JP2004305138A - Greening method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a greening method for promoting the quick formation of natural plantation by using a work space and construction machines for land-creation and forming a growing environment suitable for the local plant variety. <P>SOLUTION: The greening method comprises a treating soil collection step S1 to collect the soil containing a rootstock, a sieving step S2 to separate the treating soil into soil and the rootstock, a rootstock laying step S3 to lay the rootstock on the greening area, a soil blasting step S4 to blast the soil against the greening area holding the laid rootstock, and a net curing step S5 to cure the rootstock by covering the soil-blasted greening area having laid rootstock with a net. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a greening method in which a construction area such as a slope is greened by native vegetation around a site.
[0002]
[Prior art]
The revegetation method of a slope by seed spraying, turf turf, or the like is a known technique, and aims to stabilize the ground and restore the landscape by greening the slope early. However, there are many non-native species of plants due to the greening, and there is a concern that they may affect the local ecosystem.
On the other hand, a method of restoring the landscape by planting native seedlings, sowing the topsoil of the local species, spraying the topsoil of the local species, etc. to perform natural vegetation has also been adopted. However, planting seedlings is a one-stock, one-stock process, which makes it difficult to implement on large slopes. Also, when the topsoil is scattered on a very large slope, it is generally constructed by manual transportation, and it is difficult to carry out the topsoil because the topsoil containing water is heavy. In addition, spraying of topsoil uses only sieved soil, so only germination of small seeds mixed in the soil can be expected, and only seeds that are partially unsuitable for growth on slopes and restoration of natural vegetation can be expected. Stable vegetation cannot be expected because, for example, vegetation restoration may not proceed due to contamination, and only so-called "pioneer species" whose germination is promoted by burning or the like may be remarkable.
[0003]
Conventionally, as a revegetation method that restores local native vegetation directly and in a short period of time and does not disturb the local ecosystem, the treated soil is collected by removing visible rubble and root stocks, and the collected treated soil is A slope greening method is disclosed in which buried seeds are stimulated by crushing, compressing or grinding, mixed with a vegetation base material, and sprayed or sprayed on the ground (see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-6-237606 ([0006] to [0020], FIG. 3)
[0005]
[Problems to be solved by the invention]
However, the above-mentioned conventional slope greening method has the following problems.
(1) When crushing treated soil and stimulating buried seeds, a special machine and its work space are newly required, and this is effective only for large-scale construction with a large site.
(2) There is a case where germination does not occur as planned due to a difference in light condition and temperature condition of the existing land of the collected treated soil due to the soil or spraying on the bare land.
(3) Although the generated soil is used, there is still a lot of waste due to the disposal of root stocks.
(4) Vegetation that is difficult to germinate cannot be expected.
(5) There is a possibility that seeds such as weeds and exotic species may enter before germination by natural vegetation.
[0006]
On the other hand, in recent years, disposal of construction surplus soil generated by large-scale development has become a problem, but since this construction surplus has high resource value, including rootstocks and buried seeds, its effective utilization is Is desired.
[0007]
The present invention has been made in order to solve the above-mentioned problems, and by using a work space and construction equipment used for conventional land preparation work and the like, creating a growth environment suitable for native vegetation, It proposes a greening method that promotes natural vegetation.
[0008]
[Means for Solving the Problems]
In order to solve such a problem, the invention according to claim 1 uses a treated soil including a root stock, a sieving step of separating the treated soil into soil and a root stock, and a root stock that lays the root stock in a construction area. And a soil spraying step of spraying the soil onto the construction area where the root stock is laid, to promote the restoration of vegetation in the construction area.
[0009]
This greening method is expected to restore natural vegetation by native vegetation by germination from these root plants by using treated soil containing root plants of native plants. There are advantages. It is preferable to use the remaining construction soil as the treated soil to be used, because the amount of unloaded soil can be reduced.
[0010]
First, with the sieving process, with regard to the laying of root stocks that need to be performed manually, the weight can be reduced by removing soil from the root stocks, and the work can be performed more safely and easily.
[0011]
In addition, in the root stock laying process, by laying the root stock in the entire construction area, even plants that require time to germinate, including trees that are difficult to germinate, can be expected to quickly restore to natural vegetation by germination from the root stock. . In addition, by reusing root stocks that have been conventionally disposed of as waste, the amount of waste can be significantly reduced, and an environmentally friendly construction method can be achieved.
[0012]
Also, in the soil spraying step, natural vegetation in the construction area can be promoted by germination from buried seeds contained in the soil. By spraying the soil on the root stock laid in the construction area, the soil is fixed on the uneven surface of the construction area surface formed by the root stock, so it is possible to reduce the outflow of soil due to rainfall etc. Become.
[0013]
The invention according to claim 2 is the revegetation method according to claim 1, wherein the treated soil includes buried seeds, and in the sieving step, the soil including the root stock and the buried seeds is used. And the soil including the buried seeds is sprayed on the construction area by the soil spraying step.
[0014]
By such a greening method, by using treated soil containing embedded seeds, not only vegetation by trees germinating from root stocks, but also by vegetation by wild plants of native plants that germinate from embedded seeds contained in soil, The restoration of natural vegetation can be encouraged. The vegetation of such native plants makes it possible to prevent the invasion of exotic seeds.
[0015]
The invention according to claim 3 is the tree planting method according to claim 1 or 2, wherein the root stock is laid, and the construction area where the soil is sprayed is made of a net material so as to have a desired growth condition. It is characterized by including a net curing step of covering and curing.
[0016]
The desired growth conditions are the existing light conditions and temperature / humidity conditions originally possessed by the land from which the treated soil was collected, and by promoting the vegetation of native plants by reproducing the existing growth conditions, the samples were collected. The purpose is to prevent the buried seeds and root strains contained in the treated soil from germinating due to environmental changes.
