451results about How to "Increase biodiversity" patented technology

The invention relates to an ecological restoration method for lakeshores, in particular to an ecological restoration method for the lakeshore of shallow lakes, which comprises the following steps: a. selection of a region: a region with water eutrophication, rich nutrient salts in lake sediment and serious water pollution is selected as a restoration region; b. setting of wave-resistant layer; c. setting of wave-absorbing layer; and d. seasonal ecological restoration. The submerged plants of the ecological restoration method alternate seasonally and each season has pioneering varieties which can improve and stabilize the water environment; a finely divided aquatic plant community is formed by the combination of emerging plant community, floating plant community, floating leaf plant community and submerged plant community; ecological restoration synthesis technique measures such as microorganism, fish, seashell, aquatic plant and the like are adopted and no secondary pollution is generated; and the ecological restoration method is characterized by short cycle, low investment, remarkable treatment effect and obvious social effect, ecological effect and economic effect.

The invention relates to a carbon fiber wetland type ecological floating bed and an arrangement method thereof, belonging to the field of sewage treatment. The carbon fiber wetland type ecological floating bed comprises a bed body, a biological carbon fiber material, floating bed plants and a wetland tank, wherein the wetland tank is arranged in the bed body; the interior of the wetland tank is filled with a porous light-weight artificial wetland filler; the floating bed plants are planted in the middle of the filler; and the biological carbon fiber material is hung on a suspension rod at the bottom of the wetland tank. According to the carbon fiber wetland type ecological floating bed, the processes of the ecological floating bed, bio-contact oxidation and the artificial wetland are reasonably combined to ensure that sewage is firstly subjected to bio-contact oxidation to degrade most pollutants, then the sewage is intercepted and further degraded through the wetland structure, and finally, through the absorption effect of plant roots, the quality of the sewage is better improve; and meanwhile, the reasonable layout of plants can be used for achieving the purposes of beautifying the environment, improving the ecological diversity and promoting the degradation effect on the pollutants of the whole floating bed system.

The invention provides a river bank ecological restoration device and method suitable for mountain river characteristics. The device comprises ladder stone cages and a backfilling soil layer or ecological bags, wherein the ladder stone cages are arranged on the river bank slope, and the backfilling soil layer or the ecological bags are arranged in a gap between the ladder stone cages and a river bank. Grass seeds are spray-sown to form a grass seed layer after slurry is poured into the ladder stone cages; a rubble base layer is arranged at the bottoms of the ladder stone cages; riprap bankets are laid at the outer sides of the bottoms of the ladder stone cages; herbaceous plants are sown on the ecological bags; and herbaceous plants, shrubs and arbors are planted on the river bank at the upper portions of the ladder stone cages. According to the river bank ecological restoration device and method suitable for the mountain river characteristics, the cost is low, the operation is easy and convenient, and actions of stabilizing the river bank and providing a porous habitat for microorganisms and aquatic organisms are achieved; and the riparian zone environment suitable for the plants to grow is built to restore phytocenosis so as to intercept and absorb nonpoint source pollution loads coming from peripheral housing estates and farms, and therefore an action of protecting river water quality is achieved.

The invention pertains to the technical field of environment protection, which provides a method for treating black-odor rivers and lakes with microbiological preparations and comprises the following steps of: (1) pre-treatment of the rivers or the lakes; (2) biofilm colonization treatment; (3) microorganism augmentation treatment by direct application; (4) water ecology recovery and oxidation reduction of reductive sludge at the bottom; and (5) protection and further improvement of water environment. The method for treating black-odor rivers and lakes with microbiological preparations employs a plurality of microbiological preparations to treat the black-odor rivers and lakes, realizes the decomposition of organic pollutants in the water body, improves water ecological balance, and oxidizes, and reduces the reductive sludge at the bottoms of the rivers and lakes.

The invention relates to a method for building a local mangrove forest on an intertidal zone unsuitable for forestation, belonging to the technical field of forestation on the intertidal zone. The method comprises the steps of: planting a Sonneratia apetala forest on the intertidal zone unsuitable for forestation; after the Sonneratia apetala forest is planted for 2-3 years, eliminating all Sonneratia apetalas ; and re-planting the local mangrove forest on the intertidal zone after the Sonneratia apetalas are eliminated. The mangrove forest is built on the intertidal zone unsuitable for forestation by applying the method provided by the invention, which can not cause interference on a coast wet land environment, but also avoids the ecological invasion risk; and the mangrove forest has a high survival rate.

