JP2023169596A - Animal damage prevention device and animal damage prevention structure - Google Patents

Abstract

To provide an animal damage prevention technique that effectively prevents wild animals from entering vegetation areas and causing feeding damage, utilizing a simple structure.SOLUTION: An animal damage prevention device according to the present invention is equipped with a planar vegetation mat 30 carrying a plant seed, and a lattice-like slatted panel 20 laminated and laid on the top surface of the vegetation mat 30, the slatted panel 20 having a plurality of openings 23 at the intersection where a plurality of vertical ribs 21 and a plurality of horizontal ribs 22 arranged in parallel at intervals intersect, and the slatted panel 20 forming continuous protection grooves 24 along the longitudinal direction of the vertical ribs 21 between adjacent vertical ribs 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a beast damage prevention device and a beast damage prevention structure that have a function of preventing damage to plants by wild animals such as deer, wild boars, and bears, and an intrusion deterrent function of preventing invasion of wild animals.

On slopes and slopes, greening works are carried out to stabilize the slopes and improve the scenery.
Spraying is widely known as a greening method. In the spraying method, a greening base material consisting of a mixture of soil, compost, plant seeds, etc. is sprayed in layers on slopes, etc., and native species of plants such as grass, clover, and mugwort are planted.
When constructing a greening base material, a net-like material such as a diamond-shaped wire mesh is laid inside or on the top surface of the greening base material to stabilize the slope.

It has been pointed out that wild animals such as serows and Japanese deer invade these vegetation areas and eat up the plants, causing damage and trampling over the vegetation areas.
If feeding damage is left untreated, it will be difficult to restore the natural landscape, and trampling by wild animals can cause soil to wash away and cause slope failure.

As a means for preventing feeding damage by wild animals, for example, it is known to cover the entire vegetation area with a net-like material (Patent Documents 1 to 3).
Patent Document 1 discloses covering with an arch body formed by combining a hard reinforcing material and a soft wire mesh, and Patent Document 2 discloses that a cross-shaped frame is laid on a slope, and the upper surface of this frame is It is disclosed that the wire mesh is laid away from the slope by laying the wire mesh on the slope, and Patent Document 3 discloses that a plurality of net materials formed by bending a band-shaped net into an arch shape are used, and each net material is It is disclosed that both opposite sides of the slope are fixed with fixing pins to cover the slope.

Furthermore, as another means of preventing the intrusion of wild animals, enclosing protected areas with intrusion prevention fences is widely known.
Patent Document 4 discloses an intrusion prevention fence in which a plurality of bare electric wires are additionally installed on a part of the fence main body with a net stretched between the pillars.

Japanese Patent Application Publication No. 2010-213606 Japanese Patent Application Publication No. 2004-73192 Patent No. 5503067 Japanese Patent Application Publication No. 11-206305

Conventional feeding damage prevention techniques have the following problems to be solved.
<1> Although it is possible to expect a certain degree of feeding damage prevention effect by covering the vegetation area with various net-like materials, it is not possible to reliably suppress the invasion of wild animals.
To enhance the effect of preventing feeding damage, it is necessary to separately install an intrusion prevention fence around the vegetation area.
As a result, the facility will be large-scale and construction strikes will be high.
<2> Although the conventional net-like material is placed floating off the ground, the net-like material has a structure that allows bending and elastic deformation.
Therefore, if a wild animal rests on the netting, the netting will sink into the netting, and the plants will be eaten away near the roots, making it impossible to fully demonstrate the anticorrosion effect.

Conventional intrusion prevention fences have the following problems.
<1> Since the intrusion prevention fence consists of many pillars and a large-area mesh material, it not only takes a lot of time and effort to install the intrusion prevention fence, but also the construction cost is very high.
<2> Intrusion prevention fences have a structure that prevents wild animals from entering only by the height of the fence, so if the fence is not high enough or wild animals with high jumping ability such as deer jump over the fence and enter.
Therefore, the effect of preventing intrusion against wild animals is limited.
<3> When installed in a mountainous area, the intrusion prevention fence is likely to be destroyed by falling snow masses, and it takes a lot of effort and cost to repair the fence after the snow melts.

The present invention has been made in view of the above points, and an object of the present invention is to provide a beast damage prevention device and a beast damage prevention structure that can solve the above problems.
<1> With a simple structure, it is possible to prevent wild animals from entering the vegetation area and to prevent feeding damage by wild animals.
<2> Material costs and installation costs can be significantly reduced.
<3> Avoid loss of functionality due to falling snowpack.

