57results about How to "Restore diversity" patented technology

The invention discloses a construction method for ecological restoration of riparian vegetation of mountain rivers. The method includes the following steps: (1), for restoration of aquatic vegetation, dispersedly planting potamogetonaceae and hydrocharitaceae submerged plants high in washing-out resistance in a project region; (2) for restoration of riverway rock and boulder vegetation, planting wetland plants strong in washing-out resistance in rock and boulder regions and the like in a riverway in the project region; (3) for restoration of waterfront plants, planting emerging plants and aquatic plants with washing-out resistance and deep roots between the riparian normal water level and the two-year flood level in the projection region; (4) for restoration of riparian vegetation, planting waterlogging-tolerance trees and shrubs of juglandaceae, betulaceae and the like between the two-year flood level and the 20-year flood level in the project region, and planting gramineae and cyperaceae herbaceous plants with deep roots in ground covers. By the method, the ecological problems about riparian water and soil erosion, weak river's self-purification capacity, sharp decline in biodiversity and the like are solved effectively, feasible and effective ecological remediation measures are provided for natural restoration and reconstruction of river banks and riverways.

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 provides an ecological restoring method of a river water body, comprising the following steps: (1) detecting pollution indexes of a river water body; (2) throwing composite microbial agents into a water body according to 5ppm to 9ppm; (3) transferring, translating and degrading matters in the river water body by the composite microbial agents; (4) throwing and/or planting water plants into a river; (5) detecting the pollution indexes of the river water body; and (6) repeating the steps from (2) to (5) from 15 days to 30 days until the river water body conforms to requirements. Each composite microbial agent comprises the components by weight percent: 5 to 10 photosynthetic bacteria, 10 to 15 bacillus subtilis, 5 to 10 nitrifying bacteria, 2 to 5 microzyme, 15 to 20 lactobacillus, 10 to 30 aspergillus, 10 to 30 acetobacter and 20 to 30 actinomyces. The ecological restoring method of a river water body aims at a river water body which carries out eutrophication treatment, leads the river water body to restore the bio-diversity of the river water body, radically restores ecology and has durable effect, low cost and simple use.

The invention discloses a method for remediating polycyclic aromatic hydrocarbon (PAH) polluted soil through cooperation of alfalfa and complex microbial inoculants. Alfalfa seeds are pretreated, and the plant sprouting period is shortened by 2-3 days, so that the tolerance of the plant to soil containing PAHs is enhanced, and the remediating capacity of the plant on the soil is improved. Besides, in an alfalfa-trichoderma-nodule bacterium combined remediating system, the synergistic effect of trichoderma and nodule bacteria is used for promoting degradation of the alfalfa to the PAHs in the polluted soil. Meanwhile, the physiological contour of the microbial population level of alfalfa rhizosphere soil is changed, and the diversity and the stability of the microbial ecological functions of the soil are recovered, so that the growth environment of crops is improved, and the quality and the yield of the crops are improved; the method has wide market application prospects.

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.

The invention discloses a chemistry-plant combined remediation method of fluoride-type combined pollution site soil. The chemistry-plant combined remediation method of fluoride-type combined pollution site soil comprises the following steps: firstly, crushing and screening pollution soil particles; then placing the soil particles into a soil multielement ex-situ remediation device, adding mixed eluant, and carrying out continuous ex-situ synergism elution by adopting the mode of ultrasonic intensification and warming treatment synchronously; then inoculating purslane for eluted soil, and applying a nutritious source buffer liquid equal to 30%-40% of soil mass; culturing and growing artificially, and completing the remediation. Perfluorinated compounds, polycyclic aromatic hydrocarbon and multiple types of heavy metals in site soil can be eluted efficiently and synchronously; purslane inoculation and outer source nutritional substance adding are beneficial to the deep degradation by combining with residual state polycyclic aromatic hydrocarbon after soil elution, and are also beneficial to the recovery of microorganism ecological function universality and stability of the pollution soil environment.

