CN112544157A - Method for building reservoir dam waste slag yard habitat - Google Patents

Method for building reservoir dam waste slag yard habitat Download PDF

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Publication number
CN112544157A
CN112544157A CN202011623285.6A CN202011623285A CN112544157A CN 112544157 A CN112544157 A CN 112544157A CN 202011623285 A CN202011623285 A CN 202011623285A CN 112544157 A CN112544157 A CN 112544157A
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China
Prior art keywords
habitat
soil
dam
ecological
waste residue
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CN202011623285.6A
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Chinese (zh)
Inventor
王鹏
赵清贺
赵通阳
雷雅凯
陈智敏
牛贺道
冯光伟
安增强
刘杰
张锋奎
侯晓辉
李培
杜辉
范磊
李甜甜
严成
李想
甄振洋
郝小玉
王乐
王鑫
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HENAN WATER & POWER ENGINEERING CONSULTING CO LTD
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HENAN WATER & POWER ENGINEERING CONSULTING CO LTD
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Priority to CN202011623285.6A priority Critical patent/CN112544157A/en
Publication of CN112544157A publication Critical patent/CN112544157A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/005Cultivation methods
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • A01G22/60Flowers; Ornamental plants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/70Artificial fishing banks or reefs
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00Rearing or breeding animals, not otherwise provided for; New breeds of animals
    • A01K67/02Breeding vertebrates
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K67/00Rearing or breeding animals, not otherwise provided for; New breeds of animals
    • A01K67/033Rearing or breeding invertebrates; New breeds of invertebrates
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The invention discloses a method for building a habitat of a waste residue field of a reservoir dam, which mainly comprises the following steps: 1. ecological base survey: investigating the design and operation condition of a reservoir dam, investigating the characteristics of a waste residue field, carrying out soil texture detection, knowing the biodiversity distribution and the habitat condition around the field and determining a habitat indicator species; 2. determining a repair target; 3. repairing the soil of the abandoned dreg site; 4. introducing an ecological water system; 5. and constructing various habitats according to actual conditions. The treatment method system has the advantages of wide treatment range, high treatment speed and good ecological effect, overcomes the limitations of the traditional treatment method, and fundamentally solves the problem of ecological environment deterioration of the abandoned dreg site of the reservoir dam. The invention integrates the habitat construction strategy into the treatment method, attracts the growth and the propagation of various animals and plants by reasonably constructing various habitats, and quickly realizes the ecological restoration of the waste residue field of the reservoir dam by utilizing the virtuous circle of the microbial community.

Description

Method for building reservoir dam waste slag yard habitat
Technical Field
The invention relates to treatment and transformation of a waste residue field of a reservoir dam, in particular to a method for building a habitat of the waste residue field of the reservoir dam.
Background
During the bearing and construction of reservoir dam engineering, a large amount of engineering waste slag is generated in the constructions of foundation excavation, main body pouring, water conveying holes, power stations and the like, a waste slag yard for accumulating the waste slag becomes an important component of engineering construction, and the occupied area is large (generally between 5 and 50 hectares). The waste residue is a mixture consisting of stone residue and subsoil, the physical structure of the soil is poor, the organic matter is insufficient, the pH value is unstable, the vegetation growth is difficult, and the water and soil loss is serious.
The traditional hydraulic engineering is used for preventing and treating water and soil loss in the construction period of a waste residue field through measures for water and soil conservation: on one hand, the soil is prevented from being washed away by water and lost by the measures of blocking, water drainage, covering and the like; on the other hand, the soil is fixed by planting measures such as trees, shrubs or grass planting, and the soil body of the slope is reinforced and is not easy to be washed away by water. However, after the main engineering is finished, attention is not paid enough to ecological restoration of the slag disposal site.
With the continuous promotion of ecological civilization construction, the treatment measures of the traditional engineering can not meet the requirement of the development of the times. The role of the ecological environment of the reservoir dam on the whole engineering safety and the ecological environment safety is more and more important to people. In order to fundamentally solve the problem of ecological environment deterioration of the reservoir dam site area, a new method for systematically building the ecological environment is needed to comprehensively and effectively restore the waste slag yard so as to improve the ecological environment quality of the waste slag yard area.
