JP2022127606A - Method for preventing little tern from coming flying - Google Patents

Abstract

To provide a method for preventing little terns from coming flying that can efficiently and simply prevent little terns from coming flying.SOLUTION: A method for preventing little terns from coming flying prevents the little terns from coming flying by forming, on a ground surface of a preventing coming flying zone 1, one or more camouflaged grass field zones 2, 2 with string-shaped or tape-shaped green field camouflaged materials 3, 3 laid along the ground surface of the preventing coming flying zone 1 so as to camouflage the preventing coming flying zone 1 with the grass field.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a method for preventing little terns, which are designated as an internationally endangered species of wild fauna and flora, from flying into their breeding grounds.

The little tern is a migratory bird designated as an endangered species in Japan and designated as an internationally endangered species of wild fauna and flora in bilateral migratory bird treaties between Japan and Russia, Japan and the United States, Japan and China, and Japan and Australia.

It is known that the Little Tern prefers riverbeds with low vegetation cover, gravel areas of sandbanks, and sandy beaches along the coast as breeding grounds, and migrates to Japan in spring to nest there.

On the other hand, the Wildlife Protection Act prohibits little terns from interfering with breeding activities and harming eggs and chicks. It is an issue in construction supervision to take measures to prevent flying debris.

Therefore, conventionally, measures such as a method of artificially applying green paint to the ground surface to camouflage grassland, spraying asphalt emulsion, installing mimetic objects such as anti-bird nets, crow models, streamers, etc. It is implemented depending on the site (see, for example, Non-Patent Document 1).

"Guidelines for Conservation and Consideration of Little Tern Breeding Sites", Wildlife Division, Nature Conservation Bureau, Ministry of the Environment, March 2014

However, with the above-described conventional technology, the work of applying green paint to the ground surface and the work of spraying black asphalt emulsion take time and effort, and when the area is used, it has to be removed. was there.

In addition, mimetic substances that birds avoid have the potential to be halved once the birds become accustomed to them.

SUMMARY OF THE INVENTION In view of such conventional problems, the present invention has been made for the purpose of providing a method for preventing flying little terns, which can simply and efficiently prevent flying little terns.

The feature of the invention described in claim 1 for solving the conventional problems as described above is to form one or more camouflaged grass areas on the ground surface of the flying prevention area and camouflage the flying prevention area as grass. It is in.

The feature of the invention according to claim 2 is that, in addition to the configuration of claim 1, the camouflaged grass area is formed by grass-colored string-like or tape-like camouflage grassland materials laid along the ground surface of the flying prevention area. It has to be configured.

The feature of the invention according to claim 3 is that, in addition to the configuration of claim 2, in the camouflaged grass area, one end of a grass-colored string-like or tape-like grass camouflaging material is connected to the grass camouflage material. be.

The feature of the invention according to claim 4 is that, in addition to the configuration according to any one of claims 1 to 3, the camouflaged grass area has a plurality of drain materials whose upper ends are at least grass-colored and which are attached to the flying prevention area. It is buried in the ground in a state of protruding from the ground surface, and camouflaged as grassland by the plurality of drain materials.

The feature of the invention according to claim 5 is that, in addition to the configuration of any one of claims 1 to 3, a net-like or mat-like laying material for grassland mimicry is laid in the camouflaged grass area.

The feature of the invention according to claim 6 is that, in addition to the configuration of any one of claims 1 to 5, an installation for camouflaging grass having one or a plurality of three-dimensional portions is installed in the camouflaging grass area.

The feature of the invention according to claim 7 is that, in addition to the configuration of claim 6, the installation object for camouflaging grassland has an insertion part in the upper surface part, and the insertion part has grass, trees, or an imitation of grass or trees. It's about inserting the product.

The feature of the invention according to claim 8 resides in that, in addition to the configuration of claim 6 or 7, the outer surface of the installation for camouflaging grassland is painted in grass color or a camouflaging grass-colored tape is attached to the outer surface. .

The feature of the invention according to claim 9 is that, in addition to the configuration according to any one of claims 1 to 8, the camouflaged grass area is provided with mimics that mimic birds, beasts, or objects that little terns avoid.

A feature of the invention according to claim 10 is that, in addition to the configuration of claim 9, the mimetic object is a floating body or a kite.