The invention relates to a rapid recovery method of a natural river landscape of a city. Firstly, the water width and the water depth of a river are measured, the flow cross section of the river is calculated, under the condition that original hard banks are remained, a riverbed is excavated according to the characteristics of the cross section of an original riverbed, the river flow volume of the excavated riverbed equals to the river flow volume of the original riverbed, and the flood carrying capacity of the river is remained; and then, an earth work generated in the excavation of the riverbed is refilled between the hard banks and a riprap slope, an earth slope with a cross section progressively increasing from top to bottom is formed after roller compaction is conducted. Compared with the prior art, hard slope protection does not need to be removed, on the basis of the original width of the river, the riprap slope and the earth slope are built, a structure with a shallow and a deep pool is formed, diversified river local terrains are created relying on the natural evolution of the river, the biological habitat of the river is improved, the diversity of a water flowing and water ecological system is recovered, and the rapid recovery of a river ecological system is achieved.

The invention provides a method for controlling the growth of alligator alternanthera, which is characterized by comprising the steps of: removing alligator alternanthera at the riverway shoreside with a physical method, then constructing a riverway riparian zone reed group, and sequentially constructing an aquatic plant group from two sides of the riverway shoreside to the riverway center direction. The method for controlling the growth of the alligator alternanthera, replaced with three-dimensional plants, has the advantages of low investment, environment friendless, higher practical value and wide application prospect.

The invention discloses a building method for a farmland ecological drainage ditch preventing the ditch wall soil loss. By performing preliminary processing on an original drainage ditch, a water collecting well is arranged at the joint of a farmland drainage port and the ecological drainage ditch, and after being subjected to preliminary precipitation in the water collecting well, farmland runoff enters the ecological drainage ditch through a water outflow weir; on the basis of solidifying of holes reserved in the ditch bottom of the ecological drainage ditch and ditch wall sloping treatment, the ditch wall of the ecological drainage ditch is subjected to strengthening treatment by means of porous ecological drainage ditch side plates, and purifying plants are planted in vegetation planting holes reserved in the side slope and the bottom of the ecological drainage ditch; and finally, a water baffle is arranged on a drainage port of the ecological drainage ditch, and the farmland rainfall runoff is purified by the ecological drainage ditch and then enters a river. The building method for the farmland ecological drainage ditch preventing the ditch wall soil loss has the beneficial effects of being easy, convenient and practicable, capable of preventing the ditch wall soil loss, stable in structure, good in purifying effect, good in landscape effect and the like.

The present invention relates to soil improvement method, and is especially method for repairing alkali spot soil with furfural slag and Atriplex hortensis. Furfural slag as a kind of acid biomass contains rich organic matter, humic acid, nitrogen fertilizer, phosphate fertilizer, potash fertilizer and trace elements essential for plant to grow and has excellent effect of lowering soil pH value, activating calcium and magnesium salt and improving soil physical and chemical properties. The present invention repairs alkali spot soil through turning over soil, adding furfural slag, banking, leaching, seeding Atriplex hortensis, field management and other steps. The present invention has the advantages of environment friendship, low cost, fast effect, etc.

The invention provides a synergistic elution and remediation method for tetracycline and heavy metal compound high-abundant resistant gene contaminated site soil. The synergistic elution and remediation method comprises the following steps: firstly, crushing and screening the contaminated soil particles; placing the soil particles into a soil multielemental ex-situ remediation equipment, adding grass carp sperm DNA powder as an eluting liquid, and performing continuous ex-situ synergistic elution by adopting ultrasonic enhancement and temperature rise processing mode; applying a nutrient source buffer solution the mass of which is 10-20% that of the soil; and artificially culturing growth to complete remediation. According to the method, tetracycline, related tetracycline-resistant genes and various heavy metals in the soil can be simultaneously eluted and removed; the added foreign nutrition substances facilitate the rapid recovery of the diversity and stability of environmental microorganism ecological functions of eluted soil, and are capable of effectively alleviating the abundance secondary promotion and diffusion of the tetracycline-resistant genes in the soil.

The invention discloses a coral reef bioremediation method based on macrocalcified algae. Halimeda sp., Amphiroa sp. and/or crustose coralline algae are planted at the seabed of a coral reef to-be-repaired sea area through three artificial transplantation modes, i.e., a mesh method, a cement plate algal reef method and/or an in-situ reef fixation method. Through three macrocalcified algae transplanting methods provided by the invention, the survival rate of algae can be remarkably increased; meanwhile, the methods are simple, rapid and low in cost and have wide application in the aspects of restoring and maintaining diversity and stability of a coral reef ecological system.

