50 results about "Ecological stability" patented technology

The invention relates to special shrimp and crab feedstuff added with fermented bean dregs and fermented fish meal and a production method thereof. The invention is characterized in that the method comprises the following steps: adding BGB biological bacteria into the bean dregs for fermentation; carrying out drying treatment on the fermented bean dregs; then, mixing the dried bean dregs with fish meal, sub powder, corns and alpha starch; carrying out ultramicro pulverization; mixing the pulverized materials with fish oil, phospholipids oil, calcium biphosphate, wall broken yeast and multivitamin premix compound for obtaining mixed materials; and sufficiently stirring the mixed materials to be prepared into grain feedstuff. The invention is favorable for the digestive absorption of shrimps and crabs on protein, can improve the nutritive value of the feedstuff, can improve the nutritive quality of vegetable protein in the bean dregs, and is favorable for reducing the disease rate of the shrimps and the crabs and enhancing the cultivation ecological stability. Because of the addition of the wall broken yeast with the obvious food calling effect, the utilization rate of the feedstuff can be improved, and the invention is favorable for lowering the feedstuff factors. When being used for the shrimp and crab cultivation, the invention has the characteristics of fast growth, low cultivation cost, high cultivation yield and good economic benefits.

The invention discloses a technique for renewing and transforming low-function water conservation forest. The technique establishes a hierarchical structure model comprising a target layer, a strategy layer, a measure layer and a sub-measure layer by applying a analytic hierarchy process, structures judgment matrixes, and finally transforms the low-function water conservation forest into mixed forest which is clear in the levels of trees, shrubs and grass, various in species and thick in ground cover through calculation and adjustment. The technique can give full play to three main benefits of the forest, allows the forest to tend to have a stable healthy stand structure, can fully utilize natural laws and natural force to reduce blindness and meaningless funds consumption in forest management, guarantees the area constancy of the forest and continuous utilization principle, realizes biological diversity and ecological stability, and obtains high economic benefit and obvious ecological benefit.

The invention discloses a construction method of near natural mangrove forests at reef shallows. Three layers of cofferdams sequentially including a first cofferdam, a second cofferdam and a third cofferdam are arranged, wherein the first cofferdam is formed through piling of hollow wave resistant blocks, and mangrove plants are planted; a pioneer protection layer is between the first cofferdam and the second cofferdam, a near natural recovery layer is between the second cofferdam and the third cofferdam, and local mangrove forest plants are planted; and a seedling supply layer is in the thirdcofferdam. According to the construction method of near natural mangrove forests at reef shallows, the pioneer protection layer is arranged outside, so that the effects of preventing wind and preventing waves can be achieved, destruction of the wind and the waves to the near natural recovery layer is decreased, and planting of the local mangrove forest plants in the near natural recovery layer isfacilitated; mangrove plantlets are cultivated in the seedling supply layer, and seedlings can be voluntarily and continuously supplied to the near natural recovery layer, so that long distance purchase and transportation of seedling sources can be avoided, and the production cost can be reduced; and three layers are divided, so that ecological stability and species diversity of mangrove forest communities are increased. The construction method disclosed by the invention is used for the field of mangrove forest planting.

The invention relates to a vegetation system for slope ecological restoration. The system comprises: a water storage tank buried in an inclined section of a slope soil body; and a plurality of planting bodies which are uniformly distributed in the soil body above the water storage tank along the inclined section of the side slope soil body. The planting bodies comprise: planting grooves which aremade of concrete, wherein the lower parts of the planting grooves are buried in the soil body, and the bottoms of the planting grooves are communicated with the water storage tank through pipelines; apermeable soil retaining layer which is arranged at a pipeline inlet in the bottom of each planting groove and used for preventing seeds in the sandy soil from running off; a mesh bag which is formedby weaving rhizomes of perishable plants, is arranged in the planting groove and is used for filling the soil body; and an irrigation structure, wherein an inlet of the irrigation structure is formedin the water storage tank, and an outlet of the irrigation structure is formed above the implant and used for supplying water to the planting grooves. According to the device, plants planted on the side slope are irrigated during drought, rainwater is collected and stored when the rainwater is too much, the whole system forms a complete cycle, and therefore ecological restoration of the side slope is further assisted, and ecological stability of the side slope is guaranteed.