The method for preventing flying little terns according to the present invention can easily prevent flying little terns at a construction site or the like by providing the configuration of claim 1 .

Further, in the present invention, by providing the configuration of claim 2, it is possible to camouflage the grassland easily.

Furthermore, in the present invention, by providing the configuration of claim 3, the grass camouflage material is shaken by the wind, and can be preferably camouflaged as grass to form a three-dimensional camouflaged grass area.

Furthermore, in the present invention, by having the configuration of claim 4, it is possible to effectively utilize drain materials such as plastic board drain materials used for ground improvement and liquefaction prevention measures in the flying prevention area, and ground improvement work etc. It is possible to camouflage the site to be a grassland as a camouflaged grass area.

Moreover, in the present invention, by providing the configuration of claim 5, the camouflaged grassland can be preferably camouflaged.

Further, in the present invention, by providing the configuration of claim 6, the camouflaged grass area can be formed three-dimensionally.

In addition, in the present invention, by providing the configurations of claims 7 and 8, it is possible to camouflage the installation for camouflaging grassland to a state closer to a real herb community or the like.

Furthermore, in the present invention, by providing the configurations of claims 9 and 10, it is possible to effectively prevent little terns from flying.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows an example of the embodiment of the flying prevention method of the little tern which concerns on this invention. FIG. 2 is an enlarged perspective view showing a camouflaged grass area in FIG. 1; (a) is a perspective view showing the installation object for grassland camouflage same as the above, (b) is a perspective view which shows an example of the usage condition of the installation object for grassland camouflage. FIG. 10 is an enlarged perspective view showing another example of the camouflaged grass area of the method for preventing flying little terns according to the present invention. Fig. 3 is a partially broken enlarged perspective view showing an example of the same drain material.

Next, an embodiment of the method for preventing flying little terns according to the present invention will be described based on the examples shown in FIGS. 1 to 3. FIG. In addition, the code|symbol 1 in a figure is a flying prevention area, such as a construction site.

Flying prevention area 1 is a construction site, etc. before construction or during construction that is composed of sand and gravel with a low vegetation coverage rate, and is an area that requires measures to prevent flying terns from the viewpoint of construction management so as not to become nesting grounds for little terns. It's becoming

In order to prevent little terns from flying into this flying prevention area 1, one or more camouflaged grass areas 2 are formed on the ground surface of the flying prevention area 1, and the flying prevention area 1 is turned into a grassland unsuitable for breeding grounds for little terns. By impersonating.

Flying prevention area 1 refers to a grassy area where little terns do not actually fly, and considers the area, topography, and other conditions of flying prevention area 1, and the area and shape of each camouflaged grass area 2 The interval between the grass areas 2 and 2 is set.

As shown in FIG. 2, the camouflaged grass area 2 is composed of grass-colored string-like or tape-like camouflage grassland materials 3, 3, . It is surrounded by grass camouflage materials 3, 3, . . .

The grass camouflage materials 3, 3, . ing.

The camouflaged grassland materials 3, 3, . . . , although not particularly shown, may be laid not only in the outline but also in a plurality in the camouflaged grassland 2, and may be laid in any vertical, horizontal, or oblique direction.

Moreover, the grassland camouflage members 3, 3, .

One ends of grass-colored string-like or tape-like grass camouflage materials 5, 5 are connected to the grass camouflage materials 3, 3 at intervals in the longitudinal direction. It can be camouflaged to look like real grass by rolling upwards.

The grass camouflage materials 3, 3 and the grass camouflage materials 5, 5 are composed of strings or tapes having light weight and flexibility. desirable.

Although not shown, the grass camouflage materials 5, 5 are formed by connecting one ends of a plurality of cord-like or tape-like foliage camouflage materials made of the same material as the grass camouflage materials 5, 5, etc. It can be disguised as grass that is close to the real thing.

In addition, in the camouflaged grass area 2, installation objects 6, 6 for camouflaging the grass area are installed along the outline, so that camouflaging can be performed three-dimensionally. It should be noted that the installation positions of the camouflaged grasslands 6, 6, . . .

The installations 6, 6 ... for camouflaging grass are provided with a three-dimensional part 6a formed in the shape of a triangular pyramid or the like. A camouflaging tape 7 is attached. The shape of the three-dimensional portion 6a is not limited to a triangular pyramid, and may be any shape.