The present invention is a beast damage prevention device that is placed on a vegetated area to protect plants in the vegetated area while preventing wild animals from invading the vegetated area, and which carries at least plant seeds. It comprises a planar vegetation base structure and a lattice-like slatted panel laid in a layered manner on the upper surface of the vegetation base structure, and the slatted panel has a plurality of longitudinal ribs arranged in parallel at intervals; The lattice structure includes a plurality of horizontal ribs arranged to intersect with vertical ribs, and has a plurality of openings vertically penetrating the intersections of the vertical ribs and the horizontal ribs, and the vertical ribs adjacent to the drainboard panels are A continuous protective groove is formed between the vertical ribs along the longitudinal direction, and the protective groove and the plurality of openings communicate with each other.
In another aspect of the invention, the horizontal ribs are biased toward the lower side of the vertical ribs.
In another aspect of the invention, the vertical rib has a flat upper end surface and a wavy lower end surface.
In another form of the invention, the slat panel is integrally molded from synthetic resin.
In another embodiment of the present invention, the planar vegetation base structure is either a vegetation mat or a vegetation sheet.
The present invention is a beast damage prevention structure placed on a vegetation area to protect plants in the vegetation area while preventing wild animals from entering the vegetation area, the structure comprising: A planar vegetation base structure is laid over the entire area of the vegetation area using a damage prevention device, and one or more slatted panels are laminated and laid on the top surface of the vegetation base structure, and the vegetation base The structure and the drainboard panel were fixed with fixing pins.
In another embodiment of the present invention, the slatted panel is laid on the upper surface of the vegetation base structure with the protective groove facing upward.
In another embodiment of the present invention, a plurality of slatted panels are laid on the upper surface of the vegetation base structure so that the vertical ribs of adjacent slatted panels are oriented in different directions.

The present invention has at least one of the following effects.
<1> The animal damage prevention device can independently exert the effect of preventing the invasion of wild animals into the vegetation area and the effect of preventing the feeding damage caused by wild animals.
Therefore, there is no need to additionally install a conventional fence to prevent the intrusion of wild animals.
<2> Invasion of wild animals can be effectively prevented by a simple structure in which slatted panels are laminated and laid on the top surface of a vegetation base structure such as a vegetation mat or a vegetation sheet.
<3> In the vegetation area where the animal damage prevention device is installed, it is possible not only to prevent the invasion of wild animals, but also to reliably protect the growth and growth of plants by the total height of the drainboard panel.
Therefore, compared to conventional techniques for preventing feeding damage, the area for preventing feeding damage is increased, and feeding damage can be prevented in almost the entire vegetation area.
<4> Since the greening mat and the drainboard panel that constitute the animal damage prevention device work together to exert a protective function and protect the ground, it is possible to effectively prevent the ground from being trampled by wild animals.
<5> The slatted panel of the animal damage prevention device exerts the effect of guiding snow and prevents the snow from sinking below the slatted panel, so there is no need to worry about deformation or damage of the animal damage prevention device during snow melting. , does not require any special repair or maintenance after snow melts.
<6> Even if a plurality of drainboard panels are laid on the top surface of the vegetation base structure so that the vertical ribs of adjacent drainboard panels are oriented in different directions, free movement of wild animals can be prevented.

A partially cutaway perspective view of the animal damage prevention device according to Example 1 Vertical sectional view of the animal damage prevention device Cross-sectional view of III-III in Figure 2 Floor plan of drainboard panel An explanatory diagram of how to install the animal damage prevention device, (A) is an explanatory diagram of the method of laying the vegetation mat, and (B) is an explanatory diagram of the method of laying the drainboard panel. Vertical cross-sectional view of the animal damage prevention device according to Example 2 A partially broken vertical plan view of a drainboard panel constituting the animal damage prevention device according to Example 3

[Example 1]
<1> Animal damage prevention device To explain with reference to FIG. 1, the animal damage prevention device 10 according to the present invention protects plants within the vegetation area while preventing wild animals from entering the vegetation area (protected area). It is a device for protection.
The animal damage prevention device 10 includes a planar vegetation base structure laid over a vegetation area, and a bendable slatted panel 20 laminated and laid on the top surface of the vegetation base structure.
In this example, a case will be described in which the planar vegetation base structure is a vegetation mat 30.