The invention discloses an ecological fish farming method in a rice field, which comprises the following steps of rice field preparation, rice field transformation, fish farming facility preparation, rice seedling transplantation, biosorption, rice field disinfection, irrigation, fertilization, stocking fish seed selection, stocking fish fry disinfection, stocking and feeding management, wherein annular field fish ditches dug through the rice field transformation are V-shaped ditches arranged on the inner sides of ridges around the rice field; the biosorption utilizes a biosorption agent to adsorb heavy metal in rice field soil and irrigation water; and stocking fish seeds are selected from eight-beard catfishes. The invention further discloses rice produced by rice plants planted in the rice field using the ecological fish farming method. According to the method and the rice, an effective usable area of the rice field is increased significantly; pollution of the heavy metal such as lead and cadmium is reduced; integral benefits of fish farming in the rice field are improved; the ecological rice contains rich protein, more microelements such as iron, magnesium and calcium, and vitamin C, has no chemical pesticide residual, and is green and environment-friendly; and the content of the heavy metal such as lead and cadmium is very low.

The invention relates to a feeding bait and process for colonially feeding Orius sauteries, the bait is made through a mode that flour mites are inoculated on a vegetal mixed base and is cultured and propagated, the environmental conditions of the inoculation, the cultivation and the propagation are that the relative humidity is 65-75 percent, the temperature is 24-26 DEG C, and the bait is cultured under the above environmental conditions for 15-25 days. The feeding method comprises hatch, the raising of nymphs, and the transfer of last instar nymphs or imagoes, the environmental conditions of feeding are that the temperature is 17.5-27.5 DEG C, the relative humidity is 60-90 percent, the photoperiodicity of the nymphs is 14-16 Liter : 10-8 days, during the stage of feeding the nymphs, the Orius sauteries are fed for 9-20 days by using the bait, and the quantity supplied of the bait of each Orius sauteri is 0.2-0.5 gram. Using the invention to cultivate the sauteries, the period of the growing development is short, the livability is high, the operation is simple, the practicability is strong, and the production cost is low. The spread and exploitation of the invention is beneficial to the non-polluted prevention of pests and the food safety.

The invention relates to a bypass offline river purifying method and a bypass offline river purifying system. According to the invention, a branch of a polluted river is adopted as a basis; a drainage channel is constructed, such that a bypass is formed; polluted river water is introduced into the bypass from the branch, such that the retention time of the polluted river water in the bypass is increased; in the bypass, pollutants are removed with offline and online ecological engineering technology and environmental engineering technology; and purified water flows into a main stream, such that river water quality is improved, and river ecosystem is restored. The invention also discloses a purifying system used for realizing the bypass offline river purifying method. According to the invention, main stream river channel original status is not changed, main stream flood protection is not influenced, and water quality purification and ecological restoration effects are good. The method and the system are suitable for ecological management and ecological restoration of polluted river with rich branches, dense drainage irrigation channels, or developed ponds.

A method for restoring aquatic vegetation in eutrophicated shellow lake features that the hygrophyte, emergent aquatic plant and flootingleaf and floating plants are used to create a biologic fence for improving the local environment of outrophicated water, and the pilot nursing spermatophyte, following equatic and target plants are gradually introduced into the said fence to form a stable cycle of different aquatic plants in the year round.

The invention relates to a method for rehabilitating uranium contaminated soil by use of a functional plant community. According to the method, broussonetia papyrifera and Ilex cornuta, and reed, Pteris multifida Poir and difformed galingale herb (herbaceous plants), which can enrich uranium in the soil are selected to construct a stable plant community with a function of in-situ repairing for uranium contaminated soil, wherein all plants in the plant community can enrich uranium in the uranium contaminated soil and can transport the uranium into an overground part of the plants, thereby achieving the purpose of rehabilitating the uranium contaminated soil. The method comprises the following steps of firstly, performing seed treatment and sowing; secondly, trimming and fertilizing; thirdly, harvesting; and fourthly, treating in a concentrating manner. The method does not need other auxiliary means and is capable of overcoming the disadvantages that the plant species structure is simple, the plant community is instable and easy to degrade, the maintenance cost is high, the plant diseases and insect pests are more and the ecological functions are at a low level when the single plant species is used for repairing the uranium contaminated soil in an existing method, the five plants have synergistic effect, and the repairing efficiency is improved remarkably compared with that of the method adopting the single plant species for rehabilitating the uranium contaminated soil.

The invention relates to an ecological restoring method for stereoscopic greening of a high stability slope. An ecological curing agent is used to spray the soil on the slope to form a curing film toplay the role of windproof and sand fixation, then a reinforcement net and concrete are added on the slope face to reinforce the slope face, the stability of the slope face is improved by being combined with a stable structure layer, the non-woven fabric and a plant fiber mesh layer in the reinforcement net is easy to degrade, and the environmental protection is achieved, so that a water-retainingnutrition matrix layer and the slope can be combined more stably, and the anti-scour performance, firmness, high durability and high stability are achieved; a water-retaining nutrition matrix structure and nutrients are superior to the ordinary soil and contain various elements, the composition is comprehensive the growth needs of the plants can be met well, the plant growth is matched, the rapidgreening and ecological restoration are achieved, and the greening effect is permanent; and the small arbors and the small shrubs are cold, drought and barren resistance and high in resistance, a arbor, shrub and grass three-dimensional protection ecosystem is adopted, the balance of the rapid growth and slow growth is achieved, the biodiversity and stability of the population are improved, and the stability of slope greening is further improved.