Disclosure of Invention
The invention aims to provide a method for building a habitat of a waste residue field of a reservoir dam to realize a good ecological restoration effect aiming at the problems that vegetation in the waste residue field is difficult to grow and cannot meet the quality requirement of ecological environment.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the invention relates to a method for building a habitat of a waste residue field of a reservoir dam, which comprises the following steps:
first, ecological base survey
Investigating the design and operation condition of a reservoir dam, investigating the characteristics of a waste residue field, carrying out soil texture detection, knowing the biodiversity distribution and the habitat condition around the field and determining a habitat indicator species;
secondly, determining a repair target;
thirdly, repairing the soil of the abandoned dreg site;
fourthly, introducing an ecological water system;
and fifthly, constructing the multi-type habitat according to actual conditions.
Specifically, the method comprises the following steps:
the design and operation conditions of the reservoir dam comprise a dam structure, the elevation condition of the water level in front of the dam, the condition of water and soil conservation batch, ecological base flow and the like;
the characteristics of the waste slag yard comprise the height of the waste slag yard, a side slope, floor area and soil resources;
the soil texture detection comprises the permeability coefficient, the volume weight, the organic matter content and the pH value of soil texture;
the biodiversity comprises various organisms such as fishes, amphibians, insects, birds, reptiles and the like; the indicator species includes species sensitive to the habitat, such as firefly, dragonfly, etc.
The second step of the invention comprises designing different habitat schemes according to the habitat characteristics of different organisms, designing different repairing measures according to the soil property characteristics of the abandoned dreg site, and determining different vegetation layouts according to the principle of fitting the ground to the trees; if the restoration target can be an ecological restoration demonstration base, a science popularization education base and the like; the functions can be divided into a wetland habitat area, a honey source habitat area, a bird habitat area and the like.
The third step of the invention is to restore the soil of the abandoned dreg site, which comprises the steps of firstly transforming the abandoned dreg site into an ecological micro-terrain (1: 3 is a basic stable slope for ecological planting) which is slowly reduced to 1: 3, and then respectively improving the structure, nutrients, pH value and salinization of the soil of the abandoned dreg site, so as to be beneficial to the growth of various plants.
Specifically, the method comprises the following steps:
when the soil structure is improved, impurities such as gravel, waste and the like in an effective planting layer of the soil are removed by adopting modes such as picking, sieving and the like, and the loamy characteristic of the planting soil is kept; sludge compost, animal compost and the like can be added to improve the soil viscosity when meeting sandy soil, and crushed branch compost, fine sand and other improvement materials can be added when meeting viscid soil; if the volume weight of the soil is more than 1.4g/cm3When the soil moisture permeation and absorption is less than 10-4cm/s, the soil compactness needs to be improved by measures such as deep scarification, punching and the like.
When soil nutrients are improved, firstly, the soil N, P, K and organic matters are measured, and the soil nutrients are effectively improved by adopting an improvement measure of organic fertilizer serving as a main component and inorganic fertilizer matching; encouraging the use of novel fertilizers and novel fertilization techniques with high nutrient utilization rates, such as controlled release, slow release fertilizers, liquid fertilizers, and the like.
When the soil acidity and alkalinity is improved, if the soil acidity is too strong, a neutral or slightly alkaline organic modifying agent is applied, such as lime for acid adjustment, and the lime dosage is calculated according to the determination of forest soil lime application dosage (LY/T1242-1999); if the soil is alkaline, acidic organic fertilizer or peat is used for regulation, and gypsum, phosphogypsum, sulfuric acid and the like are used for matching.
The method improves the soil salinization, and the construction of anti-seepage measures such as dam water blocking, foundation grouting and seepage blocking walls and the like in most of the waste slag field areas originally river beach lands influences the communication of the underground water level and surface water behind the dam, so that the soil salinization is easily caused. At the moment, soil is loosened, a modifier is added to improve the water permeability of the soil, the drainage condition is improved, and the like, so that drainage and salt drainage are facilitated. The modifier can be a composite modifier prepared from organic compost, peat, potassium sulfate, ferrous nitrate and the like according to a certain proportion.