<2> Drainboard Panel The drainboard panel 20 includes a plurality of vertical ribs 21 arranged in parallel at a predetermined interval, and a plurality of horizontal ribs 22 arranged in parallel with a predetermined interval and arranged to intersect with the vertical ribs 21. A lattice structure comprising:
An opening 23 passing vertically between the ribs 21 and 22 is formed by fixing the intersection of the ribs 21 and 22.
The drainboard panel 20 can be manufactured easily and at low cost by integrally molding it from synthetic resin.

There are no particular restrictions on the overall shape of the drainboard panel 20.
In this example, a configuration in which the drainboard panel 20 has a strip shape will be described, but the planar shape of the drainboard panel 20 may be rectangular or square.

<2.1> Vertical ribs The plate-shaped vertical ribs 21 are used vertically with both end faces facing up and down, and a plurality of vertical ribs 21 are arranged in parallel along the longitudinal direction of the drainboard panel 20. .
The reason why the vertical ribs 21 are used vertically is to ensure a sufficient height for growing plants and to reduce the landing area of wild animals' legs, making it difficult for wild animals to walk.

The total height h of the vertical ribs 21 is appropriately selected depending on the type of plants 40 growing there.
The total height h of the vertical ribs 21 is preferably about 5 to 30 mm, for example.

The plate thickness t of the vertical ribs 21 is set to a size that can ensure sufficient strength to prevent the vertical ribs 21 from being easily crushed when a wild animal rides on the drainboard panel 20.
It is desirable that the plate thickness t of the vertical ribs 21 is, for example, about 0.5 to 7 mm.

It is desirable that the upper end surface 21a of the vertical rib 21 be formed as a smooth surface in order to make it easier for wild animals to slide on their legs.

Although the vertical ribs 21 may be a plate body having a uniform width in the height direction, it is preferable that the vertical ribs 21 have uneven widths in the height direction to impart flexibility to the drainboard panel 20.
In this example, the vertical rib 21 has a configuration in which the lower end surface 21b of the vertical rib 21 is formed as a corrugated surface so that the width of the plate in the height direction is non-uniform.
By giving flexibility to the vertical ribs 21, it is not only possible to wind up the drainboard panel 20 into a roll, but also it is possible to follow the undulations of the laying surface when laying the drainboard panel 20. .

<2.2> Horizontal Ribs The horizontal ribs 22 are spacers that function to keep the distance between adjacent vertical ribs 21 constant.
The horizontal ribs 22 are provided biased to the lower side of the vertical ribs 21 so that the horizontal ribs 22 do not protrude to the upper surface side of the drainboard panel 20.
The reason why the horizontal ribs 22 are provided on the lower side of the vertical ribs 21 is to form the protective grooves 24 on the upper surface side of the drainboard panel 20.
The reason why the protective groove 24 is formed on the upper surface side of the drainboard panel 20 is to prevent the horizontal ribs 22 from becoming a catch element when a wild animal walks on the drainboard panel 20 on the upper surface side of the drainboard panel 20.

<2.3> Openings By providing the horizontal ribs 22 across the lower surface 21b side of the vertical ribs 21, the lower surface 21b side of the drainboard panel 20 has a lattice structure, and a plurality of openings 23 are formed between both ribs 21 and 22. Form.
The opening 23 functions as a vegetation space for the plants 40.
The size of the opening 23 is determined by the distance l ₁ between the vertical ribs 21 and the distance l ₂ between the horizontal ribs 22 .
The dimensions of the opening 23 are preferably about 5 to 60 mm on either the vertical or horizontal sides, for example.

<2.4> Protective Groove As described above, the horizontal ribs 22 are provided offset to the lower side of the vertical ribs 21, and the continuous protective grooves 24 are formed on the upper surface side of the vertical ribs 21.
That is, a protective groove 24 is formed between adjacent vertical ribs 21 in parallel with the vertical ribs 21.
The plurality of protection grooves 24 communicate with the opening 23 and function as a vegetation space for the plants 40.
The groove width of the protective groove 24, which is the interval _l1 between the vertical ribs 21, is set so that the foot (or hoof) and snout of a wild animal cannot fit into it. Wild animals include young animals.
It is determined by the distance l1 between the ribs 21 and the distance l2 between the horizontal ribs 22.
The groove width of the protective groove 24 is preferably 5 to 60 mm.
When the groove width of the protective groove 24 is narrower than 5 mm, the anaerobic effect on wild animals is reduced, and when it exceeds 60 mm, there is a problem that the plants 40 in the protective groove 24 are easily eaten.