The invention discloses a method for purifying an eutrophic water body by using aquatic animals, plants and microorganisms; aquatic plankton is cultivated beforehand, and the following steps are carried out: a predetermined number of the cultivated aquatic plankton is put in a target water domain; the water body is kept in a transparent state as the aquatic plankton eat blue-green algae in the target water domain and restrain the regrowth of the blue-green algae; submerged plants in the target water domain are recovered to keep the water body in a stable clear state; engonus aquatic animals are poured in the target water domain to reinforce the water body biology diversity; and the ecologic stability of the water body at present is maintained. In the method for purifying the eutrophic water body by using the aquatic animals, plants and microorganisms, the ecologic method is used for forming an excellent water ecosystem to recover the service functions of the original ecosystem.

The invention relates to the technical field of data processing systems or methods specially suitable for administrative, commercial, financial, management, supervision or prediction purposes, and provides a cultivated land ecological sustainability evaluation method and system. The method is used for evaluating county-level cultivated land ecological sustainability in southern red soil hilly regions. The method comprises the following steps: according to a cultivated land ecological current situation of a research region, selecting indexes from four aspects of mine damage, landscape pattern, ecological stability, and ecological space occupation, and constructing a cultivated land ecological sustainability evaluation index system; combining subjective and objective factors, and combining an analytic hierarchy process and an entropy evaluation method based on a Lagrange multiplier method to determine index weights, wherein the cultivated land ecological sustainability evaluation index system comprises a plurality of cultivated land ecological influence factors, and each cultivated land ecological influence factor comprises a plurality of cultivated land ecological sustainability evaluation indexes; according to index values of the cultivated land ecological influence factors and a cultivated land ecological sustainability level, evaluating the cultivated land ecological sustainability.

The invention relates to a lactic-acid-bacterium liquid fertilizer and an application method for saline-alkali soil improvement, belonging to the technical fields of liquid organic fertilizer preparation and saline-alkali soil improvement. The lactic-acid-bacterium liquid fertilizer is composed of the following raw materials by weight: 1 to 10 parts of edible white granulated sugar, 1 to 50 parts of edible brown sugar, 1 to 10 parts of soybean powder, 1 to 3 parts of xanthan gum, 1 to 5 parts of denaturated starch, 1 to 2 parts of sucrose ester, 0.01 to 0.03 part of high-temperature alpha-starch liquefaction enzyme, 0.001 to 0.003 part of sodium pyrophosphate and 0.01 to 0.05 part of potassium hydrogen phosphate. The lactic-acid-bacterium liquid fertilizer is prepared by mixing the above materials and then adding 73 to 95 parts of purified water, 0.01 to 0.02 part of Lactobacillus bulgaricus and 0.01 to 0.02 part of Streptococcus thermophilus. The organic fertilizer prepared with the method provided by the invention has the advantages of definite selected strains, micro-ecological stability and high-content of effective live bacteria, obvious application effect of bacterial metabolites, simple production process, low comprehensive cost, and a wide application range.

A porous soil block is provided to improve moldability, to prevent the separation of materials using enough mixing water and to secure excellent porosity and high strength by preventing a soil binder from falling in vibrating compaction. CONSTITUTION: A porous soil block includes aggregates, a soil binder, and superficial porous natural fiber. The soil binder includes soil, blast furnace slag fine powder, and blast furnace slag cement. The soil binder includes 38-52 weight% of the blast slag cement, 30-40 weight% of the blast slag fine powder, 8-26 weight% of the soil, and 4-8 weight% of anhydrous gypsum. The soil includes clay, loess, sandy soil, or kaolin.

