particular to a marine coral reef ecological restoration method based on a foamed aluminum base material, which comprises the following steps: preparing a modified foamed aluminum main body structure, constructing a modified bioactive surface layer, filling a modified phase change material capsule, and putting a restoration unit. According to the invention, the foamed aluminum main body structure provides a stable three-dimensional through porous network, and a natural reef habitat environment is simulated; a hydroxyapatite coating or a polymer layer constructed on the surface of the coral bone-imitating material remarkably improves the coral larva attachment and colonization efficiency through coral bone-imitating inorganic components or specific polypeptides respectively; the phase-change material capsules filled inside buffer water temperature fluctuation through phase-change latent heat, a stable micro-thermal environment is provided for coral growth, the functions of all the components are complementary and synergistic, foamed aluminum provides a carrier for surface functionalization, the surface active layer optimizes a biological interface, the internal temperature adjusting unit guarantees ecological suitability, and an efficient repairing system is formed. The coral reef ecological restoration effect is obviously improved.

The invention discloses a novel artificial wetland water treatment test method, and particularly relates to the field of environmental protection and ecological engineering. In order to overcome the defects that a traditional constructed wetland is limited by environmental conditions and is insufficient in treatment efficiency, improvement of the purification effect and the regional adaptability serves as a core target, and wetland form optimization, water flow mode improvement, water level adjustment design, filler combination screening, wetland regional adaptability and other work are carried out. An experiment takes acorus calamus as a purification plant, selects common filler to construct different wetland units, and compares and analyzes treatment effects of different subsurface flow modes, and finds that a horizontal-vertical subsurface flow coupling system is better in pollutant removal, and different matrix combinations have different removal effects on different pollutants. The method has the advantages of low operation cost, low cost, simple maintenance and management, reduction of secondary pollution, ecological restoration and environmental value, promotion of the cyclic utilization of water resources, and development of environmental protection and sustainable development.

The invention provides an overflowing structure for ecological reconstruction of a barrage and an energy dissipation design method, and relates to the technical field of water conservancy projects and ecological restoration. The method comprises the following steps: acquiring original hydraulic parameters, landform data, ecological baseline data and transformation constraint conditions of a target barrage; constructing a deep learning model for parameter optimization based on the data; the transformation constraint conditions are input into the trained model for multi-objective optimization calculation, at least one optimization design scheme is generated and output, and the scheme comprises two key evaluation indexes including the overflowing structure form and energy dissipater arrangement parameters and the ecological flow state integrating degree and the structure ecological benefit balance coefficient; and generating a final construction drawing and a technical file based on the optimization design scheme. According to the method, intelligent generation and multi-objective quantitative optimization of an ecological transformation scheme are realized, and the design efficiency and the comprehensive benefits of ecological engineering are effectively improved.

The invention discloses a wetland nitrogen cycle optimization method and system based on machine learning, and belongs to the technical field of ecological engineering.The method comprises the steps that according to a comprehensive environment data set, a transverse lateral infiltration path and a vertical priority flow path are recognized, spatio-temporal evolution simulation is conducted through a cellular automaton model, and a nitrogen migration path is constructed; analyzing the interaction between the water flow driving flux and the underground water level on the path resistance, and determining the broadening degree of the transverse lateral seepage path; if the widening degree exceeds a preset threshold value, integrating the water body turbulence intensity data and the flow velocity shear effect value, and obtaining a bubble escape rate and a surface sediment disturbance frequency; calculating the nitrogen saturation and the spatial distribution of the sediment particle suspension amount, and obtaining the total re-release flux through flux overlay analysis; and constructing a nitrogen loss flux model in combination with the fluctuation rule, simulating the change of the nitrogen loss proportion, and determining the net nitrogen loss flux. According to the invention, fine monitoring of the dynamic change of wetland nitrogen can be realized.

