38 results about "Food chain" patented technology

The invention belongs to the technical field of crop pollution prevention, and particularly relates to a rice heavy metal adsorption and isolation method based on iron agent regulation and control. According to the method, the iron agent is applied to the polluted rice field soil to induce the soil-rhizosphere interface to form an iron film, heavy metals (such as As, Cu, Pb and Cd) are fixed by virtue of adsorption and complexing effects of the iron agent, and migration of the heavy metals to rice roots is reduced, so that accumulation of the heavy metals at edible parts (leaves and ears) of the rice is reduced; the tolerance of the rice in a polluted environment is enhanced; and the risk of heavy metals in a food chain is reduced. Experiments show; through treatment of an iron film formed by a certain iron-based concentration, accumulation of the heavy metals in the rice leaves can be remarkably reduced, and the accumulation amount of the heavy metals in the rice leaves is far lower than the accumulation amount (1 / 40-1 / 120) of the heavy metals in rice roots. The invention provides an effective solution for farmland soil remediation and crop safety production.

The invention belongs to the technical field of sewage treatment, and discloses a DO-ORP coordinated regulation artificial tidal food web sludge in-situ reduction and phosphorus recovery method. Aiming at the problems of high energy consumption, serious phosphorus resource loss and the like of traditional sludge treatment, a multi-stage food chain consisting of microorganisms, protozoa and metazoan is implanted by constructing an artificial tidal environment with periodic alternation of wetting and drying; according to the method, the metabolic activity of sludge hydrolysis flora and phosphorus-accumulating bacteria is activated by utilizing cooperative regulation and control of DO concentration and ORP, microbial extracellular polymeric substances are triggered to be depolymerized by adopting tidal periodic oscillation, in-situ reduction of sludge biomass is realized by combining a food web cascade predation effect, and phosphorus is synchronously removed by virtue of an anaerobic phosphorus release-aerobic phosphorus uptake coupled struvite crystallization process. The method is suitable for treating the excess sludge of a municipal sewage treatment plant, and the high-purity magnesium ammonium phosphate fertilizer is produced while the dehydration energy consumption is reduced by 40%.

The present disclosure provides a biological control method for ciliate disease, and belongs to the technical field of biological control. The biological control method includes the following step: adding Chaenea vorax into an aquaculture pond to control the ciliate disease; and the Chaenea vorax includes Chaenea vorax PJ13002. According to the present disclosure, the Chaenea vorax PJ13002, a predatory protozoan, is introduced to recover a microbial food chain existing in nature in an aquaculture system and achieve biological control of the ciliate disease. Meanwhile, the Chaenea vorax PJ13002 can be directly ingested by aquaculture animals without causing diseases, so that a more stable aquaculture system can be formed, losses are avoided, costs are reduced, and economic benefits are increased. The method provides a new thought for controlling the ciliate disease and has an excellent popularization and application prospect.

The invention provides a biological bait culture method for pond culture water. The biological bait culture method comprises the following steps: S1, building a three-dimensional culture system; s2, preparing an ecological base and a biocenosis; according to the method, by building a three-dimensional cultivation system of the bottom layer modular net cage, the water surface floating type three-dimensional cultivation frame and the intelligent regulation and control system and combining scientific configuration of ecological bases and biocenosis, the problem that bait supply is unstable in traditional cultivation is effectively solved; the light organism cultivation unit, the plant planting unit and the biological membrane carrier unit of the water surface floating type three-dimensional cultivation frame work in a layered mode, bait organisms such as chlorella, copepods and rotifers in different water layers are cultivated in a directional mode, a complete closed-loop food chain is constructed in addition to food filtering and nutrition supplementing of snails and freshwater mussels, and the bait yield per unit water body is greatly increased.

The invention discloses an ecological system species evaluation method based on a food chain, and the method comprises the following steps: building an evaluation index system which takes the food chain nutrition level as a framework, and the evaluation index system comprises three first-level indexes: ecological function and nutrition level status, historical-current situation change amplitude and protection and management necessity; determining weights of the first-level indexes and subordinate second-level indexes; setting a judgment standard and an assignment rule for each secondary index; scoring the target species according to the assignment rule, and calculating a comprehensive evaluation score of the target species; and grading the target species according to the comprehensive evaluation score, and determining the target species as a key concerned species, a suggested concerned species or a general concerned species. According to the method, a multi-dimensional evaluation system taking a food chain as a core is constructed, so that the problems of one-sided view angle, disjunction of indexes and different standards in the prior art are solved, and scientific and accurate screening of ecological system species is realized.

