CN115299320A - Roof greening soil buffer structure layer and construction method thereof - Google Patents
Roof greening soil buffer structure layer and construction method thereof Download PDFInfo
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- CN115299320A CN115299320A CN202211013221.3A CN202211013221A CN115299320A CN 115299320 A CN115299320 A CN 115299320A CN 202211013221 A CN202211013221 A CN 202211013221A CN 115299320 A CN115299320 A CN 115299320A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/40—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
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- A—HUMAN NECESSITIES
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- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
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- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
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Abstract
The invention discloses a roof greening soil buffer structure layer which sequentially comprises a protective layer, a first water and fertilizer retention layer, a matrix structure layer and a second water and fertilizer retention layer from top to bottom, wherein a flow guide structure is arranged in the roof greening soil buffer structure layer in the vertical direction. The invention can achieve the water and fertilizer retention, promote the vegetation growth and the soil carbon fixation potential, and achieve the maximization of the roof greening ecological benefit.
Description
Technical Field
The invention belongs to the technical field of roof greening, and particularly relates to a roof greening soil buffer structure layer and a construction method thereof.
Background
The city roof is the fifth surface of the city and occupies about one of 1/5 of the city area. The greening of the urban roof not only can beautify the city, but also has great economic, social and ecological benefits. A research of environmental administration of United nations shows that if the roof greening rate of a city reaches more than 70%, the carbon dioxide content in the air of the city is reduced by 80%, and the heat island effect is completely eliminated. The whole temperature of the city with green roof in summer can be reduced by 1-2 ℃, and meanwhile, the utilization rate of water resources can be improved, and urban flood can be relieved.
The construction of the soil layer in roof greening determines the efficiency of roof greening, the later maintenance cost, the soil carbon sequestration and other ecological benefits. For example, in consideration of the bearing pressure of the roof, the greening roof has thinner soil layer, faster water heat transmission and flow, is easy to cause waterlogging in wet time and dryness in dry time, influences the growth of vegetation, limits the carbon fixing capacity of the vegetation and reduces the greening effect of the roof. The existing research on roof greening mainly focuses on research and development of greening matrix materials, and most of roof soil layers are constructed in a single and homogeneous mode, the self structure adjusting function of the soil matrix cannot be exerted, so that the artificial maintenance cost such as later irrigation is high, and the self carbon sequestration potential of the soil is low.
In order to solve the problems, the inventor thinks that the economic and ecological benefits of roof greening can be maximized by constructing a multifunctional soil buffer structure layer and exerting the self-regulation and functional effects of soil.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a roof greening soil buffer structure layer and a construction method thereof, wherein the roof greening soil buffer structure layer achieves the purposes of water and fertilizer retention, vegetation growth and soil carbon sequestration potential promotion, and the maximization of roof greening ecological benefits is achieved.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a roof greening soil buffer structure layer, top-down contains protective layer, first water conservation in proper order protects fertile layer, matrix structural layer and second and protects water and protect fertile layer, still be provided with the water conservancy diversion structure in the roof greening soil buffer structure layer in the vertical direction.
The roof greening soil buffer structure layer provided by the embodiment of the invention at least has the following technical effects: the protective layer can effectively prevent soil evaporation, reduce soil moisture loss, simultaneously does not retain rainwater, and promotes rainfall to permeate downwards; the first water-retaining fertilizer-retaining layer and the second water-retaining fertilizer-retaining layer can protect water and nutrients to the maximum extent and play a role in slowly releasing water and fertilizer; the matrix structure layer plays a role in supporting vegetation growth, promoting root growth, increasing biomass of organic matters such as soil roots and the like, and improving the carbon sequestration potential of soil; the flow guide structure can reduce the interface resistance of the vertical connection position of the multilayer interfaces and buffer the vertical flow of water and heat.
According to some embodiments of the invention, the flow guide structure is a vertical flow guide channel vertically arranged in the roof greening soil buffer structure layer, the top end of the vertical flow guide channel is arranged in the protective layer, and the bottom end of the vertical flow guide channel is arranged in the substrate structure layer.
