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60 results about "Lake ecosystem" patented technology
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A lake ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions. Lake ecosystems are a prime example of lentic ecosystems. Lentic refers to stationary or relatively still water, from the Latin lentus, which means sluggish. Lentic waters range from ponds to lakes to wetlands, and much of this article applies to lentic ecosystems in general. Lentic ecosystems can be compared with lotic ecosystems, which involve flowing terrestrial waters such as rivers and streams. Together, these two fields form the more general study area of freshwater or aquatic ecology.
Sustainable Aquaponic System and Method Using Alternative Aquaculture Feed, Fingerling Production and Green Energy Sources
InactiveUS20130098303A1High reproductive rateImproves geneticsAgricultural fishingPisciculture and aquariaAquaponicsSystems design
A system and method of sustainable aquaponics that vertically integrates unique aquaponic system designs with alternative aquaculture fish feed sources, fingerling production methods, alternative aquaculture / farmed fish grow out models, and green energy sources that yield organic produce in the form of fruits and vegetables. A raceway system serves for grow-out throughout the warm and cold months. During the summer months, fish can be spawned and fed for steady growth, while during the winter months, the fish continue to grow at slower quite acceptable growth rates. The present invention derives its water from an open, natural, established pond or lake ecosystem to ensure that the raceways are adequately seeded with all of nature's good and bad bacteria and algae. The present invention can include winter quarters for the fish that is well-insulated and heated to ensure that the fish are comfortable and will continue growing and spawning throughout winter months.
Owner:JONES TRENT DR
Precise quantization method for nitrogen cycle of lake ecosystem
A precise quantization method for nitrogen cycle of a lake ecosystem includes 1), applying an isotope pairing method to quantitatively research nitrogen migration and conversion of a sediment-water interface of the lake ecosystem; 2), determining release of nitrogen of a water-gas interface by measuring N2O yield by the aid of a closed chamber-gas chromatograph method; 3), measuring biomass of aquatic plants and nitrogen content in bodies of the aquatic plants by the aid of a Dumas method and determining nitrogen absorbed quantity of the aquatic plants; 4), measuring biomass of microorganisms in the ecosystem by the aid of an MPN (most probable number) method, and measuring the effect of the microorganisms in a nitrogen conversion process and conversion quantity of the microorganisms to the nitrogen; and 5), applying the stable isotope technology to measure assimilation of aquatic animals to the nitrogen, and realizing precise quantization of the nitrogen, namely, measuring a food web of the aquatic animals and a trophic-level structure to determine migration and conversion of the nitrogen in the food web. Procedures of the precise quantization method are realized in the same simulation ecosystem.
Owner:NANJING UNIV
Health assessment method based on lake water ecosystem
InactiveCN106202960AObjective reflection of health statusData processing applicationsGeneral water supply conservationAquatic biotaLake ecosystem
The invention discloses a health assessment method based on a lake water ecosystem, pertaining to the technical field of environment protection. The method comprises following steps: firstly, investigating and analyzing lake water environment and lake water aquatic organism, and utilizing canonical correspondence to analyze and explore the relations between aquatic organism distribution and environment factors; further determining candidate indictors, determining assessment indictors, determining assessment indictor weight, establishing assumable indictor system, calculating health comprehensive indictors of the lake water ecosystem and assessing the health state of the lake water ecosystem. The health assessment indictor system of the lake water ecosystem is utilized for scientific assessment of the healthy condition of the lake water ecosystem and helps objectively reflect the environment of lake water and the health condition of aquatic communities.