A method for improving the germination of *Carex lumbricoides* seeds based on nano-zinc oxide initiation belongs to the field of wetland ecological engineering technology. The invention includes the following steps: First, nano-zinc oxide particles with a particle size of 30±10 nm are dispersed in deionized water by ultrasonic oscillation to prepare a suspension of 12.5-200 mg / L; second, collected *Carex lumbricoides* seeds are float-screened, and plump seeds that sink to the bottom are selected and subjected to surface sterilization; subsequently, the sterilized seeds are immersed in the nano-zinc oxide suspension and initiated by agitation under light-proof conditions for 6 or 24 hours, followed by air drying to restore the initial moisture content; finally, the initiated seeds are placed in an artificial climate incubator for germination culture under specific variable temperature and light conditions. This invention utilizes the biocompatibility of nano-zinc oxide and effectively solves the problems of long germination cycles and low germination rates of *Carex lumbricoides* seeds by precisely controlling the initiation concentration and time. This invention has the advantages of simple operation, low cost, and environmental friendliness, and can significantly improve the germination rate and germination percentage, providing high-quality seedlings for the restoration of degraded wetland vegetation.

The application relates to the technical field of environmental science and ecological engineering, and provides an evaluation method for an influence mechanism of cultivated land expansion on a water-carbon trade-off relationship. The method is based on land use data of a preset time period in a dry research area to obtain each cultivated land expansion patch; the CASA model and the PT-JPL model are used to obtain carbon fixation amounts and evaporation amounts of the cultivated land expansion patches, and a water-carbon trade-off degree is evaluated; a water-carbon trade-off degree is used as a dependent variable for detrend processing to obtain a detrended dependent variable; expansion sources, location characteristics and landscape indexes are used as a group of independent variables, the independent variables are processed through multiple collinearity and principal component analysis to obtain a global independent variable group; sorting analysis and grey correlation degree analysis methods are used to evaluate independent influence degrees of each independent variable in the global independent variable group on the dependent variable and comprehensive influence degrees among multiple independent variables. The method realizes accurate evaluation of the influence mechanism of cultivated land expansion in a dry area on a water-carbon trade-off.

The invention relates to a method for synergistically enhancing bank slope vegetation water quality purification through arbuscular mycorrhiza and nitrifying bacteria, and belongs to the technical field of water environment ecological management and ecological engineering. The method comprises the following three core steps: preparation of an arbuscular mycorrhiza-nitrifying bacteria immobilized complex microbial inoculant, construction of a bank slope vegetation rhizosphere microhabitat, and cooperative regulation and control of system stabilization and purification functions. According to the method, the rhizosphere microhabitat of the bank slope vegetation is actively intervened by artificially inoculating the fungicide formed by the arbuscular mycorrhiza and the nitrifying bacterium community, and the symbiotic system formed by the arbuscular mycorrhiza-nitrifying bacterium composite community and the plants is utilized, so that the method is environment-friendly, high in cost benefit, simple and stable in operation condition, easy to engineer and suitable for large-scale popularization and application. And an innovative solution is provided for realizing synergistic interaction of bank slope ecological restoration and water quality purification.

The invention discloses an ecological restoration device for a three-dimensional latticed marine ranch, which belongs to the technical field of marine ecological engineering and comprises a net cage frame, a biological filtration module, a nutrient solution supply module and a plurality of sensor systems. The biological filtration module consists of an algae agglutination unit and a shellfish filtering unit and is used for purifying water. A tension sensor and a fiber grating sensor array are arranged on the net cage frame, structural stress changes can be monitored in real time, the damaged position of the netting can be accurately positioned, if damage is detected, the system releases humic liquid through a micro valve, plankton and small fishes are attracted to gather, algae and microorganisms are promoted to adhere and grow at the damaged position, and a biological barrier is formed; the self-repairing of the netting is realized. In addition, the device integrates functions of shellfish behavior monitoring, netting cleaning, pH adjusting and the like, so that the ecological restoration efficiency and the system reliability are improved, and the device is suitable for ecological maintenance and culture management of marine ranches.