According to some embodiments of the invention, the vertical flow guide channels are filled with ceramic particles.
According to some embodiments of the invention, the vertical flow-guiding channels have a diameter of 1-3 cm.
According to some embodiments of the invention, the material of the protective layer comprises at least one of ceramsite and perlite. The purposes of light weight, small water absorption, evaporation prevention and quick water drainage can be achieved.
According to some embodiments of the invention, the protective layer has a thickness of 1-2 cm.
According to some embodiments of the invention, the first water and fertilizer retaining layer is made of a material including wormcast organic fertilizer. The earthworm cast organic fertilizer is an organic substance treated by earthworms, has a better granular structure and strong water and fertilizer retention capacity, can fully absorb and store upper-layer infiltration water for vegetation growth, and has the effect of slowly releasing water and fertilizer.
According to some embodiments of the invention, the constituent material of the second water and fertilizer retention layer comprises wormcast organic fertilizer. The earthworm cast organic fertilizer is an organic substance treated by earthworms, has a better granular structure and strong water and fertilizer retention capacity, can fully absorb and store upper-layer infiltration water for vegetation growth, and has the effect of slowly releasing water and fertilizer.
According to some embodiments of the invention, the first water and fertilizer retaining layer has a thickness of 2-5 cm. The thickness of the second water and fertilizer retaining layer is 2-5 cm.
According to some embodiments of the invention, the constituent material of the substrate structure layer comprises a vegetation growth substrate. The substrate structure layer is a main space for the growth of the vegetation root system and is also a soil layer for fixing carbon in soil for a long time, and plays a role in supporting and maintaining the growth of the vegetation.
According to some embodiments of the invention, the vegetation growth substrate comprises at least one of peat soil, humus soil and silt.
According to some embodiments of the present invention, the material of the substrate structure layer further comprises an organic additive, and the organic additive comprises at least one of coconut coir, straw and organic fertilizer.
According to some embodiments of the invention, the thickness of the matrix structure layer is 10-40 cm. When the vegetation to be cultivated is a ground cover plant, such as Curculigo latifolia, cynodon dactylon, taiwan grass, etc., the structural layer of the matrix may be 5-10 cm. When the cultivated vegetation is shrubs, such as camellia, bougainvillea, osmanthus fragrans and the like, the matrix structure layer can be 20-30 cm. When the cultivated vegetation is trees, such as cercis negundo, podocarpus macrophyllus, wampee, etc., the thickness of the matrix structure layer may be 40 centimeters.
According to some embodiments of the present invention, when the drainage condition of the roof is poor or the drainage of the cultivation container is not smooth, a protective layer may be additionally added to the bottom of the soil buffer structure layer.
The invention also aims to provide a construction method of the roof greening soil buffer structure layer, which comprises the following steps:
a construction method of the roof greening soil buffer structure layer comprises the following steps:
(1) Laying wormcast organic fertilizer on the roof of the building to form the second water and fertilizer retention layer;
(2) Paving a vegetation growth substrate on the second water and fertilizer retention layer to form the substrate structure layer;
(3) Laying wormcast organic fertilizer on the substrate structural layer to form the first water and fertilizer conservation layer;
(4) At least one of ceramsite and perlite is laid on the first water and fertilizer retention layer to form the protective layer, meanwhile, the matrix structure layer is laid, the first water and fertilizer retention layer and the protective layer are reserved with a pore channel, non-woven fabrics are laid along the bottom wall and the inner wall of the pore channel, and the pore channel is filled with ceramsite to form the vertical flow guide channel.
According to some embodiments of the present invention, the first water and fertilizer retaining layer and the second water and fertilizer retaining layer may be hardened during extreme drought, and may be constructed by mixing a small amount of crushed straw or garden waste.