Owner:SHENYANG ACAD OF ENVIRONMENTAL SCI
Lake ecological water need analysis technology based on function setting method
InactiveCN101650762AAvoid one-sidednessThe research method is simple and easyOpen water surveyHydraulic engineering apparatusWater resourcesLake ecosystem
The invention relates to an analysis technology in comprehensive consideration of fresh water input need of different ecological functions of lake ecological systems.. In the analysis technology, lakeecological water need functions are divided into an ecological function, an environment function and a production function, and further, lake ecological need water is divided into 9 types, includingevapotranspire water need quantity, leakage water need quantity, aquatic organism and habitat need water, lake out surface runoff need water, lake out subsurface runoff need water, energy production need water, self-purification need water, shipping need water and landscape recreation need water. The water resource function coefficient is determined according to the difference of a maximum principle and a lake management target, and the lake ecological water need quantity under multi-target requirement is determined finally, the requirements on lake ecological system production, life and ecological comprehensive water need are met, and the problem that the water need requirement for the integral ecological system is difficult to provide because of single original lake ecological need water computation target is solved.
Owner:BEIJING NORMAL UNIVERSITY
Substrate improving material for high-organic-matter bottom mud shallow lake and preparation method thereof, and repairing method
ActiveCN106006978AEasy to operateLow costSludge treatmentBiological water/sewage treatmentLake ecosystemOrganic matter
The invention discloses a substrate improving material for a high-organic-matter bottom mud shallow lake and a preparation method thereof, and a repairing method; the substrate improving material is composed of clay, kaolin, environmental-protection ceramic filter balls and calcium peroxide. The preparation method comprises the steps: 1) selecting the clay, kaolin, environmental-protection ceramic filter balls and calcium peroxide as raw materials; 2) placing the environmental-protection ceramic filter balls in dilute hydrochloric acid, soaking, washing with clear water to be neutral, and drying; and 3) mixing evenly the clay, the kaolin, calcium peroxide and the processed ceramic filter balls according to a certain proportion, to prepare the substrate improving material. The repairing method comprises the steps: A) bamboo sticks are arranged in a lake bottom substrate improved region; B) the substrate improving material is sprinkled to the bottom of the lake from the surface of the lake; and C) submerged plants are planted on the substrate improved region, and the submerged plants are managed and maintained. The method is easy to implement and simple to operate, effectively solves the problems that the submerged plants are difficult to fixedly plant and ecological restoration projects are difficult to implement in a soft-surface high-organic-matter bottom mud lake, and accelerates the recovery of a lake ecosystem.
Owner:INST OF AQUATIC LIFE ACAD SINICA
Method for restoring submerged plant communities by utilizing three-dimensional plant net
InactiveCN107055789AEasy plantingDoes not affect colonizationBiological treatment apparatusSustainable biological treatmentPropagulePlant roots
The invention provides a method for restoring submerged plant communities by utilizing a three-dimensional plant net. The method comprises the following steps: taking plants as raw materials, and weaving the three-dimensional plant net; and culturing submerged plants by utilizing the three-dimensional plant net, forming a submerged plant module, and optimizing the planting composition so as to restore the submerged plant communities in a damaged river-lake ecosystem. A submerged plant seed bank serves as a raw material, the propagule has high propagation efficiency under controllable conditions after the seeds germinate and grow to a certain length, the survival rate is higher than that of transplanting of submerged plants, and the field planting ratio of the plants is higher than that of direct dripping of the propagule. The method provided by the invention has the advantages that the raw materials are selected from aquatic plants, secondary pollution is avoided, the novel utilization pathway of the aquatic plants can be developed, and the condition that nitrogen and phosphorus loads in a water body are increased due to rot of the aquatic plants can be reduced; due to the three-dimensional plant net, the damage on the submerged plants is reduced by virtue of overall transplanting, the survival rate is improved, and planting of stonewort and other submerged plants which are slender and difficult to transplant can be facilitated; and moreover, the plant net has a certain net diameter, the plant root system can be in contact with bottom mud through meshed holes, and field planting of the plants is not influenced.