This invention discloses a method for creating fish habitats based on swarming effects, belonging to the fields of fish ecological engineering and water conservancy engineering. Existing technologies for creating fish habitats suffer from incomplete quantification of swarming behavior and a lack of quantitative correlation with engineering design parameters, leading to habitats that are difficult to match the needs of fish swarming. This invention quantifies spatial aggregation, movement synchronization, and turbulent adaptability, calculates a comprehensive swarming index and a group spatial demand coefficient, establishes a direct conversion model between swarming behavior indicators and habitat design parameters, and determines flow field control methods and structural layout methods based on the comprehensive swarming index and the group spatial demand coefficient, thereby creating fish habitats. This invention can comprehensively characterize swarming behavior, scientifically guide engineering design, and improve habitat applicability and utilization.

This invention relates to the fields of highway ecological engineering and traffic safety engineering technology, and discloses a construction method for ecological buffer zones at highway tunnel entrances. This method involves preliminary surveying to complete the functional zoning design of the buffer zone, followed by sequential implementation of foundation remediation and slope stabilization treatment, construction of a layered buffer structure system, construction of zoned adaptive ecological communities, and construction of a light control and disaster prevention system. Finally, it culminates in quality acceptance and the establishment of a long-term maintenance system. This invention, through a technical approach of "zoning design - structural synergy - functional integration," simultaneously addresses six core pain points at tunnel entrances: abrupt changes in driving light environment, traffic noise pollution, slope instability, road surface pollution, ecological fragmentation, and insufficient emergency disaster prevention. The constructed buffer zone combines multiple functions, including driving safety assurance, ecological restoration, pollution control, and landscape coordination. The construction process is standardized, highly replicable, has a high vegetation survival rate, and low subsequent operation and maintenance costs, meeting the requirements for green highways and ecological transportation construction.

This invention provides a riverbank slope reinforcement structure and construction method, relating to the field of river management and ecological engineering technology. The riverbank slope reinforcement structure includes multiple inverted trapezoidal frames, horizontal connecting beams, and a base of coarse sand and gravel and clay. The multiple inverted trapezoidal frames are arranged at equal intervals along the length of the river. Each inverted trapezoidal frame includes a base plate, two side walls, and a top plate. The horizontal connecting beams connect the multiple inverted trapezoidal frames sequentially, forming a vegetation planting area on both sides of the riverbank slope between the multiple inverted trapezoidal frames and the horizontal connecting beams. A coarse sand and gravel backfill structure is set between the base plates of two adjacent frames, and a clay layer fills the bottom of the river and the two sides of the riverbank slope. This riverbank slope reinforcement structure can ensure the stability of the riverbank slope reinforcement structure while reducing engineering costs; on the other hand, it can effectively green the riverbank environment and significantly improve the ecological landscape effect of the river.

The invention discloses a water conservation evaluation system and method based on ecological protection engineering, and relates to the technical field of water conservation evaluation, the system comprises an information acquisition module, an analysis and calculation module, an evaluation module and a database, grid division is performed on a monitoring drainage basin to obtain drainage basin units, and monitoring moments are set; the rainfall, land utilization type, potential evapotranspiration and soil attribute information of each drainage basin unit are collected at each monitoring moment, the monitoring drainage basin is divided into a marked area and each ecological engineering area, the water conservation amount of each drainage basin unit is calculated according to monitored data for the marked area, and the water conservation amount of each ecological engineering protection area is calculated according to the monitored data for each ecological engineering protection area. According to the method, the influence of each ecological protection project on soil is analyzed, the water conservation amount of each drainage basin unit is calculated according to the analysis result, and the change characteristics of the water conservation amount are obtained through Sen + M-K trend analysis, so that the calculation accuracy and effectiveness of the monitoring drainage basin water conservation amount are guaranteed, the calculation cost is reduced, and the ecological protection project can be monitored for a long time.

The present application relates to the technical field of urban water ecological system regulation and management, and particularly relates to a method and system for reconstructing an urban river ecological system based on tail water of a sewage treatment plant. The method comprises the following steps: introducing tail water of the sewage treatment plant into a parallel or surrounding artificial wetland deep purification corridor for purification, collecting the purified tail water quality, mixing the purified tail water quality at a water distribution hub, and implementing pulse ecological water replenishment to the downstream of the river through a pre-set intelligent dam; collecting initial topographic data of the smooth hard river, determining habitat size parameters in combination with habitat conditions required for aquatic organisms to survive, and reconstructing the river topography to form a sequence of habitat units. The present application reconstructs a tail water type river ecological system with rich biodiversity, self-purification capacity and self-maintenance capacity to improve the controllability and long-term stability of urban ecological engineering.