The beneficial effects of the invention are:
(1) According to the invention, the function of regulating the moisture of the greening soil can be exerted by constructing the functional layer with a multi-layer structure, and the upper protective layer can prevent evaporation, promote precipitation infiltration and reduce moisture loss; the water and fertilizer retaining layer (the first water and fertilizer retaining layer) can fully absorb the water from the protective layer and store the water; the middle matrix structure layer can continuously store the upper layer of water for vegetation growth; the bottom water and fertilizer retaining layer (the second water and fertilizer retaining layer) can reduce the leakage loss of water and fertilizer. The greening soil buffer structure layer promotes the self water regulation function of soil, plays the role of storing water and preserving soil moisture, saves irrigation water and reduces the later-stage manual maintenance cost.
(2) According to the invention, the constructed soil buffer structure layer has different soil layer structures in the vertical direction, so that the hydrothermal transmission and flow between layers can be reduced, and the effects of water storage and moisture preservation, water-thermal transmission buffer and water and fertilizer loss are further achieved.
(3) According to the invention, the diversion structure with the porous medium characteristic is constructed in the soil buffer structure layer, so that the interface resistance at the joint of different soil layers in the vertical direction can be reduced, the hydrothermal vertical flow is buffered, and the effects of water storage and soil moisture preservation are further achieved.
(4) The water and fertilizer retention layer can play a role in slowly and continuously releasing soil fertility to supply vegetation for growth while retaining water, and reduces the later fertilization frequency and the management and protection cost.
(5) According to the invention, by constructing the soil buffer structure layer, the growth of vegetation and root systems can be promoted, the return amount of the vegetation to soil organic substances is increased, the total organic carbon content of soil is increased, and the maximum carbon sequestration benefit of the soil is achieved.
(6) The invention can reduce the later-stage management and protection cost and improve the roof greening ecological benefit, thereby accelerating the promotion of roof greening construction, improving the urban greening rate, beautifying the city and improving the social benefit.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Reference numerals:
100. a vegetable layer;
200. a roof greening soil buffer structure layer; 201. a protective layer; 202. a first water and fertilizer preserving layer; 203. a matrix structure layer; 204. a second water and fertilizer retaining layer;
300. a vertical flow guide channel;
400. and (5) building a roof.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the essential numbers, and greater than, less than, etc. are understood as including the essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
A roof greening soil buffer structure layer according to an embodiment of the present invention will be described with reference to fig. 1.
As shown in fig. 1, a roof greening soil buffer structure layer 200 according to an embodiment of the present invention sequentially includes, from top to bottom, a protective layer 201, a first water and fertilizer retaining layer 202, a matrix structure layer 203, and a second water and fertilizer retaining layer 204, and a flow guide structure is further disposed in the roof greening soil buffer structure layer 200 in a vertical direction.
Specifically, the roof greening soil buffer structure layer 200 is arranged on a building roof 400, the vegetable layer 100 is planted on the roof greening soil buffer structure layer 200, the roof greening soil buffer structure layer 200 is a whole cultivation substrate, all the layers in the roof greening soil buffer structure layer are directly connected, the protective layer 201 can effectively prevent soil evaporation, reduce soil moisture loss, simultaneously, does not retain rainwater, and promotes downward penetration of rainfall; the first water and fertilizer retention layer 202 and the second water and fertilizer retention layer 204 can protect water and nutrients to the maximum extent and have the effect of slowly releasing water and fertilizer; the substrate structure layer 203 plays a role in supporting vegetation growth, promoting root growth, increasing biomass of organic matters such as soil roots and the like, and improving the carbon sequestration potential of soil; the flow guide structure can reduce the interfacial resistance at the vertical connection position of the multilayer interfaces and buffer the hydrothermal vertical flow, and the roof greening soil buffer structure layer 200 plays a role in soil self structure through a soil multilayer structure, so that the effects of water storage and soil moisture preservation, hydrothermal transmission and loss buffering are achieved, vegetation growth is promoted, the later-stage manual maintenance cost is reduced, and the economic, social and ecological benefits are improved.