Owner:南京河海环境研究院有限公司
Device for growing big emerging plant on near water surface of deep water area of lake
InactiveCN101569273AGuaranteed efficient growthReduce weightSustainable biological treatmentReceptacle cultivationLake ecosystemStructure and function
The invention discloses a device for growing a big emerging plant on the near water surface of a deep water area of a lake. The device comprises a buoyancy wooden bucket, a pulling rope, an adjusting article and a fixing article, wherein the inside of the buoyancy wooden bucket is divided into an up-and-down two layer structure by a separating board, the lower layer is a buoyancy foam layer filled with foam plastics, and the upper layer is a mounting medium layer filled with porous stones; the lower part of the buoyancy wooden bucket is provided with a connecting piece; the pulling rope passes through the connecting piece and is movably connected with the buoyancy wooden bucket; and one end of the pulling rope is connected with the fixing article, while the other end is connected with the adjusting article. The device makes that the big emerging plant is grown in the deep water area of the lake possible, and better improves the structure and function of an ecological system of the lake. The device has the characteristics of strong operability, low construction cost, practicality, easy popularization and good application prospect, and can be used for ecological restoration of plants in the deep water area of the lake.
Owner:NANJING UNIV
Method for constructing ecological regulation and storage lake for urban rivers
InactiveCN109626766AEasy to controlImprove self-cleaning abilityWater treatment compoundsSpecific water treatment objectivesAgricultural pollutionPlant community
The invention discloses a method for constructing an ecological regulation and storage lake for urban rivers, wherein the ecological regulation and storage lake is mainly used for flood regulation andstorage of urban rivers and purification of river course water seriously polluted by resident living and agriculture. According to the main technical scheme, a regulation and storage lake composite water ecosystem is constructed, wherein the constructing method comprises six sub-projects, the six sub-technologies respectively comprises: basement improvement, submerged plant community construction, fish community construction, macrozoobenthos community construction, micro-ecological purification system construction and system optimization adjustment, wherein the submerged plant community as the primary producer is the core part of the water ecosystem; and at the late stage, the optimization adjustment measures are performed by monitoring and observing the system, such that the regulation and storage lake ecosystem is gradually converted into the stable and natural state, and finally the stable regulation and storage lake water ecosystem is formed so as to achieve the state comprising stable and diversified species community, clear water body and good landscape for a long time.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Analytical method for steady-state transition mutation of lake ecosystem
InactiveCN105354415ASuitable for quantitative analysisCalculation method is simpleSpecial data processing applicationsInformaticsLake ecosystemKey factors
The present invention relates to a method for discriminating steady-state transition of a lake ecosystem based on an Mann-Kendall method. According to the method provided by the present invention, concentration trend changes and mutation point analyses of ecosystem steady-state transition key factors (TN, TP anf Chla) in different periods are comprehensively considered, so as to finally determine lake ecosystem steady-state transition points and stage division. The method is simple and convenient, and the concentration change trends, mutation regions and mutation moments of the steady-state transition factors can be expressed clearly by means of a coordinate graph, so that the method is suitable for discriminating steady-state transition mutations of the lake ecosystem, and provides a reliable basis for lake ecosystem recovery treatment.
Owner:江西省水利科学研究院
Ecological method and application for controlling quantity of spirogyra biomass in lakes
InactiveCN104445628AReduce wasteAvoid chemical toxicityEnergy based wastewater treatmentBiological water/sewage treatmentTilapiaEconomic benefits
The invention discloses an ecological method and an application for controlling quantity of spirogyra biomass in lakes. The ecological method comprises the steps of: breading tilapias in lakes where submerged plants are grown; controlling the quantity of the tilapias to minimize influence of the tilapias on the submerged plants and effectively control spirogyra. The ecological method provided by the invention can prevent chemical toxicity brought by chemical method for controlling spirogyra and reduce manpower and property waste caused by manually catching sponge; and the harvested tilapias can bring a certain economic benefit; furthermore, the ecological method also can effectively control the quantity of pomacea canaliculata. As can be seen, the ecological method and application for controlling the quantity of the spirogyra biomass in lakes can be applied to maintaining the lake ecosystem, and is environment-friendly.