The invention discloses a microbial degradation ecological restoration method comprising the following steps: S1, exploring a river channel; S2, cleaning the surface of the river channel; S3, cleaning the bottom of the river channel; S4, detecting and treating; and S5, managing and monitoring. Bottom mud cleaned in the step S3 is accumulated to the two sides of the river channel, and a river shoal is formed; and aquatic plants and hygrophytes are planted on the river shoal, and ecological restoration treatment of the bottom mud is completed. According to the requirements of aquatic organisms for hydrology and habitat conditions, the river channel form is properly transformed, fish organisms in the original river channel are not damaged, meanwhile, proper aquatic organism varieties and microbial treatment agents are configured in different habitat areas, a river channel ecological system is effectively restored, the self-cleaning capacity of the river channel is improved, the biodiversity is recovered, and the function of an ecological system is improved; and meanwhile, the repaired river channel can be detected for a long time through the repairing method, and the river channel is prevented from being repeatedly polluted.

The invention provides an intertidal zone three-dimensional restoration method, and relates to the field of intertidal zone treatment. The intertidal zone three-dimensional restoration method comprises the following steps of mowing spartina alterniflora, and performing dam flooding to kill plants; conducting high tidal flat suaeda salsa repairing, using overground parts of the plants of the spartina alterniflora for arranging terrain, sowing suaeda salsa seeds on a shallow layer of a supratidal zone, and creating a micro-terrain to intercept the suaeda salsa seeds; conducting low-tide-level seaweed bed repairing, and treating a low-tide-beach seaweed bed degradation area; and conducting enhancement and releasing of benthic organism seedlings to restore mudflat benthic animals. By mowing and flooding the spartina alterniflora, the overground parts of the plants can be recovered and utilized through suaeda salsa, the benthic animals are recovered after high tidal flat suaeda salsa repairing and low tidal level seaweed bed repairing are conducted, three-dimensional repairing of an intertidal zone is completed, and the diversity of the intertidal zone is recovered.

The invention discloses an electronic flocculation treatment method under a low-turbidity water quality condition. The method comprises the following steps: A, firstly, introducing low-turbidity sewage into a raw water regulating tank for preliminary adjustment; B, treating pre-treated sewage, applying current to water body in a device by dissolvable plates and current generators in an adjusting cell, and coagulating particulate matters in the water to form flocculent precipitate; C, electrifying the low-turbidity water after flocculation again to react, demulsifying the low-turbidity sewage,and bleaching; D, subsequently, injecting the pre-treated low-turbidity sewage into a centrifugal clarifier for centrifugation; and E, separating precipitated flocculants from clean water. In the method disclosed by the invention, an electronic flocculant technology is used for treating the low-turbidity water in a high-speed and high-efficiency manner, and the organic combination of a water treatment technology, an automation control technology and a computer technology is used for treating the low-turbidity water, so that the staffing and labor intensity are reduced, and the automation levelof an enterprise is improved.

The invention discloses a riparian zone structure for ecological restoration of an urban river channel and a restoration method of the riparian zone structure. According to the riparian zone structure, river channel areas related to the technology comprise a deep water area, a shallow water area, a floodplain area, a revetment and a river channel side slope of the urban river channel, the riverway ecological restoration technology takes riverway habitat restoration as a core and is used as a part of a riverway ecological restoration comprehensive system, and a stable riverway ecological system and a natural landscape are recovered and formed from the four aspects of transformation of a riverway plane and section structure, control and adjustment of riverway hydrology, change of a riverway bottom matrix and introduction of fast-growing organisms, transformation of a revetment and transformation of a riverway slope. Different from a traditional engineering type riverway transformation project, the technology is mainly used for improving the function of a riparian zone serving as a habitat of aquatic, hygrophytic and terrestrial animals and plants of the riverway and restoring the biodiversity of the riverway, the ecological integrity and sustainability of the riverway can be essentially improved, and the function of a natural ecological system of the riverway can be restored.