A construction method for a river beach pool ecological purification system relates to a river ecological repairing technology. The technical scheme is that a crooked river channel is adopted as a construction area, one section in the construction area is a river section with the river bend central angle as 90-160 degrees and is provided with more than two bent portions, and the linear length of the construction area is 5-7 times as large as the average width of a main river channel at the river section. The method is characterized in that bend tops of the turning positions at the upper end and the lower end of the river channel in the construction area are dug for 50cm-2m downwards to build a deep pool, earthwork obtained through digging of the deep pool is used for constructing a shallow beach at the center of the river channel of a straight section between the two bent portions of the river channel in the construction area and on the side close to a convex bank at the turning positions of the river channel in the construction area, the shallow beach is 10cm-50cm higher than the original river bottom to form a river island or a river bank beach, large rocks with the specification of 30-80cm are piled on the upstream face of the constructed shallow beach, and a fish channel with the recessed depth as 20-50cm is constructed at the center of the river channel at the downstream of the constructed river island. The method is used for pollution regulation and ecological repairing of rivers.

The invention discloses a method for building an ecological littoral zone in a buffer area. The method comprises building of gabions, a low pond, multiple ponds and a retention canal. The method comprises the following specific steps: (1) a gabion area is built, wherein the gabions are built between a normal water level of a river and a level of a flood occurring every two years, and emergent aquatic plants are planted in gaps between the gabions; (2) the low pond is built, wherein a low area which is 20cm lower than the gabion area and 20cm lower than foundations of the multiple ponds is built between the level of the flood occurring every two years and the level of a flood occurring every twenty years; (3) a multi-pond system is built, wherein two rows of pond systems are built in the low pond area, substrate improvement is conducted, submerged plants are closely planted in the ponds, and the emergent aquatic plants are planted on the foundations and the circumferences of the ponds; (4) the retention canal is built, wherein the retention canal is built along the outside of the level of the flood occurring every twenty years. The method effectively solves the ecological problems that a surface source of a gentle slope area of the river is severely polluted, landscapes are poor, the biodiversity is reduced and water and soil loss occurs, and offers a feasible and efficient ecological restoration measure for recovery and reconstruction of a hydro-fluctuation belt.

A vegetative roof system includes modules for holding growth media in which plants can grow. The modules can communicate with each other, sharing moisture/nutrients, increasing airflow to enhance plant respiration, allowing soil-borne animals/insects to travel between modules, etc. A rooting channel and/or a scalloped sidewall allow the roots of plants in the module to extend to adjacent modules. Alignment notches in sidewalls facilitate alignment of rooting channels between adjacent modules. Vertical zones help facilitate placement of abutting modules flush with each other. The rooting channels may be formed at the vertical zones to enhance continuity between and among modules. Sheet inserts can control rooting between modules and restrict undesired spillage through rooting channels (temporarily if biodegradable). Module inserts help control the quantity and depth of growth media, affecting module weight and rooting levels. An elevated connector can secure two or more modules together using downwardly-radiating prongs.

The invention relates to a black and odorous and eutrophication water body biological and ecological remediation and treatment process. The treatment process can carry out source biological and ecological interception on surface water pollution and is combined with terminal water body bioremediation. The invention can not only control pollution load entering a water body, but also beautify river way and revetment of lakes, and doesn't occupies need extra land. The water body biological remediation system can improve a water micro-ecosystem, restore water body biodiversity, improve the self-cleaning capability of the water body, and effectively improve the water quality of the water body. The invention has great popularization value on the treatment of surface water, especially urban rivers and lakes.

Disclosed is the biological control method for orchard ecology, which integrates the techniques of utilizing natural enemy insects and biological pesticides, the insect hazard to the plants in the orchard can be controlled, the application of pesticide can be reduced substantially, the ecological environmental contamination to the orchard can be minimized.