Owner:广州贝山水生态科技有限公司
Method for controlling lake plant siltation by white rot fungi
InactiveCN102659296AImprove applicabilitySolve environmental problemsBiological sludge treatmentDecompositionLake ecosystem
The invention aims at solving the problem of siltation promotion and accumulation of grass-type lake plant and provides grass restraining and siltation controlling technology and method which utilize microorganism in-situ remediation to speed up decomposition of bottom-mud plant residues. White rot fungicide is used for controlling siltation of lake plant and biological decomposition of lake bottom mud is sped up by lignin degradation. The method is used for controlling biofouling of lake aquatic plants by the means of microorganism, thereby having strong operability and wide application. The method avoids secondary pollution and has important effects on ecological restoration of lake ecosystem.
Owner:BEIJING NORMAL UNIVERSITY
Technology for monitoring carbon flux in grass-type lakes
InactiveCN102156107ACause secondary pollutionReduce manpowerTesting waterColor/spectral properties measurementsLake ecosystemMonitoring data
The invention aims at solving the problems of discontinuity and accuracy of carbon cycle monitoring data in grass-type lakes, and provides a technology and a method for improving the data acquisition. Li8100 is an advanced instrument for measuring data at test site and recording the data, but Li8100 can not be used for monitoring carbon flux of lakes by the restraints of conditions; in the invention, Li8100 can be used for monitoring the carbon flux in lakes by an improved static box; compared with the method of using the traditional static box / meteorological chromatography, the method provided by the invention greatly improves the continuity and accuracy of data, and is convenient for the data analysis in later stage. The technology provided by the invention uses the existing resources of China and obtains materials from local sources, so that the technology is simple and feasible, and has relatively strong operability and wide applicability; the implementation of the technology does not influence the original ecological functions of the lake ecosystem; and great significances for maintaining the ecology health of grass-type lakes in a long time are provided.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Method for restoring existing lake water ecosystem
ActiveCN105152345AImprove the living environmentControl the trend of continued deterioration of eutrophication levelsSustainable biological treatmentBiological water/sewage treatmentSelf purificationWater quality
The invention discloses a method for restoring an existing lake water ecosystem. According to the method, basic condition improvement (water level maintenance, water quality improvement and bottom mud improvement), a filamentous alga (spirogyra) preventing technology, a transitional zone flushing preventing technology system, a water inlet front reservoir treatment system, shallow water zone sinking and floating leaf vegetation planting, deep water zone sinking vegetation planting, food net chain rebuilding, a sediment-water interface biological system, a microbial film reinforcing system, a species diversity habitat system and an ecological water purification system long-acting management are included. Through the method, water pollution loads are effectively lowered, the water self-purification capacity is improved, water is clear and free of heterochrome and peculiar smells, and therefore the water is suitable for being touched by people.
Owner:绵阳市靓固建设工程有限公司
Technique for calculating lake level of historical period
InactiveCN101908104AHigh precisionSpecial data processing applicationsEnvironmental indexPrincipal component analysis
The invention discloses a technique for establishing a relationship among sporopollen, environmental index and lake level by using main component analysis, grey association and regressive mathematical methods based on sporopollen assemblage zones in lake sediments and typical physical and chemical indexes aiming at the problems of shortage and discontinuity of historical hydrological data of a lake. The technique can calculate the lake level of the historical period so as to learn species condition and hydrological condition of a lake ecosystem under low artificial interference and play an important role in maintaining the health of the modern lake ecosystem.