Further, the installation objects 6, 6 for grassland camouflage are not limited to those placed on the ground surface as in the above-described embodiment. may be installed by burying the lower part in the ground with the upper end protruding from the ground surface, and the part protruding from the ground surface may be the three-dimensional part.

In this embodiment, the grass color is not only the JIS color standard "dark yellow green", but also the color that changes with the seasons, such as grass color, bright green color, and brown when the grass is dry. Shall include a color similar to the color of the grass around the time of interest.

An inserting portion 6b is provided on the upper surface of the three-dimensional portion 6a, and grass, a tree, or an imitation of grass or a tree 8 can be inserted into the inserting portion 6b. Further, a mounting bar 10 for mounting a mimetic object 9, which will be described later, may be inserted into the insertion portion 6b.

Incidentally, green pylons available on the market can be used for the installations 6, 6, . . . for camouflaging grass. Also, green pylons may be used as they are, or may be partially colored in grass color.

Furthermore, in the camouflaged grass area 2, it is desirable to install mimics 9 that mimic animals or objects that little terns avoid.

For the mimic 9, for example, a kite imitating a hawk, which is a natural enemy of a little tern, a floating body imitating a crow, a windsock, or the like is used.

Each mimetic object 9 is attached to a mounting rod 10, grassland camouflage materials 3, 3, etc., which are inserted into the insertion portions 6b of the grassland camouflage installations 6, 6, . . . It is designed to operate by being attached and fanned by the wind.

In the camouflaged grass area 2, although not shown, a grass-colored net-like or mat-like laying material for grassland mimicry may be laid. When looking down on the grass area 2, it becomes easier to see it as a grassland.

The method for preventing little terns from flying, which is configured in this manner, is simple by installing string or tape-like grass disguise materials 3, 3, grass disguise materials 5, 5, and grass disguise installations 6, 6, and the like. In addition, the grass can be camouflaged in a short period of time, and one or a plurality of camouflaged grass areas 2 can be efficiently provided in the flying prevention area 1. - 特許庁

In addition, the camouflaged grass area 2 can be easily removed, and a plurality of camouflaged grass areas 2 installed along with the progress of construction work can be partially removed. Furthermore, the camouflaged grass materials 3, 3, . . . can be easily replaced even if they are damaged by strong winds or the like.

Therefore, in this flying prevention area 1, it is possible to make the little tern mistakenly think that the flying prevention area 1 is grassland, and prevent the little tern from flying and nesting, so that construction work can be carried out without stopping. can.

In the above embodiment, the camouflaged grass area 2 is formed in a rectangular shape.

Further, aspects of the present invention are not limited to the above-described embodiments, and for example, as shown in FIGS. The camouflaged grass area 2 may be camouflaged as a grassland by the plurality of drain members 20, 20, . . . It should be noted that the same reference numerals are assigned to the same configurations as in the above-described embodiment, and the description thereof will be omitted.

As the drain members 20, 20, for example, a plastic board drain member as shown in FIG. 5 is used. Equipped with water-permeable filters 24, 24 covering both front and back surfaces, the water-permeable filters 24, 24 are fixed to the front and back surfaces of the core body 23, respectively, and the whole forms a flexible thin sheet shape.

The drain materials 20, 20 are not limited to the plastic board drain material shown in FIG. A chemical drain may be used.

The core body 23 is made of synthetic resin and includes a plurality of vertical wall members 23a, 23a, . The horizontal wall members 23b are arranged in a zigzag pattern in cross section, so that shallow water passage grooves 21 and deep water passage grooves 22 are alternately formed on the front and back sides of the core body 23, respectively.

The form of the core body 23 is not limited to the above embodiment, and may be, for example, a corrugated cross section.

The synthetic resin constituting the core 23 is a grass-colored resin containing a grass-colored coloring agent, or the surface of the core 23 is coated with a grass-colored paint so that the entire core 23 is formed in grass-colored. ing.

The water-permeable filters 24, 24 are formed in the form of sheets having water-permeability by using a non-woven fabric made of polyester-based synthetic fibers.