The ecological water system introduced in the fourth step of the invention comprises a self-flowing water system and a fountain formed by combining a water source reserved in a waste residue field and the water level difference between the front and the back of a reservoir dam; the overflow weir is arranged to block the water storage surface, so that various habitat space forms are created while vegetation irrigation is met; and an artificial fish nest is combined for bank protection to create an aqueous ecological environment. The water surface shape is suitable for adopting a dendritic structure and a long vine melon-forming structure.
The multi-type habitat construction in the fifth step of the invention comprises the construction of a biological habitat, a plant habitat, a river bottom habitat, a wetland habitat, a honey source habitat and a forest and bird habitat. In particular, the present invention relates to a method for producing,
the materials can be used locally, and different biological habitats are constructed by using stones, resin, tree roots and other materials so as to meet the habitat requirements of indicator species and field original biological species, such as the comprehensive requirements of propagation, overwintering, foraging and the like of organisms such as butterfly species, dragonfly species, frogs and the like; planting various types of vegetation by combining the soil and the terrain of the refuse dump, and planting wetland plants along the water bank to attract fishes, butterflies, dragonflies, amphibians, mollusks and the like to live and forage; and the rest fields adopt a planting mode of mixing and matching flowering vegetation, evergreen and fallen leaves to manufacture honey source and larva food source plant forests, young bird and insect medium plant forests.
The river bottom habitat can be provided with water bodies in different water depths such as deep pools, shoals and the like, stones with the grain size of 30cm are put into the river bottom, and gaps are reserved for the shuttling and oviposition of the artificial fishes.
The wetland habitat can be used for planting various types of aquatic plants and providing habitats for larvae, and reeds, cattails, silvergrass, arundo donax and the like can be selected.
The honey-source habitat is used for planting various flowering vegetation, such as cherry blossom, rhododendron, cotton rose, lagerstroemia indica, safflower creeping oxalis, boswellia japonica and the like.
Forest and bird habitat, and construction of various forest lands such as metasequoia forest, ginkgo forest, bamboo forest, locust tree forest, persimmon forest, etc.
The invention has the advantage of fundamentally solving the problem of ecological environment deterioration of the abandoned dreg site of the reservoir dam. The treatment method and the system have the advantages of wide treatment range, high treatment speed and good ecological effect, and overcome the limitations of the traditional treatment method.
The invention integrates the habitat construction strategy into the treatment method, attracts the growth and the propagation of various animals and plants by reasonably constructing various habitats, and quickly realizes the ecological restoration of the waste residue field of the reservoir dam by utilizing the virtuous circle of the microbial community.
Drawings
FIGS. 1a to 1c are graphs of pH value, salt content and organic matter content obtained by detecting the soil of the spoil area.
Fig. 2 and 3 are schematic diagrams of the habitat constructed according to the embodiment of the present invention.
Detailed Description
The invention is more clearly explained by designing a specific habitat construction scheme by taking a certain reservoir dam waste disposal site in the central region of China as an example, so as to be convenient for the understanding and implementation of the technical personnel in the field.
After the dam body of the reservoir is constructed, the floor area of the slag abandoning field is measured to be about 51 hectares (510000 m)2) (ii) a The height of the slag disposal site is 2 meters, and the ratio of the slag disposal site to the side slope is 1: 1.5.
Firstly, investigating the ecological condition of a slag disposal area:
the designed storage capacity of the reservoir is about 12.5 hundred million m3And the installed capacity of the hydropower station is 2900 kw.
The dam type is a mixed dam, the dam length is 3667m, and the dam height is 20 m. Excavation amount of main engineering earth and stone of 257.12 ten thousand meters3(Natural square), earth and stone square backfill amount 495.99 ten thousand meters3(actual prescription), backfill required quantity 551.10 km3(Natural square), the balance calculation requires 403.20 km for loan3(Natural method), producing waste slag 109.22 ten thousand meters3(Natural square, folded Loose square 125.60 ten thousand meters)3). The engineering is provided with a slag discarding field 6, and the occupied area is 51.15hm2. Engineering construction and waste slag disturbance earth surface, so that original topography, landform and land utilization of waste slag area are realizedThe mode is changed, the natural habitat of the site is interfered, and habitat construction and ecological restoration are urgently needed.