Owner:BEIJING NORMAL UNIVERSITY
Lake water ecological restoration system
InactiveCN109574432AGuaranteed visibilityPromote growth and reproductionWater treatment compoundsTreatment involving filtrationEutrophicationSludge
The invention belongs to the technical field of lake water treatment, and discloses a lake water ecological restoration system. Restoration steps implemented by the lake water ecological restoration system include S1, replacing silt; S2, replacing water sources; S3, restoring the water sources; S4, treating ecospheres of lakes. The lake water ecological restoration system has the advantages that the content of organic matters in the silt is regulated for a long time and can be reduced, the water sources are extracted, disinfected and sterilized, and accordingly the visibility of the water sources can be guaranteed; beneficial indigenous microorganisms can be activated, growth and reproduction of the beneficial indigenous microorganisms can be promoted, growth of harmful microorganisms canbe inhibited, accordingly, ecological systems of water bodies can be restored, and sludge in the water bodies can be effectively reduced; environments of the water bodies can be improved, the problemsof lake eutrophication, black-odor and the like can be solved, destruction on the ecospheres during establishment at preliminary stages can be reduced, and excellent protection effects can be realized; the alga-plankton-fish ecospheres of the lakes are set, accordingly, the restoration capacity of ecological systems of the lakes can be effectively improved, and the external destruction resistancecan be improved.
Owner:上海园林绿化建设有限公司
Device and method for repairing river and lake bottom sediments
ActiveCN110054378AReduce the impactEasy to operateWater resource protectionBiological sludge treatmentIn situ remediationSurface layer
The invention relates to the technical field of environmental engineering, in particular to a device and a method for repairing river and lake bottom sediments. The device for repairing the river andlake bottom sediments comprises a cover, a gas impact device, an aeration device, a gas supply device, corresponding gas pipelines, a sludge pump and a liquid pipeline. The gas supply device providesair sources to the gas impact device and the aeration device. An opening of the cover is arranged vertically downwards. The gas impact device and the aeration device are located in the cover. The gassupply device is located outside the cover, and provides gases to the gas impact device and the aeration device through the corresponding gas pipelines. The sludge pump is located outside the cover. Mud-water mixtures of the river and lake bottom sediments in the cover are drawn by the liquid pipeline for heterotopic treatment. The device and the method have the advantages that the in-situ remediation of the river and lake bottom sediments can be realized, restoration of habitat conditions of the river and lake bottom sediments is combined with restoration of aquatic plants, the restoration ofthe aquatic plants is promoted through change of redox conditions of bottom mud on a surface layer, and accordingly, a stable river and lake ecosystem is formed.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Lake-ecosystem catastrophe early-warning method
ActiveCN106846229ASolve the problem that the disturbance simulation experiment is difficult to apply to the actual lake environmentSolve problems that are difficult to adapt to real-world ecosystem disturbance factorsData processing applicationsMutation detectionInterference factor
The invention discloses a lake-ecosystem catastrophe early-warning method. According to the method, by the adoption of ecosystem mutation detection results, and time nodes can be obtained, wherein at the time nodes, lake-ecosystem energy quality mutates, and that is to say, catastrophes occur; in this way, ecosystem energy quality critical points are selected, in combination with a lake-ecosystem catastrophe early-warning model which is established on the basis of ecosystem total phosphorus, total nitrogen and energy-quality time sequences, the corresponding total phosphorus concentration and total nitrogen concentration are obtained through calculation and serve as early-warning threshold values of a Taihu ecosystem, and results of the method are more suitable for the actual lake environment. According to the method, the problem can be solved that it is difficult for a traditional disturbance modulation testing method based on a critical slowdown principle to adapt to actual ecosystem interference factors, and the method is a more accurate and more practical lake-ecosystem catastrophe early-warning method.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
A method for predicting and simulating total phosphorus cycling in shallow lake ecosystems
ActiveCN109255168ADesign optimisation/simulationResourcesEnvironmental stewardshipEnvironmental manager
The invention discloses a method for predicting and simulating the total phosphorus cycle of a shallow lake ecosystem. The method includes: A, constructing a phosphorus recycling model in water; B, constructing a phosphorus recycling model in the sediment; C, establishing a total phosphorus cycle model of shallow lake ecosystem. The method of the invention can scientifically evaluate the phosphorus pollution problem existing in the lake, and predict the environmental benefits, risks and uncertainties achieved by the use of different management methods, and use environmental conditions to makescenario simulations of the use of different management methods, so as to make predictions and provide scientific theoretical reference and guidance for environmental managers.