The invention discloses a high-altitude mine restoration method and system, and the method comprises the following steps: site grading pretreatment: surveying and detecting a high-altitude mine wasteland, dividing the site into regions of different grades according to the ecological damage degree, and carrying out the differentiated engineering pretreatment on the regions of different grades; multi-dimensional biological habitat construction is conducted, and a multi-layer biological habitat structure composed of a surface layer, a shrub and grass layer, an arbor layer and a water source layer is built in the remediation site; and finally, dynamic monitoring and adaptive maintenance are conducted, wherein ecological parameters of the restoration site are periodically monitored. By constructing the multi-dimensional biological habitat, the limitation of heavy vegetation and light animals in the existing remediation technology is broken through, living space is provided for insects, birds and other organisms, the food chain and nutrient circulation of the ecological system are perfected, and the constructed ecological system has self-maintaining capacity and is not prone to secondary degradation.

This invention belongs to the field of heavy metal pollution remediation technology, and relates to the preparation and application of a cadmium passivating agent for weakly alkaline soil. The weakly alkaline soil cadmium passivating agent mainly comprises the following components by weight: 30-50 parts of a mineral complex, 40-60 parts of a bioactive component, and 5-15 parts of an auxiliary stabilizer. The mineral complex includes natural sepiolite, calcium-based bentonite, and a polyether-polyester diblock copolymer; the bioactive component includes microbial agents, phosphorus-modified biochar, lecithin, and phosphatidylserine; and the auxiliary stabilizer includes nano-hydroxyapatite and a chitosan-grafted polyaspartic acid complex. This weakly alkaline soil cadmium passivating agent exhibits excellent remediation effects on cadmium in contaminated soil, effectively preventing or reducing the entry of cadmium and other heavy metals into the food chain, and has significant market potential.

The present application relates to a layered multi-metal oxide-based magnetic biochar and a preparation method and use thereof, the preparation method comprising: S1, mixing biomass with an iron salt solution for impregnation, after solid-liquid separation, adjusting the first pH value of the solid phase material to obtain pretreated biomass; S2, pyrolyzing the pretreated biomass to obtain magnetic biochar, then mixing the magnetic biochar with a solution containing at least two metal salts and adjusting the second pH value, and then performing hydrothermal treatment to obtain the layered multi-metal oxide-based magnetic biochar. The obtained layered multi-metal oxide-based magnetic biochar has a large specific surface area, is magnetic, has a layered morphology, and has strong adsorption capacity, and can be applied to the treatment of water bodies containing arsenic and cadmium composite pollution, and can also be used for the passivation of arsenic and cadmium in farmland soil, reducing the health risk of food chain crops and ensuring food safety.

The application discloses an artificial ecosystem for improving wetland biodiversity and a construction method thereof, and the artificial ecosystem comprises a first-stage water system, a second-stage water-land system and a third-stage diversity ecosystem. The construction method of the artificial ecosystem is as follows: water area construction, enclosed water area construction; crop planting, block planting of crops in the water area; fishway construction, fish pool construction and seed pool construction, the seed pool is constructed near the water inlet of the water area; fruit forest construction, local flowering and fruiting trees are planted on the embankment around the water area; installation of insect luring lamps and release of aquatic organisms. The artificial ecosystem with high productivity and capable of recycling is constructed, a complete and stable food chain is constructed for the restored or built wetland, and the problem that the biodiversity of the restored or built wetland is difficult to improve and maintain after improvement is solved.

The application provides a kind of annual green manure interplanting method for tea garden soil improvement and fertilization, by interplanting summer green manure dichondra and winter green manure white clover in tea rows, combined with seamless interplanting and timely plowing technology, significantly improve the soil improvement effect and ecological regulation effect and the yield and quality of tea, through the synergy of two specific green manure variety combination, space-time configuration optimization and plowing management and other key links, not only fundamentally curb soil erosion, improve soil, fertilize soil fertility, reverse the trend of soil degradation, but also provide a stable habitat and food chain foundation for soil microorganisms, arthropods and other organisms, improve the biodiversity of tea garden, enhance the resistance to drought, cold and other adversity, promote the tea garden from a "soil consumption system" that relies on external input to a "fertile land and land system" that can self-nourish and recycle, which is of great significance to promote tea garden soil health management and promote green development of tea industry.