In some embodiments of the present invention, the diversion structure is a vertical diversion channel 300 vertically disposed in the roof greening soil buffer structure layer 200, the top end of the vertical diversion channel 300 is in the protective layer 201, and the bottom end of the vertical diversion channel 300 is in the matrix structure layer 203.
In some embodiments of the present invention, the vertical flow guide channel 300 is filled with ceramic particles.
In some embodiments of the invention, the vertical flow channels 300 have a diameter of 1-3 cm.
Specifically, the vertical flow guide passage 300 has a diameter of 2 cm.
In some embodiments of the present invention, the material of the protective layer 201 includes at least one of ceramsite and perlite.
Specifically, the protective layer 201 is made of ceramsite and perlite, and can achieve the purposes of light weight, small water absorption, evaporation prevention and quick water drainage.
In some embodiments of the invention, the thickness of the protective layer 201 is 1-2 cm.
Specifically, the thickness of the protective layer 201 may be appropriately adjusted according to local climate conditions, and when the rainfall amount and the annual air temperature are high, the thickness of the protective layer 201 may be appropriately increased.
In some embodiments of the present invention, the first water and fertilizer retaining layer 202 is made of organic fertilizer containing wormcast.
Specifically, earthworm cast organic fertilizer is the organic substance that has handled through the earthworm, has better aggregate structure, and its water conservation fertilizer conservation ability is strong, can fully absorb and store the upper strata infiltration water, supplies with the vegetation growth, plays the effect of slow effect release water manure, can reduce the phenomenon of hardening that appears when the extreme arid of soil through sneaking into a small amount of kibbling straw or gardens discarded object organic matter in the water conservation fertilizer conservation layer simultaneously, strengthens the suitability of water conservation fertilizer conservation layer.
In some embodiments of the present invention, the material of the second water and fertilizer retaining layer 204 includes wormcast organic fertilizer.
Specifically, earthworm cast organic fertilizer is the organic substance that has handled through the earthworm, has better aggregate structure, and its water conservation fertilizer conservation ability is strong, can fully absorb and store the upper strata infiltration water, supplies with the vegetation growth, plays the effect of slow effect release water manure, can reduce the phenomenon of hardening that appears when the extreme arid of soil through sneaking into a small amount of kibbling straw or gardens discarded object organic matter in the water conservation fertilizer conservation layer simultaneously, strengthens the suitability of water conservation fertilizer conservation layer.
In some embodiments of the present invention, the first moisture and fertilizer retaining layer 202 has a thickness of 2-5 cm. The thickness of the second water and fertilizer retaining layer 204 is 2-5 cm. When the vegetation needs high water and nutrient, the thickness of the water and fertilizer retaining layer can be properly increased.
In some embodiments of the invention, the constituent material of the substrate structure layer 203 comprises a vegetation growth substrate.
Specifically, the substrate structure layer 203 is a main space for the growth of the root system of the vegetation, and is also a soil layer for fixing carbon in soil for a long time, and plays a role in supporting and maintaining the growth of the vegetation.
In some embodiments of the invention, the vegetation growth substrate comprises at least one of peat soil, humus soil and silt.
In some embodiments of the present invention, the material of the substrate structure layer 203 further includes an organic additive, and the organic additive includes at least one of coconut coir, straw and organic fertilizer.
In some embodiments of the invention, the matrix structure layer 203 comprises, by weight, 20-25 parts of charcoal soil, 10-15 parts of humus soil, 10-12 parts of sludge, 3-5 parts of coconut coir, 3-5 parts of straw, and 1-3 parts of organic fertilizer.
In some embodiments of the invention, the thickness of the matrix structure layer 203 is 10-40 cm.