Owner:GUANGZHOU RESOURCE ENVIRONMENTAL PROTECTION TECH CO LTD +1
Regulation and stability maintenance method for shallow lake ecosystem
InactiveCN110845013AWater treatment parameter controlWater contaminantsEnvironmental resource managementAquatic biota
The invention relates to a regulation and stability maintenance method for a shallow lake ecosystem. The method comprises the following steps: (1) evaluation technology for the structure and the function of an ecological system: using an ecopath model to obtain key parameters of each functional group in the ecological system of a lake, to learn about different nutrition level distribution, function intensity of each nutrition level and biomass sizes of different functional groups in the lake ecological system, and to analyze and evaluate imbalance factors; (2) multi-nutrient-level biological manipulation technology: (2-1) combined effect of multiple organisms; and (2-2) ecological restoration evaluation; (3) vegetation recovery and wetland reconstruction technology in a shallow water area;(4) repeating the steps (1), (2) and (3); and (5) water quality-water quantity combined regulation: detecting the rainfall of an area where the lake is located, monitoring the reservoir capacity replacement of the lake, acquiring water area characteristics, nutrition imbalance conditions and aquatic organism community function group composition according to a hydrodynamic model, and periodicallydetecting and verifying the physicochemical indexes of a water body.
Owner:SHANGHAI OCEAN UNIV
Combined restoring method for eutrophic lake
ActiveCN104512986ARegular dischargeImprove self-cleaning abilityMultistage water/sewage treatmentAquatic ecosystemEutrophication
The invention relates to the technical field of ecological engineering and water treatment, and particularly discloses a combined restoring method for a eutrophic lake. The combined restoring method comprises the following steps: using a biological filter, a biologic nest, a flow generating system, a biologic membrane purification system, an aquatic ecosystem and an ecological floating island in a combined manner to treat the eutrophic lake water, providing necessary conditions for water body ecological restoration, constructing a healthy lake ecosystem, and improving the self-cleaning capacity of the lake water body, so as to achieve the targets of purifying the lake water body and restoring the aquatic ecology; when in the rainstorm process, a lot of sewage is discharged into the lake to cause impact pollution, or a lot of alga emerges in the lake, a bacterial purifying preparation can be sprayed to the lake, so that blue-green alga and green alga outburst can be effectively prevented or inhibited. The combined restoring method disclosed by the invention is free of secondary pollution, low in operating cost in the later period, good in restoration effect, and long-lasting in purifying effect, and can meet the large-scale engineering treatment requirements.
Owner:UNIVERSTAR SCI & TECH SHENZHEN
Method for evaluating shallow lake fishery environment by using microbial food web efficiency
The present invention discloses a method for evaluating a shallow lake fishery environment by using microbial food web efficiency. The method comprises that: S1, phytoplankton primary productivity, bacterial productivity and medium-sized zooplankton productivity in shallow lake are determined; S2, the shallow lake microbial food web efficiency FWEp is equal to medium-sized zooplankton productivity / (phytoplankton primary productivity + bacterial productivity); and S3, the shallow lake fishery environment is evaluated through the microbial food web efficiency FWEp, wherein the higher the microbial food web efficiency FWEp value, the better the shallow lake fishery environment quality. According to the present invention, the shallow lake fishery environment is subjected to the comprehensive evaluation so as to provide the basis for the scientific management of fishery and water environments and the rational development of lake ecosystems, and provide important guiding significance.
Owner:江苏省渔业技术推广中心
A combined restoration method for eutrophic lakes
ActiveCN104512986BImprove self-cleaning abilityPrevent or suppress outbreaksMultistage water/sewage treatmentAquatic ecosystemEutrophication
Owner:UNIVERSTAR SCI & TECH SHENZHEN
Wetland pre-pond eutrophication control method
PendingCN111072219APromotes natural buildPreventive nutritionWater contaminantsWater aerationEnvironmental resource managementEutrophication
The invention relates to a wetland pre-pond eutrophication control method which comprises the following steps: at the early stage of ecological system construction, biological bricks, a phosphorus locking agent and a circulating aeration device are applied to quickly improve the water quality and the substrate of a pre-pond; after the water ecosystem is rapidly restored, the plants are systematically planted in the pre-pond water, the bottom and the bank, after the clear water steady-state shallow lake ecosystem based on the submerged plants is gradually formed, rapid improvement measures aregradually reduced and even omitted, and the project is periodically maintained. With application of the control method, water-bottom-bank systematic habitat optimization can be conducted on the pre-pond, natural construction and gradual improvement of the clear water steady-state shallow lake ecosystem are promoted, and thus eutrophication of the pre-pond is prevented for a long time.
