JP2002070021A - Greening method of slope face - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a greening method of a slope face for breeding strong trees by stably sowing seeds in substantially natural conditions. SOLUTION: Biodegradable enclosure frame 3 raising a wall 5 projecting a fixing projected side 6 corresponding to the slope inclination to the lower edge section in the shape of an enclosure opened to the upper side in the direction of the slope inclination and biodegradable fixing piles 8 fixing the enclosure frames 3 to the slope are used, the enclosure frames 3, 3, etc., are set on the greening slope face 1 at regular intervals, seed or soil containing the seed is kept in the enclosure frames 3, 3, etc., and the seed is stably sowed in the greening slope face 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope greening method for greening a slope where trees have been cut down mainly due to forest development.

[0002]

2. Description of the Related Art Conventionally, in a case where a road is constructed in the middle of a mountain, when a forest in the area is cut down to form a bare slope, the slope is prevented from falling due to rain or the like. Vegetation is carried out to recover and rehabilitate felled forests.

[0005] However, seedlings grow to some extent and if they are not sufficiently rooted, they are washed away by rain or the like, and seeds and young seedlings cannot stay on the slope. Therefore, for example, a method of raising seedlings in other places and transplanting the seedlings to a slope to be greened, a method of laying concrete vegetation blocks on the slope to be greened, and vegetating in the enclosed area are widely performed. .

[0004]

However, according to the above-mentioned conventional techniques, the seedlings raised in other places are not compatible with the conventional soil on the slope to be replanted because the seedlings are transplanted in other places. There is a problem that growth is poor and weak.In addition, when concrete vegetation blocks and metal anchors for fixing vegetation blocks are used, vegetation blocks and Anchors remain, which has a considerable effect on the environment, hinders elongation of the roots, and is a hindrance when performing weeds, etc., which is a danger.

[0005] It is most preferable to revegetate the slope with a native species that is compatible with the native soil on the slope. However, the seeds of the native species are naturally settled on the slope and cultivated by rain or the like. It is difficult because it is washed away, and it naturally invades the greening target slope from the so-called secondary forest remaining above the slope,
At present, it takes 20 to 30 years to settle.

The present invention has been made in view of the circumstances of the related art, and has as its object to provide a slope revegetation method that suitably performs revegetation in a state close to nature.

[0007]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A biodegradable fence that can be raised into a fence in which a wall protruding from the lower edge and having a fixing ridge protruding in accordance with the slope angle of the slope is opened upward in the slope inclining direction; Using a fixing pile of biodegradable substances to be fixed to the slope, the enclosures are installed at predetermined intervals on the slope to be greened, and seeds or soil containing seeds is fastened to each of the enclosures, and the That is, the seeds are settled on the slope.

[0008] The seeds of the native species or the soil containing the seeds are sprayed on the slope to be greened, the seeds of the native species are retained in the surrounding frame, and the seeds of the native species are fixed on the slope to be greened. It is preferable that the surrounding frame is provided with a vegetation base material which is solidified in a porous state mainly of an organic fiber material and mixed with a fertilizer.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a slope greening method according to the present invention will be described with reference to FIGS.

[0010] In the figure, 1 is a slope to be greened, 2 is a secondary forest, and 3 is an enclosure.

As shown in FIG. 4, the surrounding frame 3 is formed of a biodegradable material mainly composed of a lactic acid-based polymer, and the wall 5 and the lower edge of the wall 5 are adjusted to the inclination angle of the slope. , And fixing holes 7, 7... Formed in the fixing protrusion 6, and are fixed to the slope 1 to be greened by the fixing stake 8. ing.

The wall body 5 integrally includes a flat central wall plate 5a and side wall plates 5b, 5b which are bent at right angles from both side edges of the central wall plate 5a toward the rear direction.
By molding the lower edge in accordance with the inclination angle of the slope 1 to be greened, the wall body 5 rises and is installed in an enclosure shape that opens upward in the inclination direction of the slope.

As shown in FIG. 7, the surrounding frame 3 holds the wall body 9 on the upper side in the inclination direction of the slope so that the plate-like side walls 9a, 9a are substantially V-shaped when viewed from above. It may be formed by standing up in an open enclosure shape.
Any shape may be used as long as the seed or the soil containing the seed can be retained, such as a wall formed so as to have a substantially U shape when viewed from above.

The fixing pile 8 is formed of a biodegradable material mainly composed of a lactic acid-based polymer similarly to the surrounding frame 3, and is fixed to the pile main body 10 which is driven into the slope 1 to be greened through the fixing hole 7. Holder 1 for holding projecting piece 6 against slope 1
1 is provided.

The pile main body 10 is shaped like a bar having a pointed tip and a cross-shaped cross section, and is provided with a retaining portion 10a which is engaged with the driven soil slightly above the tip.

The holding portion 11 is formed integrally with the upper end of the pile main body 10 and has an outer shape larger than the fixing hole 7, and the fixing projection 6 is pressed against the slope 1 from the lower surface thereof.

In the above-mentioned surrounding frame 3 and fixing pile 8,
Although the case of using a biodegradable material mainly composed of a lactic acid-based polymer has been described, other biodegradable materials such as paper may be used.

Next, a method of greening the slope 1 by using the surrounding frame 3 and the fixing stake 8 configured as described above will be described.