The invention provides a natural ecosystem investigation method. The natural ecosystem investigation method comprises the following steps: S1, acquiring a high-resolution remote sensing image and DEM data, and dividing ecosystem types; s2, typical ecological problems of the ecological system are determined, sample plot design and sample plot dynamic arrangement are carried out, investigation points are arranged in a sample plot, and sampling analysis is carried out; and S3, performing data analysis according to the plaque partition map, the sample plot location map and the remote sensing image map. According to the dynamic survey method combining quadrat / transect and sampling point actual ground survey, the mutual verification of ground, remote sensing and model data is realized by combining a satellite remote sensing and model simulation technology with multiple data sources, typical / important ecological problem partitions in a watershed ecosystem range are found out and verified, and a watershed ecological system is established. Support is provided for design and implementation of the ecological engineering project, and a data index basis is provided for acceptance of the ecological engineering project.

The invention relates to the technical field of environmental science and ecological engineering, and provides a method for evaluating an influence mechanism of cultivated land expansion on a water-carbon tradeoff relationship. The method comprises the following steps: acquiring each cultivated land expansion patch based on land utilization data of a drought research area in a preset time period; utilizing a CASA model and a PT-JPL model to respectively obtain the carbon sequestration amount and evapotranspiration amount of each cultivated land expansion patch, and evaluating the water carbon tradeoff; taking the water-carbon balance degree as a dependent variable to carry out detrending processing to obtain a detrended dependent variable; taking an expansion source, a location feature and a landscape index as an independent variable group, and processing independent variables through multi-collinearity and principal component analysis to obtain a global independent variable group; and respectively evaluating the independent influence degree of each variable in the global independent variable group on the dependent variable and the comprehensive influence degree among the multiple independent variables by adopting a sorting analysis method and a grey correlation degree analysis method. According to the method, accurate evaluation of the water-carbon tradeoff mechanism influenced by arid area cultivated land expansion is realized.

The invention discloses a road domain scale traffic infrastructure ecological benefit improvement quantitative evaluation method, and belongs to the crossing field of traffic engineering and ecological informatics. According to the method, acquisition of ecological environment changes before and after road construction is taken as a research object, and multi-source ecological environment data such as vegetation, soil, weather, habitat quality and landscape pattern of a road influence area and a contrast area are acquired; an integrated evaluation index system is constructed from three dimensions of a land resource occupation reduction rate, an ecological function improvement rate and a landscape pattern optimization rate; by comparing a traditional construction scene with an ecological optimization road scene, the net ecological effect improvement amount generated by ecological engineering measures is quantitatively calculated. The method overcomes the defects that an existing evaluation method neglects positive benefits, is extensive in scale and is single in index, achieves the precise, quantitative and integrated benefit evaluation of the whole process of linear traffic engineering such as roads and railways from source avoidance to function improvement, and provides core technical support for ecological design and decision making.

The utility model relates to the technical field of ecological engineering, in particular to a non-point source pollution intercepting belt. Comprising a plurality of diversion purification belts and a regulation and storage diffusion well, the diversion purification belts are of inclined diversion structures which are arranged on a slope and intersect with the slope direction, each diversion purification belt comprises a water retaining structure and an adsorption structure arranged on the upstream side of the slope direction of the water retaining structure, and the diversion purification belts are sequentially arranged in the direction perpendicular to the slope direction; and the regulation and storage diffusion well is a regulation and storage structure which is arranged at the lower end of the diversion purification zone and is used for storing sewage. The source pollution interception belt is simple in structure, initial rainwater can be effectively collected into the dispersed regulation and storage diffusion wells for regulation and storage, and pollution of the initial rainwater to a receiving water body is effectively reduced.