1. Detecting the soil quality of the waste residue field:
the dam site area soil detection method comprises the steps of setting 62 sample points for dam site area soil detection, wherein two layers of soil are taken from each sample point, a middle layer sample is taken, the weight of each layer of sample is about 500 g, and the weight of each layer of sample is 20-30 cm of eluviation layer and 50-60 cm of settled layer soil. Through measurement, the infiltration rate of the upper leaching layer is 8mm/h, the pH value of the soil is 5.5-7.5, the salt content is 0.0199-0.0681 mS/cm, and the organic matter content is 4.09-24.5 g/kg. The infiltration rate of the soil of the lower sedimentary layer is 7.5mm/h, the pH value of the soil is 5.7-7.7, the salt content is 0.0159-0.0979 mS/cm, and the organic matter content is 6.35-24.5 g/kg.
Specific detection results are shown in fig. 1a-1c, wherein fig. 1a shows the soil pH value measured by 62 sample points (the red line has a depth of 20-30 cm, and the blue line has a depth of 50-60 cm); FIG. 1b shows the salt content of the soil measured at 62 sample points (the red line has a depth of 20-30 cm, and the blue line has a depth of 50-60 cm); FIG. 1c shows the measured organic matter content values of the soil at 62 sample points (the red line has a depth of 20-30 cm, and the blue line has a depth of 50-60 cm).
From the test results, it can be seen that: the viscosity of the soil in the waste residue field is high, the salt content is low, the distribution of organic matters is uneven, and the pH value and the infiltration rate are generally normal.
2. According to the natural environment of the original region and the biological distribution situation of the periphery, determining a suitable habitat indicator species:
the central region is in warm climate, belongs to northern temperate region continental season climate, and has distinct four seasons, rain and heat in the same period, and dry and cold in the same season. The average rainfall of the site of the project is 1000mm for many years, the resources of animals and plants are rich, the period of 7-10 months is the active period of the firefly in the region, the firefly is positioned at the bottom layer of an ecological chain and is extremely sensitive to the change of ecological bases such as soil, vegetation and water quality, the characteristics of the firefly are obvious and easy to observe, and therefore the firefly is selected as an indication species for the construction of the project habitat.
Second, design and construction scheme
Designing a construction scheme of the habitat according to the practical situation of the first step of investigation and test:
the design principle is as follows:
1. the materials are obtained locally. Through the accumulation for many years, the local materials, regional wind, water and climate form a harmonious physiological substrate, which is beneficial to forming the most suitable microenvironment for local species.
2. The habitat is various. Different living environments are needed in different periods of organisms such as eggs, larvae, adults and deaths, and the diversified habitats are beneficial to inhabitation of various organisms in different growth stages so as to enrich upstream and downstream food chains of the indicated species.
3. And 3, integrating the landscape. Proper human observation activities are considered, and an ecological sight spot is provided for the city.
The scheme of the finished design is shown in fig. 2 and fig. 3: the method comprises an overflow weir A, a microtopography B (undulating terrains formed by piling up nearby by excavating stream earthwork), a maintenance observation road C, a wetland habitat D, a river bottom habitat E and a forest and grass habitat F.
Thirdly, repairing the soil of the refuse dump according to a design scheme to meet the requirements of planting or breeding
According to the result of detecting the soil quality of the abandoned dreg site, the soil can be comprehensively improved by adopting the measures which take physical means as main measures and take biological means as auxiliary measures:
physical means: the method is carried out by improving the soil structure, adding 20cm thick sand and 10cm fully decomposed organic medium on the surface of original soil, and deeply stirring to solve the problems of high soil viscosity and low organic matter content.
Biological means: when a plurality of kinds of plants are planted, mollusks such as earthworms and snails are introduced, so that the soil structure is improved, the soil nutrient is increased, and meanwhile, a sufficient food source is provided for the indication species (firefly).
Fourthly, introducing ecological water system
The water source of the waste slag yard water system comes from the north side irrigation hole, and is provided with a pipeline for automatically flowing water for 0.1m3And/s, the water system finally converges into the main river channel behind the dam. The total length of the water system is 3.0km, the longitudinal slope is 0.1 percent, three overflow weirs are arranged to block the water surface, the water depth is controlled to be 0.5-1.5m, the water surface width is 10-30m, and the river bank side slope is 1: 3. The flowing water body can adjust various characteristics of soil, and various wading spaces are provided for organismsDiverse habitats.