The present invention relates to "A process for the production of whitefish from Pátzcuaro (Chirostoma estor) and balanced diets for its growth and fattening." These diets have specific characteristics for this species, with a content of easily digestible protein ingredients that efficiently contribute to larval survival and the size and weight of the juveniles fed in aquaculture farms with the appropriate diet for each stage. These diets can enter the national and international markets due to their unique characteristics and the results obtained with stomachless fish. Additionally, these feeds can be used for the production of species at a lower level of the food chain, which do not require the use of fishmeal and fish oil, making the aquaculture of these species a more sustainable activity.These diets are the first developed specifically for the successful growth and fattening of the species C. estor, "Pátzcuaro whitefish", having the potential to impact its conservation and marketing in the region of geographic distribution.

The present invention comprises the deployment of a product known as RubisCO Climate Vaccine® or simply RCV which contains a specialised adapted culture of psychrophile algae and accelerators. This RCV is inoculated into targeted tropospheric clouds. The cumulatively large air-liquid optical interface area of clouds enables conditions for potential exponential photosynthetic algal growth and replication during which carbon dioxide is processed and oxygen released directly in the troposphere. Optimal inoculation sites are determined by altitude, humidity, temperature, weather patterns and predicted direction and duration of travel for precipitation, The biomass produced in this process is intended to be precipitated over mid-ocean where it is sequestered within natural ocean food chains or sedimented as detritus essentially permanently. This nature-based solution through repeated deployments offers a feasible scalable pathway toward potential climate change reversal within a decade with minimal or no adverse environmental impact.

A combined habitat platform for rapidly constructing a bird microhabitat is provided, and relates to the technical fields of wetland ecology repair technologies and wetland biodiversity restoration. The platform includes a plurality of habitat platform units with different immersion heights. Each of the habitat platform units includes several main body splicing units, buoyant units, and a vegetation layer paved on the main body splicing unit. According to the present disclosure, an enclosed platform formed by combining the buoyant units and the main body splicing units can not only load soil to support the vegetation layer as various plants planted for constructing the bird microhabitat, but also provide high-degree-of-freedom space for constructing a habitat and a foraging environment for wetland animals such as birds, so as to construct a stable ecosystem with integration on the water and under the water, a complete food chain, and abundant biodiversity, and provide a suitable habitat for wetland organisms such as birds, thereby effectively promoting restoration of integrity and stability of the wetland ecosystem.

The invention discloses a microhabitat reconstruction and energy flow regulation and control method for triplophysa orientalis population restoration, and belongs to the technical field of ecological restoration. Aiming at the problems of difficult propagation of natural populations of the triplophysa orientalis and food chain supply interruption caused by limited river habitat bearing capacity and non-uniform seasonal bait supply in an arid region, firstly, an anti-scouring proliferation unit embedded with local plant deadwood is laid in a shallow water slow flow region; constructing a'sheltering-ingestion 'double-effect microhabitat for enabling the oriental triplophysa to avoid natural enemies and to proliferate bait hooked shrimps; secondly, natural artificial proliferation of local wild hooked shrimps is simulated, and directional nutrition cascade regulation and control are implemented according to the energy requirements of three key life history stages, namely recovery after overwintering, gonad development and juvenile fish opening, of the triplophysa orientalis. According to the method, the problem that the survival rate of the triplophysa orientalis fries is low due to insufficient energy in traditional releasing is effectively solved, self-maintenance and propagation expanding of the triplophysa orientalis population are achieved, and then a stable food source guarantee is provided for the geranium wilfordii.

Systems, apparatuses, and methods that provide information relevant to trace a food or other product back to its source of production to protect the health of consumers during an outbreak of foodborne illness or to optimize supply chains for product freshness. Embodiments provide a way to better communicate traceability information to the final step of the present food chain (i.e., retail or foodservice outlet) than conventional approaches, which provide little, if any, capability to satisfy the requirements of the FDA and FSMA regulations.