The application provides a forest small and micro water source group community construction method and system based on an ecological chain, relates to the technical field of ecological engineering, and comprises the following steps: selecting a natural catchment area according to forest topographic features, constructing a water area unit with a layered anti-seepage structure, arranging an anti-seepage layer at the bottom to realize water collection, and arranging a water-permeable transition layer at the edge to form a water-land gradient; dividing the water area unit into multiple ecological function areas according to the water depth gradient and spatial position and introducing matching species; dynamically adjusting the species ratio and spatial layout of adjacent function areas based on the functional correlation of material circulation and energy transmission by monitoring the population density and water quality indexes, forming a self-sustaining ecological chain; arranging a microorganism cultivation layer around the periphery, calculating the inoculation proportion of saprophytic microorganisms, calculating the soil organic matter conversion amount according to the population density and decomposition rate, and establishing the dynamic balance of the water supply amount of the water area, the metabolic activity of microorganisms and the physical and chemical properties of forest soil. The water source ecological system constructed by the application has high stability, can effectively improve the water holding capacity of forest soil and reduce the risk of fire.

The invention discloses a cultivation and propagation method of aquatic crust, and relates to the technical field of environmental restoration and ecological engineering. The method comprises the following steps: mixing algae powder serving as an aquatic crust seed source with minerals and micro-nano metal oxides to form a matrix, adding a metal nutrient solution, and culturing until the porous spongy aquatic crust is formed. According to the method, the microstructure and components of the aquatic crust are regulated and controlled through specific conditions, artificial cultivation of the aquatic crust is achieved for the first time, the cultivated aquatic crust is high in adsorption capacity and fixing efficiency on typical environmental pollutants such as heavy metal, and the cultivation and propagation method has the advantages of being high in stability, low in cost, environmentally friendly and the like.

The utility model relates to the technical field of irrigation devices, and discloses an irrigation device for water and soil conservation ecological engineering, which comprises a bottom plate, the upper part of the bottom plate is fixedly connected with a fixed table and a water tank, one side of the water tank is fixedly connected with a water delivery pipe, one end of the water delivery pipe is fixedly connected with a communicating vessel, and the communicating vessel is fixedly connected with the water tank. A switch assembly is mounted in the communicating vessel; the switch assembly comprises a sealing block, the sealing block is slidably connected into the communicating vessel, a connecting rod is fixedly connected to the top of the sealing block, a pressing handle is rotatably connected to the other end of the connecting rod, a fixing rod is rotatably connected to one side of the pressing handle, and the bottom of the fixing rod is fixedly connected to the fixing table. According to the utility model, two irrigation ports are designed, and the lower controllable drip irrigation device is used, so that places where water is not supplemented in place during spray irrigation are made up, and inconsistent growth of crops is avoided.

The invention relates to the field of water resource evaluation, and particularly discloses a regional water resource toughness evaluation method based on multiple factors, and the method comprises the following steps: S1, collecting meteorological, hydrological, social economic, ecological and engineering data of a region, and carrying out the classification and processing of the data, and constructing a comprehensive database; s2, based on the comprehensive database, selecting a plurality of indexes from five dimensions of meteorology, hydrology, social economy, ecology and engineering under each dimension, and constructing an evaluation index system; s3, calculating the factor importance of each index, and selecting a main influence factor under each dimension; s4, calculating the influence degree of each main influence factor on the water resource toughness, and selecting the factor with the maximum influence degree under each dimension as a main driving factor; and S5, representing the dimension by the main driving factor under each dimension, and respectively calculating the coupling degrees among the dual systems, the three systems, the four systems and the five systems to analyze the interaction degree among the systems so as to complete the water resource toughness evaluation.