The invention discloses a method for biologically purifying an eutrophic water body. The method particularly comprises the following steps: independently culturing a microbial flocculant, a compound enzyme preparation, and a compound microbial preparation by use of a fermentation tank culture medium; mixing the microbial flocculant, the compound enzyme preparation and the compound microbial flocculant in proportion to obtain a microbe, then adding water with 10 times of weight, uniformly mixing, and restoring the water body into a transparent state by adding a predetermined quantity of microbes to every ton of a target water area; restoring a submerged plant in the target water area to keep the water body in a stable and clear state; and adding an aquatic animal to the target water area to enhance the biological diversity of the water body and keep the ecological stability of the current water body. The method disclosed by the invention can be used for thoroughly improving the water quality and restoring the ecological balance of the water body by forming a multi-stage effect through the combined action of the microbe with a synergistic function, the submerged plant and the aquatic animal and has the advantages of easiness for operation, low cost, no biological side effect and no secondary pollution generation.

The present invention is that suitable bryophytes are selected and cultivated as the seedlings for ecological restoration and afforestation on naked stonewall; suitable bryophytes are selected and cultivated as the seedlings and the naked stonewall is covered with planning groundmass which can be solidified; the bryophytes seedlings are planted on the groundmass with short-term maintenance to form wall-carpet type afforestation sight with excellent ecological stability.

The invention discloses a diversion tunnel structure capable of overhauling lock chamber sections of tunnels, and belongs to the field of hydraulic engineering. The diversion tunnel structure comprises a diversion tunnel body and an overhaul water conveying tunnel, wherein the upstream section of the diversion tunnel body is an overhauled tunnel in which a lock chamber structure is arranged; the entrance of the overhaul water conveying tunnel is connected with the upstream watercourse; the exit of the overhaul water conveying tunnel is connected with the diversion tunnel body and the connection position is located at the downstream of the lock chamber structure; an overhaul lock chamber is arranged at the tunnel body section of the overhaul water conveying tunnel; and the overhaul lock chamber is provided with a gate. According to the diversion tunnel structure, the overhaul water conveying tunnel is arranged beside the diversion tunnel body, and the overhaul water conveying tunnel is utilized to overhaul the lock chamber of the diversion tunnel during the water supply period so that the smooth locking of the gate of the diversion tunnel and the power generation benefit are ensured; and meanwhile, after the overhauled diversion tunnel is locked, the ecological flow of the watercourse can be discharged downstream through the overhaul water conveying tunnel, so as to ensure the downstream ecological stability.

The invention provides an improved bioassay method for an antagonistic bacterium, namely a double-layer culture medium filter paper sandwich method, which belongs to the technical field of a bioassay method for a strain to be tested which is required to be adopted for biological pesticide development. The antibacterial activity of the antagonistic bacterium on plant pathogenic fungi is determined through the simple and easy procedures of manufacture of a sterile filter paper sheet die, manufacture of an upper culture medium and a lower culture medium, shift-in and shift-out of the sterile filter paper die, culture of the antagonistic bacterium to be tested and the target pathogenic fungi, measurement of experimental results and so on, and the antagonistic bacterium with application value can be reasonable screened out. The simple, convenient and quick novel method for implementing bioassay of the antagonistic bacterium has technological innovation. The method can truly reflect the antibacterial ability of metabolites of the strain, has the advantages of good test stability, good repeatability, cheap materials, simple and convenient operation, short experimental period and so on, can realize large-scale determination of a plurality of antagonistic bacteria on a plurality of the pathogenic fungi, and has good function on research of the biological and ecological stability of the antagonistic bacteria.

The invention relates to a method for raising chickens under a Robinia pseudoacacia forest, comprising the following steps: step one, selecting a forest, specifically selecting a Robinia pseudoacaciaforest with large plant and row spacings; step two, constructing an auxiliary facility; step three, preparing the land under the forest; step four, sowing pasture; step five, managing the pasture, specifically conducting topdressing every other month after sowing, spraying 3-5 Kg/mu of a compound fertilizer continuously for 3 to 5 times; and step six, grazing chicks. The method of the invention satisfies the herbage demand of the chickens by planting the pasture under the forest, prevents the land from being exposed, maintains ecological stability, constructs a benign ecological cycle, and isconducive to promoting the sustainable development of the forestry. The chickens cultivated by the method of the invention are freely bred and managed in the whole process, the food is rich in variety, the exercise amount of the chickens is large, natural-ingredient feed is fed, and the chicken meat is fine and elastic, and fresh and delicious in flavor.