The application discloses an ecological evolution simulation method based on rainfall runoff assimilation, and comprises the following steps: estimating environmental effects such as topographic erosion, water resource distribution change and light and heat resource change by using rainfall runoff assimilation results output by a rainfall runoff assimilation model; and calculating resource supply conditions and species distribution conditions of each layer of a food chain to simulate changes of a target environment ecological circle on the basis. The application simulates rainfall runoff processes by using the rainfall runoff assimilation model, adds short-term influences of rainfall runoff in ecological environment evolution simulation, improves granularity of the ecological evolution simulation method, and promotes ecological coupling rainfall runoff assimilation to be more accurate.

This invention relates to the field of electrical distribution cabinet technology, and provides a method, system, medium, and device for animal deterrence in electrical distribution cabinets. The method includes the following steps: acquiring image information of an animal located at a first preset distance; acquiring the animal's species information and pose information based on the image information; determining whether the animal is moving towards the electrical distribution cabinet based on the acquired pose information; if the animal is moving towards the cabinet, determining the animal's species information; the species information includes the number of species; if there are multiple species, determining whether a food chain relationship exists between the species; if a food chain relationship exists, using a corresponding deterrence method based on the food chain relationship. Using the method of this application, when there are multiple species, mutual deterrence between multiple species can be achieved by utilizing food chain relationships, improving deterrence efficiency.

The invention relates to a controllable underwater natural ecological cultivation method and system for groupers, macroalgae, meat blocks and mainly cultivated grouper fries are put into a fish house, lobsters, siganus and sparidae fishes for ecological control are continuously put into the fish house, a controllable natural ecological system is formed by relying on internal related facilities of the fish house, and after the controllable ecological system is stable, the groupers are cultivated in the fish house. A one-way food chain of the epinephelus can be formed, and the epinephelus performs ecological cultivation increasing by ingestion of natural bait entering the fish house ecological system; except for feeding artificial bait when an early ecological system is not stable, only an underwater automatic feeding device needs to be used for feeding a small amount of phagostimulant in the system every 3-5 days at ordinary times to attract external bait organisms to enter the system, artificial bait feeding is not needed, and the fish house is hoisted after about 250 days to collect and catch fish. A controllable fish house ecological system is utilized, one-way food chain ecology suitable for the groupers is formed, the whole cultivation period of the groupers can be monitored in the whole process, cost is low, and economic benefits are good.

This invention discloses an environmentally friendly and biodegradable liquor packaging box and its manufacturing method, relating to the field of liquor packaging technology. It aims to address the problem that existing non-environmentally friendly packaging boxes remain in the environment for extended periods, causing irreversible damage to natural landscapes and ecosystems, disrupting the food chain, and affecting ecological balance. The box, including a paper box, utilizes the weight of the liquor bottle placed inside to compress the base, thus supporting the box and reducing the probability of it tilting and falling when containing bottles. When the box is empty, the support is retractable, reducing storage volume and costs. Furthermore, the automatic retraction of the support and limiting piece allows for overall reuse. Made entirely of paper, it is easily degradable and recyclable, reducing resource waste and promoting a more environmentally friendly and sustainable industry.

The invention relates to the technical field of cotton variety screening and evaluation, and discloses a cadmium-tolerant cotton variety screening and evaluation method based on field planting, which comprises the following steps: S1, setting a test field; s2, field planting and management; s3, collecting and treating a key sample; s4, core evaluation index calculation; and S5, cadmium-tolerant type discrimination and variety classification. According to the cadmium-tolerant cotton variety screening and evaluating method based on field planting, variety planting is conducted in the actual cadmium pollution environment of a field, the problem that simulated environments such as potting and water planting are disjointed with real farmland conditions is effectively solved, and the reliability and practicability of a screening result are ensured. According to the method, the cadmium content of different organs of cotton is systematically analyzed, a core index of'cadmium seed cotton transport coefficient 'is introduced, and the migration ability of cadmium from a cotton plant vegetative body to an edible part, namely, cottonseed, with the highest food chain risk is accurately quantified, so that the screening work not only pays attention to the growth adaptability of varieties under cadmium stress, but also pays attention to the screening work of the varieties under food chain risk. And the agricultural product safety is used as a core evaluation standard.