The invention discloses a micro-ecological system for purifying river water quality. The micro-ecological system comprises timber piles, functional ecological bags, geogrids and submerged plants, the micro-ecological system is round or square, the periphery of the micro-ecological system is fixed by timber piles, and a solar microporous aeration disc is arranged in the center of the micro-ecological system; at least one functional ecological bag is arranged in the micro-ecological system, modified functional filler is filled in the functional ecological bag, a geogrid is arranged above the functional ecological bag, the geogrid is fixedly connected with the timber piles on the periphery, and submerged plants are arranged on the geogrid. The system organically integrates the stability of civil engineering, the activity enhancement of environmental engineering and the natural restoration capability of ecological engineering, and realizes long-term, stable and low-energy-consumption purification of nitrogen, phosphorus, organic matters and other pollutants in river water.

The invention discloses a high-load bionic soft body reactor and a water ecological restoration method, and relates to the technical field of water environment protection and ecological engineering. The reactor comprises a structural frame and bionic soft biological ropes fixed on the structural frame, and curtain type or array type reaction units with regular structures are formed; the surface of the bionic soft biological rope is provided with a bionic multi-stage attachment structure, the bionic soft biological rope is made of a composite material of a high-molecular polymer matrix and a functional filler prepared by a composite processing technology, the bionic soft biological rope has high specific surface area and excellent biocompatibility, the apparent density is 0.95-1.05 g / cm < 3 >, and the bionic soft biological rope can realize nearly neutral buoyancy and ordered swing in a water body; during application, the reactor units are laid in a water body, pollutants are efficiently degraded by utilizing the biological membranes attached to the surfaces of the biological ropes, and mass transfer and biological membrane renewal are continuously enhanced through ordered swinging of the biological ropes. The system has the advantages of high treatment load, fast starting, easy deployment, convenient maintenance and the like, is suitable for in-situ remediation of landscape water bodies, polluted rivers, black and odorous water bodies and the like, and has wide application prospects.

The invention relates to the technical field of ecological engineering and wetland restoration, in particular to a comprehensive restoration method for rapidly improving functions of a bird breeding place of a degraded marsh wetland, and aims to solve the problems of nest site deficiency, insufficient food sources and man-made interference confronted by bird breeding in the degraded wetland. Repair is carried out through comprehensive measures of combining nest site accurate configuration, food source directional strengthening and interference system control. The method specifically comprises the steps that mandarin duck nest boxes and small nest boxes are hung on a suitable wetland, haystacks are built, and diversified nest sites are provided for different birds; putting benthonic animals and fishes in the shallow water area to supplement a food source; meanwhile, propaganda education is carried out on surrounding residents, closed management is carried out on the protection forest in the breeding season, and man-made interference is reduced. According to the method, the bird breeding function of the degraded wetland can be quickly and specifically recovered, the number and diversity of bird populations are improved, and the method has the characteristics of simplicity and convenience in implementation, low cost and quick effect, and is suitable for ecological restoration and function improvement of the degraded marsh wetland.

The invention discloses a permeable filler and an ecological revetment, and relates to the technical field of waterfront ecological engineering. The permeable filler comprises an ecological curing agent, the ecological curing agent comprises, by mass, 30%-45% of a biomass cementing material, 10%-20% of a water-absorbing polymer, 15%-25% of a microbial carrier, 5%-8% of a heavy metal stabilizer and the balance inert filler, and the ecological curing agent and dry soil are mixed and compacted according to the mass ratio of 1: 8-1: 12. The ecological curing agent is prepared from the biomass cementing material, the water-absorbing polymer, the microbial carrier, the heavy metal stabilizer and the balance of inert filler according to the mass fraction, suspended solids and heavy metals in rainwater are effectively reduced, the situation that first rain is polluted into a river is avoided, and material exchange between land and a water body ecological system is promoted; the ecological revetment can effectively improve the rainwater retention rate and the water storage period through a three-stage structure, reduce surface runoff and improve the rainwater resource utilization rate.