Five or more types of habitat construction
According to the principle that the tree is suitable in the ground and the habitat is various, aiming at the selected indication species (firefly), three types of habitat types are set by combining four growth stages of firefly eggs, larvae, pupae and adults: river bottom habitat, wetland habitat and forest and grass habitat.
River bottom habitat: aquatic firefly larva lives in aquatic, and this engineering is at local river bottom department inhomogeneous throwing in particle size 30 cm's local nature stone, leaves the space between the stone, provides the place of sheltering for the larva.
Wetland habitat: fireflies often lay eggs and nest in a near-water humid environment, local aquatic hygrophytes including cattail, calamus, loosestrife, allium mongolicum, cymbopogon simonsii and the like are planted in a water system shallow water area, and the planting density is 25 plants/m2(ii) a Can attract frog, various fishes and water birds to build holes and forage ahead. Feces from various organisms can reproduce algae, which are the food source for spirochetes and the main food source for fireflies.
Forest and grass habitat: is the main place for the firefly larva, adult foraging and luminous life. The water system excavates earthwork and piles up nearby to form a relief terrain with the height of 0.5-1.5m, and plants food source tree species such as metasequoia, persimmon trees, loquat, magnolia and the like, wherein the nursery stock specification selects the diameter at breast height of 8cm, and the planting density is 3m x 3 m; planting Trifolium repens, Sphaerotheca florida, rape flower, safflower creeping oxalis and other sowing ground cover plants in the forest, wherein the sowing quantity is 25g/m2(ii) a It can provide habitat and foraging environment for various organisms such as birds and insects, and enrich food chain structure.

Claims (6)

1. A method for building a habitat of a waste residue field of a reservoir dam is characterized by comprising the following steps: the method comprises the following steps:
first, ecological base survey
Investigating the design and operation condition of a reservoir dam, investigating the characteristics of a waste residue field, carrying out soil texture detection, knowing the biodiversity distribution and the habitat condition around the field and determining a habitat indicator species;
secondly, determining a repair target;
thirdly, repairing the soil of the abandoned dreg site;
fourthly, introducing an ecological water system;
and fifthly, constructing the multi-type habitat according to actual conditions.
2. The ecological environment construction method for the abandoned dreg site of the dam of the reservoir as claimed in claim 1, wherein: the design and operation conditions of the reservoir dam comprise a dam structure, a dam front water level elevation condition, a soil and water conservation batch condition and an ecological base flow;
the characteristics of the waste slag yard comprise the height of the waste slag yard, a side slope, the occupied area and a soil source;
the soil texture detection comprises the permeability coefficient, the volume weight, the organic matter content and the pH value of soil texture;
the indicator species includes species that are sensitive to a habitat.
3. The method for building the habitat of the abandoned dreg site of the dam according to claim 1, wherein the method comprises the following steps: the second step of the restoration target comprises designing a scheme according to the inhabitation characteristics of different organisms, designing restoration measures according to the soil property characteristics of the abandoned dreg site, and determining the vegetation layout according to the principle of fitting the ground to the trees.
4. The method for building the habitat of the abandoned dreg site of the dam according to claim 1, wherein the method comprises the following steps: and the third step of repairing the waste residue field soil comprises the steps of firstly transforming the waste residue field into an ecological microtopography which is slowly reduced to 1: 3, and then respectively improving the structure, nutrients, pH value and salinization of the waste residue field soil so as to be beneficial to the growth of various plants.
5. The method for building the habitat of the abandoned dreg site of the dam according to claim 1, wherein the method comprises the following steps: the fourth step of introducing the ecological water system comprises the steps of adopting a waste residue field to reserve a water source and combining the water level difference between the front and the back of a reservoir dam to form an automatic water system and a fountain; the overflow weir is arranged to block the water storage surface, so that various habitat space forms are created while vegetation irrigation is met; and an artificial fish nest is combined for bank protection to create an aqueous ecological environment.
6. The method for building the habitat of the abandoned dreg site of the dam according to claim 1, wherein the method comprises the following steps: and fifthly, the multi-type habitat construction comprises the construction of a biological habitat, a plant habitat, a river bottom habitat, a wetland habitat, a honey source habitat and a forest and bird habitat.
CN202011623285.6A 2020-12-31 2020-12-31 Method for building reservoir dam waste slag yard habitat Pending CN112544157A (en)

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