<3> Vegetation Mat In this example, a form in which the vegetation base structure is a vegetation mat 30 will be described.
The vegetation mat 30 is a flexible mat-like material having a predetermined thickness.
The vegetation mat 30 illustrated in FIGS. 1 and 2 includes a mat base material 31 having upper and lower surfaces, a plurality of vegetation bags 32 arranged in a row at intervals on the upper surface of the mat base material 31, and a plurality of vegetation bags 32 placed in the mat base material 31. A greening base material 33 is provided.
The vegetation mat 30 is not limited to the structure illustrated in FIGS. 1 and 2, and any known vegetation mat capable of growing plants can be used.

<3.1> Material The mat base material 31 is a long strip-shaped body that can be wound into a roll.
The mat base material 31 and the vegetation bag 32 are made of known chemical fibers such as polyethylene or natural fibers such as jute fibers, coconut fibers, and straw.
The materials of the mat base material 31 and the vegetation bag 32 may be a combination of homogeneous materials or a combination of different materials.
It is desirable to use biodegradable materials for the mat base material 31 and the vegetation bag 32.

<3.2> Vegetation Bag The vegetation bag 32 is an independent elongated cylindrical bag, and is arranged in a direction perpendicular to the longitudinal direction of the mat base material 31 (transverse direction).
The installation interval of the vegetation bags 32 along the longitudinal direction of the mat base material 31 can be selected as appropriate.

<3.3> Greening base material The greening base material 32 contains at least soil, plant seeds, and fertilizer, and additionally contains a water retaining material, soil improvement material, etc. as necessary. The greening substrate 32 only needs to contain at least plant seeds.
The plant seeds may be either herbaceous or woody. Seeds of plants and stinging plants that emit odors that are aversive to wild animals may also be mixed.
These mixtures are stored and sealed in the vegetation bag 32 in advance.

<4> Relationship between the drainboard panel and the vegetation mat In this example, a configuration in which the drainboard panel 20 and the vegetation mat 30 are used separately will be explained. It may also be integrated using

[How to install a beast damage prevention device]
A method for installing the animal damage prevention device 10 will be explained with reference to FIG.

<1> Installation target of the animal damage prevention device In this example, a case will be described in which the ground G to be covered with vegetation is a slope with a slope, but the ground G to be covered by vegetation may be flat ground.

<2> Laying of vegetation mat (Figure 5 (A))
A vegetation mat 30 is laid over the vegetation range.
At this time, the vegetation bags 32 of the vegetation mat 30 are arranged in a direction perpendicular to the direction of inclination of the slope.

<3> Laying the drainboard panels (Figure 5 (B))
The drainboard panel 20 is placed and laid on the upper surface of the vegetation mat 30.
At this time, the vertical ribs 31 constituting the drainboard panel 20 are laid along the inclination direction of the ground G.
When a plurality of drainboard panels 20 are installed in parallel, they are laid so that the vertical ribs 21 of each drainboard panel 20 are parallel to each other.
A fixing pin 25 is driven from the upper surface side of the drainboard panel 20 to fix the drainboard panel 20 and the vegetation mat 30 to the ground G.

In this way, the animal damage prevention device 10 can be installed with a simple operation of laying and fixing the vegetation mat 30 and the drainboard panel 20 over the vegetation range.

[Multiple functions of animal damage prevention device]
The operation of the animal damage prevention device 10 will be explained with reference to FIGS. 2, 3, etc.

<1> Preventing wild animal intrusion (beast control effect)
A plurality of narrow vertical ribs 21 are arranged in parallel on the surface layer of the drainboard panel 20 laid over the entire surface of the vegetation area.
Therefore, when a wild animal tries to stand on the drainboard panel 20 located above the animal damage prevention device 10, the narrow vertical ribs 21 dig into the soles of the legs, giving the animal a sense of discomfort.
When the wild animal is an ungulate, if the vertical ribs 21 are caught between the main hoof and the auxiliary hoof, the animal will feel uncomfortable on the soles of its legs, making it difficult to enter the vegetation area.

In particular, when installing the animal damage prevention device 10 on a slope, if the vertical ribs 21 of the upper drainboard panel 20 are arranged along the slope direction, the legs of wild animals may slip on the vertical ribs 21. , wild animals cannot move freely.
This makes it difficult for wild animals to climb over the slope.

Wild animals repeatedly enter the drainboard panel 20 several times, but each time they feel discomfort, the learning effect of the discomfort prevents the wild animals from entering the vegetation area.