The invention discloses an ecological sensitive area water intake project zero-pollution construction process intelligent evaluation management method, and relates to the technical field of ecological project construction and intelligent construction, and the method comprises the following steps: constructing a layered space-time observation baseline, employing a multi-channel synchronous sampling mode of a deep layer, a shallow layer and a sedimentary layer, obtaining multi-layer ecological data, and carrying out the analysis of the multi-layer ecological data; generating a disturbance difference spectrum and a time lag matrix according to a sampling result, and establishing a unified analysis reference across the ecological depth and the time scale; and on the basis of the disturbance difference spectrum and the time lag matrix, executing cross-depth time lag deconvolution calculation, extracting an ecological disturbance reverse superposition fingerprint, and identifying a false recovery window with an abnormal dynamic balance feature in an ecological state. According to the method, a multi-channel sampling system is constructed, synchronous acquisition of multi-layer ecological data is realized, a false recovery window is identified through a disturbance difference spectrum and a time lag matrix, layered regulation and control are driven in combination with a causal calibration and closed-loop prediction mechanism, and accurate identification and dynamic and steady state maintenance of ecological disturbance are realized.

The invention discloses a farmland protection forest system space configuration method based on a Great Wall grain structure, and belongs to the technical field of agricultural ecological engineering. The method comprises the following steps: designing a unitized Great Wall grain-shaped grid as a forest network basic form; acquiring farmland and disaster characteristics of a target area, and determining the number of forest networks and great wall grain structure parameters according to a protection target; the Great Wall grain-shaped grids are arranged according to rules to form a forest network, and a final farmland protection forest system space configuration scheme is formed after optimization and adjustment. The system comprises a Great Wall pattern grid form design system, a forest network configuration and optimization module and a dynamic monitoring regulation and control system. By means of the innovative Great Wall grain-shaped grid structure, it is guaranteed that the farmland protection forest exerts protection benefits, meanwhile, the farmland protection forest is matched with a mechanical production means, the occupied area of the forest belt can be reduced, the land utilization efficiency is improved, and the ecological benefits, the production benefits and the regional coordination are achieved.

The invention relates to the technical field of regulation and management of urban water ecosystems, in particular to an urban river ecosystem reconstruction method and system based on tail water of a sewage treatment plant. The method comprises the following steps: introducing the tail water of a sewage treatment plant into a constructed wetland deep purification corridor parallel to or surrounding a river channel for purification, collecting the purified tail water quality, mixing the purified tail water quality in a water distribution hub, and implementing pulse type ecological water supplementation to the downstream of the river channel through a preset intelligent gate dam; the method comprises the following steps: acquiring initial topographic data of a smooth and hard river channel, determining habitat size parameters in combination with habitat conditions required by survival of aquatic organisms, and transforming the river channel topography to form a serialized habitat unit; the tail water type river channel ecological system which is rich in biological diversity and has self-cleaning capacity and self-maintaining capacity is reconstructed, so that the operation controllability and long-term stability of urban ecological engineering are improved.

The invention discloses a forest field road and canal integrated farmland protection forest network optimization design method based on multi-objective cooperation, and belongs to the technical field of farmland ecological engineering and protection forest planning and design. The method comprises the following steps: firstly, obtaining layout information of field roads, channels and ridges, and designing a plurality of candidate forest network layouts including an integrated scheme; forest belt parameters are obtained through a laser radar, and the windproof efficiency of each scheme is simulated and quantified through computational fluid mechanics; and furthermore, a multi-target evaluation system containing windproof, land-saving and production convenience indexes is constructed, and a collaborative optimization decision algorithm combining fuzzy analytic hierarchy process and approximate ideal solution sorting is adopted to perform objective and quantitative comprehensive sorting and optimization on candidate schemes.

The application provides a Rubia cordifolia-winter shed collaborative Macrobrachium rosenbergii ecological breeding method based on Xijiang water, and belongs to the technical field of aquatic health breeding and agricultural ecological engineering. The application initiatively constructs a space-time coupling breeding mode of "summer Rubia cordifolia and winter Macrobrachium rosenbergii", realizes the space-time cooperation of three core modules of Xijiang live water, Rubia cordifolia water purification and winter shed heat preservation staggered peak, realizes water quality stability, reduces the occurrence of diseases and staggered market, finally achieves the multiple goals of reducing breeding risk, improving product quality and economic benefit and protecting the ecological environment of Xijiang water, and provides an ecological and efficient breeding solution with regional characteristics and market competitiveness for the Macrobrachium rosenbergii industry.