The embodiment of the application discloses a kind of nuclear accident food chain consequence evaluation method, device, electronic equipment and storage medium;Method includes: determining evaluation area and the food chain transmission characteristics in evaluation area;According to the dose calculation model of nuclide transfer from crop to human body, food chain transmission characteristics are constructed;The region division processing is carried out to evaluation area, and first radioecological zone and secondary radioecological zone are obtained, and the corresponding ecological database is respectively constructed;According to the dose of nuclide in the evaluation area by the food intake route from the crop to the human body is obtained according to ecological database and calculation model.In the embodiment of the application, the agricultural ecological environment dynamic calculation accident consequence can be carried out when nuclear accident occurs.Therefore, the accuracy of nuclear accident food chain consequence evaluation can be improved by the scheme, to meet the needs of use.

The invention belongs to the technical field of sponge cities, and provides an ecological purification system for sponge city construction, which comprises a source decentralized control module for decentralized control of rainwater and sewage generation sources by implementing green measures; the multi-stage ecological purification module performs multi-stage purification on urban rainwater and sewage by using natural and ecological methods, and water quality detection points are arranged at different purification stages; the nutrition gradient utilization module is used for degrading pollutants in the wastewater into organic nutrients and carrying out gradient utilization according to a food chain relationship; the intelligent monitoring module monitors the water quality, the water quantity and the operation state of each module in real time; the emergency processing module is used for establishing a real-time alarm mechanism and informing management personnel in time; by simulating the natural water circulation process and combining the ideas of ecological priority and green development, in-situ permeation, storage, purification and utilization of rainwater are realized, so that the urban water problem is effectively relieved, and the sustainable development of cities is promoted.

The invention provides a bionic earthworm glue material as well as a preparation method and application thereof, and relates to the technical field of soil improvement materials. The bionic earthworm gelatin material comprises a gelatin-polyphenol complex, a three-dimensional network structure formed by sodium alginate and calcium ions, and nano montmorillonite, wherein the gelatin-polyphenol complex is mainly prepared from gelatin and tea polyphenol, and the bionic earthworm gelatin material has good dynamic self-repairing property, excellent water stability and heavy metal passivation capability by simulating earthworm body surface mucus components and structure synergistic bionics, and can realize rapid formation and stabilization of soil water-stable large aggregates; the bio-availability of heavy metal Cd in soil is reduced, Cd absorption of rice and migration of Cd to a food chain can be reduced, and the method has important significance on improvement of degraded soil and guarantee of quality safety of agricultural products. The invention further provides a preparation method of the bionic earthworm glue material, application of the bionic earthworm glue material in soil improvement and / or reduction of Cd absorption of rice and an application method.

The invention discloses a garden landscape wetland circulating system, and relates to the field of river pollution abatement, closed-loop food chain purification is formed through three-stage series purification pools of an ecological purification module, the three-stage series purification pools comprise first-stage suspended matter adsorption, second-stage ammonia nitrogen degradation and third-stage organic matter decomposition, and a dynamic flow dividing module is combined to automatically extend a water flow path and increase the aeration rate according to water quality; the box body module adopts a prestressed glass fiber reinforced plastic quick-release structure to adapt to the terrain height difference of 0.5-3 meters, the permeability is maintained by regular high-pressure washing of the backwashing module, and the nitrogen and phosphorus removal rate is stably improved through staged purification and dynamic shunting; meanwhile, the deployment period is shortened through the modular design, the maintenance interval is prolonged through pulse backwashing, the overall energy consumption is greatly reduced through solar driving, and the technical problems that a traditional wetland system is large in purification efficiency fluctuation and high in operation and maintenance cost are effectively solved.

The invention discloses application of baicalin to preparation of a marine antifouling composition. The marine antifouling composition is used for preventing adhesion of marine large fouling organisms. The baicalin disclosed by the invention is derived from dry roots of a traditional bulk traditional Chinese medicinal material scutellaria baicalensis, belongs to a pure natural plant extract, is completely free of heavy metals such as copper, tin and DDT or persistent organic pollutants when being used as a marine antifouling active component, has no accumulated toxicity to marine water, bottom mud and marine organisms, is quick and thorough in biodegradation, and is free of toxic and side effects. Ecological enrichment and food chain transmission risks caused by a traditional antifouling agent can be fundamentally eliminated, and the zero-pollution target of ocean antifouling is truly achieved.