As explained above, although the structure is simple and consists of laminating and installing the vegetation mat 30 and the drainboard panel 20 on the ground G, the upper surface of the drainboard panel 20 actively gives discomfort to the soles of the legs of wild animals. It can effectively prevent wild animals from entering the vegetated area by sliding the legs of wild animals.

Furthermore, even if wild animals enter a part of the vegetation area, the greening mat 30 and the drainboard panel 20 that constitute the animal damage prevention device 10 work together to exert a protective function and protect the ground G. It is also possible to effectively prevent the driver from stepping on the G.

<2> Preventing feeding damage (anticorrosion effect)
Plants 40 germinate from the vegetation mat 30 constituting the animal damage prevention device 10.
The germinated plants 40 break through the vegetation bag 32 and continue to grow.
Plants 40 extend through openings 23 in slat panel 20 and into protective grooves 24 .
Since the vertical ribs 21 of the drainboard panel 20 function as a protection member for the plants 40, wild animals cannot eat the plants 40 located within the protection grooves 24.
The animal damage prevention device 10 of the present invention exhibits an anti-corrosion effect while also exhibiting an effect of preventing the invasion of wild animals.

The overgrown plants 40 protrude upward from the upper surface of the drainboard panel 20 and become grazing targets for wild animals, but only in a part of the vegetation area.
Since the animal damage prevention device 10 of the present invention has both an anti-corrosion effect and an intrusion prevention effect from wild animals, only the periphery of the vegetation area is grazed by wild animals, and most of the plants in the vegetation area are grazed by wild animals. Plants 40 can grow until the animal damage prevention device 10 is hidden.
Furthermore, even if the plant 40 that has grown beyond the height of the drainboard panel 20 is eaten by a wild animal, the plant 40 will not be eaten from the roots, and only the height of the drainboard panel 20 will remain.
Therefore, compared to conventional techniques for preventing feeding damage, the area for preventing feeding damage is increased, and feeding damage can be prevented in almost the entire vegetation area.
In addition, since the plants 40 can grow even if some of them are eaten by wild animals, the vegetation state can be maintained for a long period of time even at the periphery of the vegetation area.

<3> Influence of snowfall If the animal damage prevention device 10 is installed in a mountainous area, the animal damage prevention device 10 will be buried in snow during the winter.
Since the animal damage prevention device 10 is simply installed at a low position along the ground G, a large snow load (or snow pressure) toward the slope valley side is not applied to the animal damage prevention device 10.
Therefore, since the animal damage prevention device 10 has the durability to maintain the state where it is laid on the ground G, there is no fear that the animal damage prevention device 10 will be crushed by the snow load.

Also, when snow melts, snowpack slides down the slope.
In conventional anti-corrosion technology in which a net is placed floating above a slope, snow masses penetrate the underside of the net and peel off the net, destroying it.

In contrast, in the animal damage prevention device 10 of the present invention, a large number of vertical ribs 21 arranged in parallel on the slatted panel 20 laid on the top surface of the vegetation mat 30 guide the snowpack toward the valley side while preventing the snowpack from penetrating. .
Therefore, there is no fear that the drainboard panel 20 will be peeled off from the ground G and deformed or damaged due to snowfall sliding down.
The animal damage prevention device 10 does not require any special repair or maintenance after snow melts.

<4>Drainage effect (erosion prevention effect)
To explain with reference to FIG. 3, when rain falls on the animal damage prevention device 10 in which the upper surface of the vegetation mat 30 is covered with the drainboard panel 20, while the rainwater passes through the drainboard panel 20 through the opening 23, it does not completely penetrate. A part of the rainwater flows down along the upper end surface 21a and side surface 21c of the vertical rib 21.
Therefore, even if the material of the vegetation mat 30 is damaged due to ultraviolet deterioration or the like, erosion of the greening base material 33 and the ground G can be effectively suppressed, so that the animal damage prevention device 10 can be prevented from losing its supporting ground without losing its support ground. can be maintained for a long period of time.

[Example 2]
Other embodiments will be described below, but in the description, the same parts as in the above-mentioned embodiments will be given the same reference numerals, and detailed explanation thereof will be omitted.

<1> Vegetation Sheet In Example 1, a case has been described in which the vegetation base structure is the vegetation mat 30, but it is also possible to apply the vegetation sheet 35 to the vegetation base structure.
That is, in this example, the animal damage prevention device 10 is configured by the drainboard panel 20 and the vegetation sheet 35.