Owner:北京北控工业环境科技有限公司
Analysis method of bioavailable phosphorus in algae and aquatic plant
InactiveCN106290336AAccurate analysisQuick analysisMaterial analysis by observing effect on chemical indicatorPreparing sample for investigationLake ecosystemPyrophosphate
The invention relates to an analysis method of bioavailable phosphorus in algae and aquatic plant. The analysis method includes the steps that the concrete phosphorus components in the lake algae and aquatic plant are analyzed through liquid-state 31P-NMR technology and an enzyme hydrolysis method and compared, it is found that the phosphorus components detected by the two methods are similar, wherein it is detected through the liquid-state 31P-NMR technology that the algae and aquatic plant contain 15 or more kinds of phosphorus components, it is found through the enzyme hydrolysis method that phytate phosphorus and an active monoester phosphorus component are high in hydrolysis capacity and account for 50.2% and 43.5% of the total hydrolysable organophosphorus respectively; various enzymes are added for culture to research the bioavailable phosphorus in the lake algae and aquatic plant, it is found that most monoester phosphorus and pyrophosphate in the organic phosphorus of the lake algae and aquatic plant are hydrolyzed into orthophosphate capable of being used directly by biont to different extents, sufficient nutrient substances are provided for algae breakout once more, and when the outside environment conditions are suitable, algae will break out circularly, which brings huge hidden danger to a lake ecosystem and drinking safety of the human.
Owner:CHINESE RES ACAD OF ENVIRONMENTAL SCI
Restoration method of artificial lake ecosystem
PendingCN111675344AStrong self-purification abilityImprove purification effectWater cleaningSoil-shifting machines/dredgersAlgal speciesLake ecosystem
The invention discloses a restoration method of an artificial lake ecosystem. The restoration method comprises the following steps: 1, cleaning algae and sludge; 2, carrying out mud bottom improvementand activation; 3, planting submerged plants; and 4, throwing in algae-eating insects. The step 1 comprises the following steps that firstly, stirrers are arranged at multiple points of the lake surface, and stirring parts of the stirrers extend into the bottom of the lake for stirring till silt at the bottom of the lake rises and is mixed in lake water; then silt deposition net bags are settledto the bottom of the lake one by one, after 2-3 days, the silt deposition net bags are folded one by one, and the silt is accumulated to one side of the lake to be exposed to the sun; and sludge at the bottom of the lake is cleaned up. Sludge is stirred and mixed in water and then deposited into the sludge deposition nets and fished out, green algae on the lake surface are also stirred and scattered in the stirring process and fished ashore along with the sludge in the fishing process, water in the lake does not need to be drained completely, the sludge and the green algae are fished out at the same time, and manpower and material resources are saved.
Owner:广州市广绿园林绿化有限公司
Shallow lake ecosystem regulation and stability maintenance method
InactiveCN111252898APromote a virtuous circleRich food chainWater treatment parameter controlWater contaminantsAquatic biotaNutrition
Owner:SHANGHAI OCEAN UNIV
Compound ecological restoration method for lakeside zone of shallow lake
InactiveCN113371833AIncrease biodiversityImprove the ecological landscapeTreatment with aerobic and anaerobic processesHydraulic engineering apparatusAquatic ecosystemEnvironmental resource management
The invention discloses a compound ecological restoration method for a lakeside zone of a shallow lake, which takes pioneer submerged plant species, emergent aquatic plant species and submerged plants as cores, constructs an aquatic plant community, forms key factors for maintaining the structure and the function of an aquatic ecosystem, and combines ecological restoration technologies such as microorganisms, fishes, shellfishes and aquatic plants, on one hand, pollution indexes such as ammonia nitrogen and total phosphorus in the water body are deeply purified, and on the other hand, the balance of a lake ecosystem is kept. Meanwhile, the planted aquatic plants have good ornamental value, the ecological landscape of the lakeside zone is effectively improved, and the diversity of organisms such as birds, plants and aquatic organisms in the lakeside zone is recovered.