The invention discloses a method for integrated culture of rice-finless eel-crayfishp-trionyx sinensis. The method comprises the following steps: placing myriophyllum aquaticum in a ring-shaped ditchof a paddy field; putting crayfish seedlings in April or August, putting trionyx sinensis seedlings and cipangopaludina cahayensis in May, and putting finless eel seedlings in late June to early July;performing feeding; and catching crayfish in early June or early October, and catching finless eels and trionyx sinensis in November to December. According to the method for integrated culture of therice-finless eel-crayfish-trionyx sinensis, ecosystem biodiversity of the paddy field is improved, cannibalism degree of the crayfish is reduced, requirement for live baits of the finless eels and the trionyx sinensis is satisfied; and the method has the advantages of higher biological diversity, easy catching, adequate supply of live baits, more stable culture yields, higher economic benefits, and the likes.

The invention provides an in-situ biological enhancing and benthic environment biological repairing method for bottom mud. The method comprises the following steps: 1) scattering a bottom mud biological curing repair agent into polluted bottom mud in a natural water domain and fully and uniformly stirring the mixture for 8-10 min to biologically modifying the bottom mud; 2) leaving the mixture tostand for 5-10 min after stirring, observing the character of the bottom mud which is modified, carrying out a next step if obvious mud-water separation is available, and otherwise, leaving the mixture to stand for 3-5 min continuously; 3) adding immobilized microbial carrier filler, and leaving the mixture to stand after full and uniform stirring. The method provided by the invention inhibits pollutant release of the bottom mud and degradation of the pollutants by means of the bottom mud biological curing repair agent and an immobilized microbial combination technique on a basis of not destroying the natural circulation of the water body, so that pollution of the overlying water body is reduced.

The invention discloses an air cathode microbial fuel cell constructed wetland device of a biological carbon matrix anode. The upper layer of the constructed wetland is an aerobic zone, the lower layer of the constructed wetland is an anoxic zone; the aerobic zone and the anoxic zone are respectively provided with a cathode electrode and a biological carbon matrix anode electrode; waste water enters the anoxic zone through a water supply system and an inflowing water distribution pipe; electrons and protons are generated by oxidizing organic matters by microorganisms; the electrons are transmitted to the cathode electrode of the upper aerobic zone by the biological carbon matrix anode electrode of the lower anoxic zone through an external circuit; the protons are transmitted to the aerobic zone through a packing medium; the protons are diffused to the aerobic zone through a solution to combine with the electrons and oxygen gas so as to generate water; finally, after being cleaned by the microorganisms in the upper aerobic zone, the waste water flows to a water drainage system through an outflow water collecting pipe. The constructed wetland device disclosed by the invention can efficiently remove organic matters, increase the generated power, and effectively improve water quality and pH value. The constructed wetland is various in organisms, good in processing effect, low in running and maintaining costs, energy saving and environment friendly.

The invention relates to a method for preventing and controlling soil-borne diseases of vegetables by the aid of crop straws. The method is characterized in that soil is flooded after the crop straws are applied to fields. The method particularly includes steps of thoroughly removing preceding crop residues in field parcels at the soil temperature higher than 20 DEG C; encircling the peripheries of the field parcels by soil to form soil ridges with the heights of about 20 centimeters; uniformly broadcasting the smashed crop straws with the lengths ranging from 10 centimeters to 15 centimeters into the fields; plowing soil by the depth ranging from 18 centimeters to 20 centimeters; flooding the field parcels by irrigation water for 5 days; keeping the depths the water above the surfaces of soil layers of the fields larger than 5 centimeters in flooding periods; performing rotary tillage on the soil by the depth ranging from 18 centimeters to 20 centimeters after the 5 days; flooding the field parcels for 15 days; stopping flooding the field parcels when oxidation reduction potential of the soil of the fields is reduced and ranges from 0mv to 40mv; naturally drying the soil and then applying fertilizers to the soil; performing rotary tillage on the soil and then planting crops in the soil. The applied fertilizers include 30 to 40 kilograms of urea and 20 to 30 kilograms of potassium phosphate fertilizers.

The invention relates to technology for safely planting crops in a cadmium polluted soil environment, in particular to a method for safe production in cadmium polluted soil by utilizing a low cadmium accumulation type celery cabbage. The above-ground part of the low cadmium accumulation type celery cabbage can reject the absorption of the cadmium in the cadmium enriched polluted soil, and the root can fix and adsorb the cadmium in the soil, so that the cadmium is prevented from being transferring upward to the above-ground part. The above-ground part of the celery cabbage is safe to be eaten or sold, and the root is carefully treated, so that the safety of the vegetable food is ensured, and the inedible part(the root) can also be used for fixing and adsorbing a large amount of cadmium in the soil; and by repeatedly planting the vegetable, the excessive cadmium in the polluted soil can be continuously removed, and the cadmium content in the edible part of the celery cabbage also meets the standard of the green safe vegetable. The technology has the advantages of low cost, no damage to physical-chemical properties of the soil, no secondary pollution, the realization of the combination of vegetable-planting and cadmium-removal in the polluted soil and the like.