The present application belongs to the field of sewage treatment and sludge reduction, and discloses a method for realizing sludge reduction and water purification by coupling biological membrane electrode with food chain. In view of the problems of poor reduction effect and incomplete water purification in traditional sludge treatment method, the present application adopts the method of coupling biological membrane electrode with food chain, adopts the strategy of constructing biological membrane electrode system and optimizing food chain structure, detects microbial community structure and water quality indexes in sludge, extracts microbial metabolic behavior on the biological membrane electrode and predatory behavior in the food chain, judges the characteristics of sludge reduction and water purification, and realizes the functions of sludge reduction and water purification in combination with sludge reduction rate and water quality threshold. Compared with the traditional technology, the present application can significantly improve the sludge reduction efficiency and water purification effect, has the characteristics of high treatment stability, and is especially suitable for practical application in the field of municipal and industrial sewage treatment.

The utility model belongs to the field of wetland ecological restoration, and discloses an artificial aquatic small organism inhabiting platform which comprises a buoyancy frame, the buoyancy frame comprises at least two connected buoyancy units, and the buoyancy units are connected with each other; the buoyancy unit comprises a buoyancy layer and a substrate layer for plant growth; three kinds of hygrophytes with different heights are planted on the substrate layer, and are matched with gravels and deadwood to build a multifunctional biological habitat; the device is easy to manufacture and reasonable in cost, solves the problems of atrophy of biological habitats and reduction of quality and diversity caused by hardening and homogenization of shorelines in artificial lakes, reservoirs and river channels, can quickly build high-quality and diversified biological habitats under the condition that the original shorelines are not transformed, meets the requirements of waterbirds, amphibians, fishes and benthonic animals, and has a wide application prospect. The reconstruction of a wetland food chain is facilitated, so that the biological diversity, the ecological system quality and the stability are effectively improved.

The invention relates to a method for building an offshore granary by using carbon dioxide to culture fishes and sealing and storing carbon dioxide, which is mainly realized through an artificial natural fishing ground and annular fish captivity equipment arranged in the artificial natural fishing ground. The method comprises the following steps of: inputting a nutrient source outside a euphotic layer to the euphotic layer through a transmission pipeline system by utilizing offshore wind power as an energy source; according to the invention, the growth of the seaweeds has an incremental nutrient source, so that the marine organisms of the whole food chain can eat well, more natural fishes can be produced, and more carbon dioxide can be consumed; an attachment inhabiting facility capable of forming marine organisms with a large surface area is designed, so that an enough attachment foundation is provided for incremental miniature algae for attachment life; inert dissolved organic carbon can be generated in the ecological process of marine organisms and can be sealed in seawater for more than 5000 years, and incremental'inert dissolved organic carbon 'can be generated in incremental growth of the marine organisms.

The application discloses application of Lactiplantibacillus plantarum in at least one of the following: a1, application in improving silage quality; a2, application in preparing silage; a3, application in preparing silage additive; the strain of the Lactiplantibacillus plantarum is named LB1, is preserved in the China General Microbiological Culture Collection Center, and the preservation number is CGMCC NO.33485. The Lactiplantibacillus plantarum isolated for the first time has high acid production and can reduce the content / abundance of sulfonamide antibiotic resistance genes, after adding the Lactiplantibacillus plantarum or a bacterial agent or silage additive thereof, the generation and residue of sulfonamide antibiotic resistance genes in feed can be reduced, the spread of sulfonamide antibiotic resistance genes in the food chain is reduced, the damage to animals, the environment and the human body is reduced, the forage safety is ensured, the animal health level is improved, and the drug resistance of human pathogenic bacteria is reduced.

The utility model relates to the field of degradable straws, and discloses a high-strength degradable straw which comprises a spiral belt-shaped body, the spiral position of the belt-shaped body is kept attached to form a complete tubular object, a spiral reinforcing rib is arranged on the inner side of the belt-shaped body, and the high-strength degradable straw is made of degradable materials. The plastic wastes such as polylactic acid (PLA), plant fibers and the like can be decomposed and converted into carbon dioxide and water by microorganisms in a short time under a natural environment or an industrial composting condition, so that the long-term accumulation of the plastic wastes in soil and water is greatly reduced, the damage of plastic pollution to the ecological environment is relieved from the source, and the habitat of wild animals and plants is effectively protected; and the risk that the plastic particles enter a food chain is reduced.