Specifically, the thickness of the matrix structure layer may be increased appropriately when the vegetation to be planted is high, and the thickness of the matrix structure layer 203 may be 5-10 cm when the vegetation to be planted is ground cover plants, such as Curculigo latifolia, cynodon dactylon, taiwan grass, etc. When the cultivated vegetation is shrubs, such as camellia, bougainvillea, osmanthus fragrans, etc., the matrix structure layer 203 may be 20-30 cm. When the cultivated vegetation is trees, such as acacia cercis, podocarpus macrophyllus, clausena lansium, etc., the thickness of the matrix structure layer 203 may be 40 cm.
In some embodiments of the present invention, when the drainage condition of the roof is poor or the drainage of the cultivation container is not smooth, a protective layer 201 may be additionally added to the bottom of the soil buffer structure layer 200.
According to a second aspect of the present invention, a method for constructing a roof greening soil buffer structure layer 200 according to any one of the above-mentioned first aspect of the present invention comprises the following steps:
(1) Laying wormcast organic fertilizer on the building roof 400 to form a second water and fertilizer retention layer 204;
(2) A vegetation growth substrate is laid on the second water and fertilizer retention layer 204 to form a substrate structure layer 203;
(3) Laying wormcast organic fertilizer on the substrate structural layer 203 to form a first water and fertilizer conservation layer 202;
(4) At least one of ceramsite and perlite is laid on the first water and fertilizer retaining layer 202 to form a protective layer 201, meanwhile, a matrix structural layer 203 is laid, a pore channel is reserved while the first water and fertilizer retaining layer 202 and the protective layer 201 are laid, non-woven fabrics are laid along the bottom wall and the inner wall of the pore channel, and the pore channel is filled with the ceramsite to form a vertical flow guide channel 300.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. The utility model provides a roof greening soil buffer structure layer which characterized in that: the top-down contains protective layer, first water conservation in proper order protects fertile layer, matrix structural layer and second and protects water and protect fertile layer, still be provided with the water conservancy diversion structure in the roof greening soil buffer structure layer in the vertical direction.
2. The roof greening soil buffer structure layer as claimed in claim 1, wherein: the flow guide structure is a vertical flow guide channel vertically arranged in the roof greening soil buffer structure layer, the top end of the vertical flow guide channel is positioned in the protective layer, and the bottom end of the vertical flow guide channel is positioned in the substrate structure layer.
3. A roof greening soil buffer structure layer as claimed in claim 2, wherein: and ceramic particles are filled in the vertical flow guide channel.
4. The roof greening soil buffer structure layer as claimed in claim 1, wherein: the protective layer is made of at least one of ceramsite and perlite.
5. The roof greening soil buffer structure layer as claimed in claim 1, wherein: the thickness of the protective layer is 1-2 cm.
6. The roof greening soil buffer structure layer as claimed in claim 1, wherein: the first water and fertilizer conservation layer is made of a material comprising wormcast organic fertilizer.
7. The roof greening soil buffer structure layer as claimed in claim 1, wherein: the constituent materials of the substrate structure layer comprise a vegetation growth substrate.
8. The roof greening soil buffer structure layer as claimed in claim 7, wherein: the vegetation growth substrate comprises at least one of peat soil, humus soil and sludge.
9. The roof greening soil buffer structure layer as recited in claim 8, wherein: the matrix structure layer is made of a material which also comprises an organic additive, wherein the organic additive comprises at least one of coconut coir, straw and organic fertilizer.
10. A method of constructing a roof greening soil buffer structure as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:
(1) Laying wormcast organic fertilizer on the roof of the building to form the second water and fertilizer retention layer;
(2) Paving a vegetation growth substrate on the second water and fertilizer retention layer to form the substrate structure layer;
(3) Laying wormcast organic fertilizer on the substrate structural layer to form the first water and fertilizer conservation layer;
(4) At least one of ceramsite and perlite is laid on the first water and fertilizer retention layer to form the protective layer, meanwhile, the matrix structure layer is laid, the first water and fertilizer retention layer and the protective layer are reserved with a pore channel, non-woven fabrics are laid along the bottom wall and the inner wall of the pore channel, and the pore channel is filled with ceramsite to form the vertical flow guide channel.
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