First, as shown in FIG. 1, a part of a mountain forest is cut down, and a so-called secondary forest 2 composed of trees of native species is provided at the top of the mountain.
Are left, as shown in FIG.
Are arranged at predetermined intervals, and are fixed to the slope 1 to be greened using the fixing pile 8. Then, a vegetation base material 12 which is solidified in a porous state mainly of an organic fiber material and mixed with a fertilizer is placed in the fixing frame 3.

In this way, seeds of native species are transported from the secondary forest 2 to the slope 1 to be greened, for example, by rain, wind, birds, small animals, etc., and the transported seeds are placed in the enclosure 3. In this case, the seeds are received by the surrounding frame 3 and are not washed away by rain or the like, and the seeds settle on the slope 1 to be greened.

In addition, the seeds 2 settled on the slope 1 to be greened
After about three years, the nutrients from the vegetation base material 4 are also absorbed and grow into seedlings, and the seedlings are sufficiently rooted on the slope, and are not easily washed away by rain or the like. At that time, the surrounding frame 3 and the fixing pile 8 made of the biodegradable material are corroded and decomposed, and are returned to the soil.

Next, as shown in FIG. 9, unlike the above case, when the entire forest is cut down and there is no so-called secondary forest above the slope 1 to be greened, the greening is performed in the same manner as described above. The surrounding frames 3 are arranged at predetermined intervals on the target slope 1 and fixed,
After placing the vegetation base material 12 in the surrounding frame 3, the topsoil 13 generated when the slope 1 for greening is broken down is scattered over the slope 1 for greening.

By doing so, the topsoil 13 sufficiently contains the seeds of the plants that lived there before cutting, so that the soil containing the native seeds remains in the surrounding frame 3. Thus, the native seeds settle on the slope 1 to be greened. In the same manner as in the above-described embodiment, the seedlings are sufficiently rooted on the slope in two to three years. At that time, the surrounding frame 3 and the fixing pile 8 are decomposed by corrosion and returned to the soil.

Even if the secondary forest 2 remains, the topsoil 13 may be sprayed on the slope 1 as described above, or other seeds, fertilizers, etc. may be sprayed to remove those materials. You may make it fix to a surrounding frame.

[0025]

According to the present invention, a biodegradable fence frame is provided in which a wall having a fixing ridge protruding from a lower edge portion in accordance with the inclination angle of the slope is raised in an enclosure opening upward in the slope direction of the slope, Using a biodegradable fixing pile for fixing the enclosure to the slope,
By placing the surrounding frame at a predetermined interval on the slope to be greened, seeds or soil containing seeds are fastened to each of the surrounding frames, so that the seeds are fixed on the slope to be greened,
Because it grows from the state of seeds, it is easy to adapt to native soil,
Furthermore, if native seeds are naturally transported from the secondary forest, strong trees that are more adapted to the soil and have good growth can be grown. Also, when the seedlings are sufficiently rooted and stable, the surrounding frame and the fixing pile are biodegraded and returned to the soil, so there is little effect on the environment, the slope is in a natural state and the elongation of the root is not hindered, It is safe because there are no fixing stakes to get in the way when weeds are removed.

Also, the seeds of the native species or the soil containing the seeds are sprayed on the slope to be greened, the seeds of the native species are retained in the surrounding frame, and the seeds of the native species are fixed on the slope to be greened. By doing so, even if no secondary forest remains above the slope to be revegetated, seeds of native species that are easily adapted to the soil on the slope will be established on the slope, and strong trees will be grown.

[0027] Further, by providing a vegetation base material in which the surrounding frame is made of an organic fiber material as a main component and is hardened in a porous state and mixed with a fertilizer, the growth of settled seeds can be promoted.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a slope greening method according to the present invention.

FIG. 2 is a front view showing an installation state of an enclosure in FIG. 1;

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a perspective view showing an installation state of a surrounding frame in FIG. 1;

FIG. 5 is a front view showing an installation state of another surrounding frame in FIG. 1;

FIG. 6 is a sectional view taken along line BB in FIG. 5;

FIG. 7 is a perspective view showing an installation state of a surrounding frame in FIG. 5;

FIG. 8A is a front view showing a fixing pile, and FIG.
FIG. 3 is a sectional view taken along the line CC.

FIG. 9 is a schematic view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slope for greening 2 Secondary forest 3 Enclosure frame 5 Wall 5a Central wall plate 5b Side wall plate 6 Fixing projection 7 Fixing hole 8 Fixing pile 9 Wall 9a Side wall plate 10 Pile main body 10a Retaining part 11 Holding Part 12 Vegetation base material 13 Topsoil

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01G 9/02 103 A01G 9/02 103T

Claims (3)

[Claims] 1. A biodegradable fence frame, which is raised on a lower edge part of a wall body provided with a fixing protrusion in accordance with the inclination angle of the slope and opened upward on the slope in the direction of inclination. Using a biodegradable fixing pile for fixing the enclosure to the slope, installing the enclosure at predetermined intervals on the slope to be greened, and securing the seed or seed-containing soil to each enclosure. Wherein the seeds are fixed on the slope to be greened. 2. A seed of a native species or a soil containing a seed of a native species is sprayed on a slope to be greened, and the seed of the native species is retained in a surrounding frame. 2. The method for greening a slope according to claim 1, wherein the seeds are fixed. 3. The method for greening a slope according to claim 1, wherein the surrounding frame is provided with a vegetation base material which is solidified in a porous state mainly of an organic fiber material and mixed with a fertilizer.