Explaining with reference to FIG. 6, the vegetation sheet 35 is composed of a plurality of sheet-like materials made of non-woven fabric, soil improvement sheet, etc., and it is sufficient that at least part of the sheet-like materials supports at least plant seeds.
The vegetation sheet 35 contains various vegetation materials such as fertilizers as needed in addition to plant seeds.

As shown in FIG. 6, the drainboard panel 20 and the vegetation sheet 35 may be integrated in advance using a connecting material 36 such as a ring or a string material, but after the vegetation sheet 35 is laid in advance, the drainboard panel 20 and the vegetation sheet 35 may be integrated. may be laid on the upper surface of the vegetation sheet 35.

<2> Usage method and effects of the animal damage prevention device The usage method and effects of the animal damage prevention device 10 in this example are the same as in the first embodiment described above.
The vegetation mat 30 or the vegetation sheet 35 may be used depending on the vegetation environment, vegetation area, etc.

[Example 3]
<1> Arrangement form of drainboard panels Referring to FIG. 7, a form in which the longitudinal ribs 21 of adjacent drainboard panels 20 are laid with different orientations so that they are in an orthogonal relationship or an intersecting relationship will be described.

In this example as well, the drainboard panel 20 is laid on the top surface of a green base structure (vegetation mat 30 or vegetation sheet 35), not shown, as in the previously described embodiments.

Although FIG. 7 shows an embodiment in which the planar shape of the drainboard panel 20 constituting the animal damage prevention device 10 is square, the planar shape of the drainboard panel 20 may be rectangular.
Further, this example can be applied even if the vegetation area is a flat land or a slope.

<2> Effects of this Example The effects of the animal damage prevention device 10 in this example are the same as those of Examples 1 and 2 described above.
In this example, when a wild animal tries to freely walk around on the upper surface of the plurality of drainboard panels 20, the direction of the vertical ribs 21 changes many times, causing discomfort to the soles of the legs and hindering the freedom of the wild animal. Makes walking difficult.
In particular, when a wild animal tries to advance in the longitudinal direction of the vertical rib 21, the legs of the wild animal become slippery, making it even more difficult for the wild animal to walk freely.
Therefore, in this example as well, it is difficult for wild animals to invade the vegetation area.

10...Animal damage prevention device 20...Drain board panel 21...Vertical rib 21a...Upper end surface of vertical rib 21b...Lower end surface of vertical rib 21c...Side surface 22 of vertical rib ... Horizontal rib 23 ... Opening 24 ... Protection groove 30 ... Greening mat 31 ... Mat base material 32 ... Vegetation bag 33 ... Greening base material 40 ····plant

Claims (8)

A beast damage prevention device placed on a vegetated area to protect plants within the vegetated area while preventing wild animals from entering the vegetated area,
a planar vegetation base structure carrying at least plant seeds;
comprising a lattice-shaped slatted panel laminated and laid on the upper surface of the vegetation base structure,
The drainboard panel includes a plurality of vertical ribs arranged in parallel at intervals, and a plurality of horizontal ribs arranged to intersect with the vertical ribs, and a plurality of horizontal ribs vertically penetrate through the intersection of the vertical ribs and the horizontal ribs. is a lattice structure having an opening of
The drainboard panel forms a continuous protective groove between adjacent vertical ribs along the longitudinal direction of the vertical ribs,
The protective groove and the plurality of openings are in communication with each other,
Animal damage prevention device. 2. The animal damage prevention device according to claim 1, wherein the horizontal ribs are biased toward the lower side of the vertical ribs. The animal damage prevention device according to claim 1, wherein the vertical rib has a flat upper end surface and a wavy lower end surface. The animal damage prevention device according to claim 1, wherein the drainboard panel is integrally molded from synthetic resin. The animal damage prevention device according to claim 1, wherein the planar vegetation base structure is either a vegetation mat or a vegetation sheet. A beast damage prevention structure placed over a vegetation area to protect plants within the vegetation area while preventing wild animals from entering the vegetation area,
Using the animal damage prevention device according to claim 1,
A planar vegetation base structure is laid across the entire vegetation area,
Laminating and laying one or more slatted panels on the top surface of the vegetation base structure,
The vegetation base structure and the drainboard panel are fixed with fixing pins,
Animal damage prevention structure. 7. The animal damage prevention structure according to claim 6, wherein the drainboard panel is laid on the upper surface of the vegetation base structure with the protective groove facing upward. The animal damage prevention structure according to claim 6, characterized in that a plurality of drainboard panels are laid on the upper surface of the vegetation base structure so that the vertical ribs of adjacent drainboard panels are oriented in different directions.

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