The polyester-based synthetic fibers constituting the water-permeable filters 24, 24 are formed of a resin containing a grass-colored coloring agent, or the surfaces of the synthetic fibers are colored grass-colored, and the water-permeable filters 24, 24 as a whole are grass-colored. is formed in

The grass color of the core body 23 and the water-permeable filters 24, 24 constituting the drain materials 20, 20 is not limited to the JIS color standard "dull yellowish green", but also includes grass color, bright green color, and grass color. Colors that change with the seasons, such as the brown color when it is dried, colors similar to the color of grass around the time of installation, and green colors that can be formed by other resins. shall include

Further, in the above-described embodiment, the case where the entire core body 23 and the water-permeable filter 24 are formed in grass color has been described, but only the portions of the core body 23 and water-permeable filter 24 protruding from the ground surface are formed in grass color or colored. You may

Furthermore, in the above-described embodiment, both the core 23 and the water-permeable filters 24, 24 are grass-colored, but only the water-permeable filters 24, 24 covering the surface of the core 23 may be grass-colored.

As shown in FIG. 4, the drain members 20, 20, . It is buried in the ground improvement target layer 25 such as soft ground in a state of being stretched, and is used for ground improvement and liquefaction prevention measures. In the drawing, reference numeral 26 denotes an upper layer of the ground, and reference numeral 27 denotes an impermeable layer under the soil improvement target layer 25 . In addition, the drain materials 20, 20, .

On the other hand, the drain members 20, 20... have grass-colored at least upper ends and protrude from the ground surface by a certain length (100 mm to 1000 mm). The upper ends of the more protruding drain members 20, 20 appear to be covered with a plurality of grasses, and the area where the plurality of drain members 20, 20 are installed can be camouflaged as a grass area as a camouflaged grass area 2. can.

In addition, since the upper ends of the flexible drain members 20, 20, . It makes it look more like grass.

In addition, as shown in FIG. 4, these drain materials 20, 20, . You can get close to grass. Alternatively, the camouflaged grass area 2 may be composed only of the drain materials 20, 20, . . . .

1 flying prevention area 2 camouflaged grass area 3 grassland camouflage material 4 fixing member 5 grass camouflage material 6 installation for grassland camouflage 7 tape 8 imitation 9 mimic 10 mounting rod 11 mounting string 20 drain material 21 shallow water groove 22 Groove for deep water passage 23 Core material 24 Permeable filter 25 Ground improvement target layer 26 Upper layer 27 Impermeable layer

Claims (10)

A method for preventing little terns from flying, characterized by forming one or more camouflaged grass areas on the ground surface of a flying-prevented area, and disguising the flying-prevented area as grassland. 2. The method for preventing little terns from flying according to claim 1, wherein the camouflaged grass area is composed of a grass-colored cord-like or tape-like camouflage material laid along the ground surface of the flying-prevented area. 3. The method for preventing little terns from flying according to claim 2, wherein in the camouflaged grass area, one end of a grass-colored string-like or tape-like grass camouflaging material is connected to the camouflaging grass material. In the camouflaged grass area, a plurality of drain materials having at least grass-colored upper ends are buried in the ground with the upper ends protruding from the ground surface of the flying prevention area, and the plurality of drain materials are camouflaged as a grass area. The method for preventing little terns from flying according to any one of claims 1 to 3. The method for preventing little terns from flying according to any one of claims 1 to 3, wherein a net-like or mat-like laying material for grassland mimicry is laid in the camouflaged grass area. The method for preventing little terns from flying according to any one of claims 1 to 5, wherein an installation for camouflaging grass having one or more three-dimensional portions is installed in the camouflaging grass area. 7. The method for preventing little terns from flying according to claim 6, wherein the installed object for camouflaging grass has an inserting portion on the upper surface thereof, and grass, a tree, or an imitation of grass or a tree is inserted into the inserting portion. 8. The method for preventing little terns from flying according to claim 6 or 7, wherein the outer surface of said installation for camouflaging grassland is painted in grass color or tape for camouflage is attached to the outer surface. The method for preventing little terns from flying according to any one of claims 1 to 8, wherein in the camouflaged grass area, a mimetic object that mimics a bird, beast, or object that the little tern avoids is installed. 10. The method for preventing little terns from flying according to claim 9, wherein the mimetic is a floating body or a kite.

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