The invention discloses a method for helping Pelteobagrus fulvidraco fry quickly pass a sensitive period to effectively increase the survival rate, and belongs to the aquaculture field. The culture management method includes the steps: 1) making pond preparation and planting Conyza canadensis; 2) dropping the fry into the pond and taming; and 3) maintaining the ecological stability of the pond. The method for helping Pelteobagrus fulvidraco fry quickly pass the sensitive period to effectively increase the survival rate has the following advantages and positive effects: (1) attracting the fry to float on the surface of the water body for ingestion by means of the sufficient bait in the stem area of Conyza canadensis at the surface of the water body so as to help the fry pass the sensitive period quickly and effectively improve the survival rate of the fry; (2) effectively avoiding the disease risk caused by change of feeding habits of the fry to eat the bait at the bottom of the pond; (3) improving the immunity of the fry and enhancing the resistance of the fry to the disease; (4) being simple and clear in the operation method, being easy to obtain the materials, and having the prospect of demonstration and easy promotion; and (5) being an environment-friendly technology development, having a good safety record and having no potential environmental risks.

The invention provides a herbaceous vegetation regreening method. The herbaceous vegetation regreening method comprises the steps that S1, selecting local suitable herbaceous plants for sowing; S2, covering the sowing area with a non-woven fabric; and S3, determining the length of the growing season of the local suitable herbaceous plants, removing the covered non-woven fabric at 2/5-2/3 of the growing season of the suitable herbaceous plants, and irrigating the planted suitable herbaceous plants 1-5 days before the covered non-woven fabric is removed. The non-woven fabric covering the suitable herbaceous plants is removed at 2/5-2/3 of the growing season of the suitable herbaceous plants, so that better photosynthesis conditions can be provided for the whole-cycle growth of the regreening plants in the first year, the growth of the plants (especially the growth of underground root systems) can be promoted, the biomass and self stress resistance of the regreening plants can be improved, so that the survival rate is increased, and the ecological stability is enhanced.

The invention discloses a coastal riverway ecological restoration system, and particularly relates to the field of riverway ecological restoration, the coastal riverway ecological restoration system comprises a support and a sand stirring device, the sand stirring device comprises at least one sand excavating part and a driving assembly driving the sand excavating part to rotate, and the sand excavating part comprises a swing rod and a sand excavating rod; and one end of the sand digging rod is fixedly connected with the oscillating rod. According to the coastal riverway ecological restoration system, sand accumulated on a riverbed is conveniently stirred through the sand digging rod, the sand is raised and flows along with river water, accumulation of the sand on the riverbed is reduced, then the influence of the sand on the riverbed height is reduced, the service life of the riverway is prolonged, meanwhile, damage of sand accumulation to the riverway ecology is reduced, and the riverway ecological restoration effect is improved. The ecological stability of the riverway is improved.

The invention provides a water body ecological balance remediation method, which relates to the technical field of ecological restoration. The repair method includes: 1) transformation of the substrate: discharging the water body, and disinfecting and sun-curing the bottom mud; 2) construction of a microbial colony: introducing new water, and adding one or more of microbial agents, complex enzymes, microbial nutrients to the new water; 3) planting of aquatic plants: planting aquatic plants into the water; 4) release of aquatic animals: releasing aquatic animals into the water. The repair method can fundamentally improve the water environment and construct an integrated water ecological balance circle of decomposers, producers and consumers. The water body after repair has high transparencyand can maintain ecological stability for a long time.