Owner:广西壮族自治区自然资源生态修复中心
Natural algistat and preparation method and application thereof
ActiveCN109793012AInhibition formationReduce governance costsBiocideAnimal repellantsLake ecosystemCrustacean
The invention provides a natural algistat and a preparation method and application thereof, and relates to the technical field of environmental protection. The natural algistat is prepared from, by mass, 10-50 parts of a crustacean extract, 30-70 parts of a houttuynia cordata extract and 10-50 parts of sodium alginate tech grade. The technical problem is relived that algae control through existingphysical means, chemical means and biological means cannot meet the requirements of algae control of lake ecosystems. The natural algistat has the advantages that through the synergistic effect of the crustacean extract, the houttuynia cordata extract and the sodium alginate tech grade, not only can the formation of water bloom be significantly inhibited, but also the raw materials are extractedand prepared from natural animals and plants as raw materials, so that the raw materials are cheap and easy to obtain, the natural algistat is nontoxic and harmless, secondary pollution cannot be caused, the cost of water bloom control can be effectively reduced, and the efficiency of water bloom control is improved.
Owner:MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
Method for establishing freshwater lake ecosystem
InactiveCN110745959AReduce pollution loadEfficient degradationWater/sewage treatment apparatusBiological sludge treatmentLake ecosystemWater quality
The invention discloses a method for establishing a freshwater lake ecosystem, and belongs to the technical field of freshwater environmental pollution control. The method for establishing the freshwater lake ecosystem comprises the following steps of water quality improvement, water level maintenance, land-water interface treatment, bottom mud improvement, food network chain establishment, waterquality monitoring and the like, and an algae inhibitor throwing device is also arranged. Conditions for restoring the water ecosystem are established through combination of physics, chemistry and biology, and nitrogen and phosphorus pollutants in water are effectively degraded and absorbed by match of warm and cold plants, so that pollution load of a water body can be effectively reduced, the water body is purified, and the water ecosystem is stabilized. Aquatic plants and aquatic animals are thrown to construct a reasonable food network chain, and a plurality of aquatic plants and aquatic animals can exert a synergistic effect, so that the effect is more obvious compared with the effect of singly planting aquatic plants or singly throwing aquatic animals, transparency of the water body is improved, nutrient salts are reduced, and construction and restore of the water body ecosystem are facilitated.
Owner:HUNAN UNIV OF ARTS & SCI
Method for improving ecological service functions of urban lakes
ActiveCN108793412AReduce negative impactGreat positive effectHops/wine cultivationTurf growingLake ecosystemPolyacrylamide
The invention provides a method for improving service functions of urban lake ecosystem landscapes. The method comprises the following steps of (1) spraying polyacrylamide into a target water body, sothat the concentration in the water body can reach 5 to 20mg / L; after two months, spraying entozole into the target water body for two to three times, wherein the dosage is 0.1 to 0.5g / m<2> each time; after one month, spraying sodium naphthyl acetate into the target water body for two to three times, wherein the dosage is 0.5 to 1g / m<2> each time. The method has the characteristics that accordingto the problem of submerged plant landscape in the urban lake water body, the height of the lake submerged plant is inhibited, and the root is strengthened, so as to reach the purposes of optimizingof submerged plant landscapes in the urban lake water body and stabilizing of colonies; the safety effect is realized, the cost is low, and the like.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY
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