The invention relates to the field of purified water production devices, in particular to a purified water production device and a production method. The purified water production device and the production method aim to solve the problems that in the prior art, the purified water production device is high in cost, short in service life of a filter material, instable in produced water quality and low in produced water purity. Along a product processing sequence, the purified water production device sequentially comprises a raw material water buffering device, a pretreating and filtering device,a multi-stage reverse osmosis type EDI purified water device and a terminal water device, wherein the multi-stage reverse osmosis device comprises a first-stage reverse osmosis part, a first-stage water producing tank, a second-stage reverse osmosis part, a second-stage water producing tank, an EDI purified water part, and a water producing loop sequentially connected with the reverse osmosis part, the first-stage water producing tank, the second-stage reverse osmosis part, the second-stage water producing tank and the EDI purified water so as to be flown out. The purified water production device also comprises a control device for controlling on and off of a passageway between the multi-stage reverse osmosis device and the terminal water device. The purified water production device and the production method have the advantages that the recovery rate of the whole water producing device is higher, the water resource saving and utilizing rate is higher, and the production cost is lower;meanwhile, the produced water quality is more stable, and the purity is higher; the whole filtering system is better in ecological stability, and a filtering material of the filtering system is longer in service life and more energy-saving.

The invention discloses an open-pit mining ecological loss reduction method. The method comprises the following steps that S10, geological layer information, soil information and ecological information of a mining area are acquired; S20, according to the early-stage planning and technology, the stripped surface soil and the rock-soil layer are subjected to mining, drainage and classified storage, and land occupation is reduced; stratum reconstruction is realized through logistics transportation and allocation, so that the reconstructed water-bearing stratum and the water-resisting stratum are close to the original stratum in property and are effectively connected with the surrounding original horizon; S30, when the pit of a strip mine is closed, residual discharged rock soil is discharged into the pit, and an artificial reservoir is built depending on the terrain; and S40, after the pit of the strip mine is closed, the landform and vegetation of the mining area are restored, and water storage irrigation devices are built cooperatively to improve the ecological stability of the area.

The invention relates to an inoculation mud inoculation method for rapidly enriching nitrous acid type denitrification anaerobic methane oxidation microorganisms. The inoculation mud inoculation method comprises: (1) mixing anaerobic sludge having different conditions according to a certain ratio, and pre-treating to obtain the inoculation sludge of an enrichment system; and (2) inoculating the mixed sludge obtained in the step (1) into an airlift type continuous batch reactor, adding a nitrogen source, methane, trace elements and other liquid culture mediums during culture, and enriching denitrification anaerobic methane oxidation microorganisms within a short time. According to the present invention, the inoculation mud obtained by mixing according to a certain ratio is used to enrich, such that the microbial ecological stability during the enriching can be improved and the denitrification anaerobic methane oxidation microorganism enriching time can be substantially shortened compared to the single inoculation mud.

The invention discloses a stair type ecological landscape slope. The stair type ecological landscape slope comprises a stone retaining wall (1) located on one side of a river, wherein the upper end ofthe stone retaining wall (1) extends to the position above the river and is connected with slope protection stairs (2); the stone retaining wall (1) comprises a plurality of timber piles (3) distributed at intervals, and stone groups formed by multiple horizontally laying stones are arranged between the adjacent timber piles (3); the slope protection stairs (2) comprise multiple horizontal slopeprotection platforms (4) distributed in a stair manner, sludge fired bricks (5) are laid on the slope protection platforms (4) at intervals, and aquatic plants (6) are planted at the intervals of theadjacent sludge fired bricks (5). The stair type ecological landscape slope has the characteristics of high flood control capacity, high ecological stability, good landscape effect and good interaction.

The invention relates to a river ecological control method and system. The river ecological control method comprises the steps that: fish survival amount data of operation periods and leisure periodsover the years in a fishing water area and fishing boat number data in the operation periods are obtained; fish survival amount data corresponding to the end time of the operation period each year andfish survival amount data corresponding to the end time of the leisure period each year are recorded; the years of the continuous reduction of the fish survival amount data at the end time of the operation periods and the end time of the leisure periods over the years are registered; and the number of fishing boats operating in the fishing water area is controlled when the registered continuous reduction years reaches a continuous reduction year threshold. With method adopted, the survival amount of fishes in the river is controlled in real time, and the ecological stability is improved.