In other words, by covering the surface of the construction area with nets such as light-shielding nets and cold gauze by the net curing process, the existing light is illuminated by the amount of light taken from the stitches of this net and the warmth and humidity adjusted by the same stitches. It is possible to reproduce conditions and temperature / humidity conditions, and thereby it is possible to promote the germination of buried seeds and root stocks in the treated soil.
In addition, by covering the surface of the construction area with nets, it is possible to prevent invasion of seeds such as weeds and exotic species, and it is possible to create a growth environment suitable for native vegetation.
[0017]
The invention according to claim 4 is the greening method according to claim 3, wherein the net material is formed from a naturally decomposable material.
[0018]
Such a greening method uses a net material formed of a naturally degradable material for the net material covering the construction area, so that the net material is decomposed at the same time as the restoration of vegetation, eliminating the need to perform the work required for removing the net. Becomes possible.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the drawings. In the description, the same elements will be denoted by the same reference characters, without redundant description.
FIG. 1 is a flowchart showing an operation procedure of the slope greening method according to the present invention. The slope having a predetermined slope formed by constructing a cut slope in a mountain area having forests, The slope is greened by reusing treated soil collected from excavated soil generated in the cutting work. As shown in FIG. 1, this slope greening method is performed in accordance with the procedures of a treated soil collecting step S1, a sieving step S2, a root stock laying step S3, a soil spraying step S4, and a net curing step S5.
[0020]
(1) Processed soil collection step S1
For the extraction of the treated soil 10, of the excavated soil generated at the time of constructing the cut slope, mainly the topsoil, which is the soil containing the root stock and the buried seeds, is collected (FIG. 2A). When the treated soil 10 is insufficient, or when it is not possible to expect good-quality buried seeds, root stocks 21 and soil 30 from the treated soil 10, use those collected from the forest near the slope to perform greening. Is also good.
First, the standing tree 20 is cut out and carried out by a dump truck 51 or the like (FIG. 2B). Next, the large root stock 22 and the boulders are removed and disposed of as waste (FIG. 2 (c)), and a relatively small root stock 21 (hereinafter simply referred to as "root stock") is formed by a backhoe 50 or the like so as to have a planned slope shape. ) And wild grass 23 and the like, and the treated soil 10 is stored (FIG. 2D). Since the treated soil 10 is collected from an existing mountainous area, the treated soil 10 includes buried seeds.
[0021]
(2) Sieving process S2
The collected treated soil 10 is sieved and separated into soil 30 containing buried seeds and root stock 21. Here, unnecessary gravel and the like are removed. At this time, a known sieve can be used, and a backhoe 50 in which a bucket is replaced with a rotary sieve, a drum-type rotary sieve, a conveyor sieve, or the like can be used.
[0022]
(3) Root stock laying process S3
In the sieving step S2, the root stock 21 from which the soil 30 has been removed is transported onto the slope, and is laid by a human power or the like so as to be even on the entire slope (see FIG. 3). Here, if the slope is steep and the roots need to be fixed in order to prevent them from falling, the upper surface of the roots 21 may be locally covered with a coarse-measuring net (not shown). Cover and fix the net with anchors. As a result, the roots 21 germinate, the roots are stretched, and the net is decomposed. Therefore, there is no need to remove the roots and it does not hinder vegetation.
[0023]
(4) Soil spraying step S4
The soil 30 separated in the sieving step S2 is sprayed on the slope on which the root stock 21 is laid with a predetermined thickness using a known spraying machine (see FIG. 4). Here, it is assumed that the soil 30 is mixed with a fertilizer or the like as necessary to promote vegetation. In addition, when the soil 30 is difficult to settle on the slope due to the steep slope, a known binder such as cement, lime, or a polymer resin is mixed with the soil 30 within a range that does not affect the vegetation. Is also good. The method of mixing these fertilizers and binders into the soil is preferably performed by using a backhoe 50.
[0024]
(5) Net curing process S5
The slope is covered with a net 40 made of a naturally decomposable material, and the light conditions, temperature and temperature of the existing forest before the construction work are controlled by the amount of light taken from the stitches of the net 40 and the warm air and humidity adjusted by the stitches. A growth environment is created according to the humidity conditions to cure the soil 30, the buried seeds and the root stock 21 (see FIG. 5).
[0025]
As described above, according to the present invention, in the treated soil collecting step S1, the treated soil collected in a state including the buried seeds, the wild grass 23, the root stock 21 and the like, together with the germination from the buried seeds and the wild grass 23 and the embedding, Germination from the root stock 21 of a plant that requires time to germinate from soil seeds and restoration of natural vegetation by germination from the root stock 21 such as a tree in which seed germination is difficult can be expected.
[0026]
Further, by separating the collected treated soil 10 into the soil 30 and the root stock 21 in the sieving step S2, the soil 30 is removed, the root stock 21 is reduced in weight, and transport and laying of the root stock 21 to the upper part of the slope is easy. become.
[0027]
In the root stock laying step S3, the root stock 21 is laid directly and evenly on the entire slope, and only buried seeds that are unsuitable for growth on the slope and restoration of natural vegetation are mixed, so that vegetation restoration proceeds. It is possible to avoid the appearance of a missing part. Further, by reusing the root stock 21 which has been conventionally waste, it is possible to reduce waste generated in the construction work.
[0028]
In addition, since the existing buried seeds contained in the soil 30 are also sprayed on the slope in the soil spraying step S4, by germinating from the buried seeds together with the root stock 21 laid in the root stock laying step S3, Existing vegetation on the slope will be possible.
[0029]
In the net curing step S5, by covering the surface of the construction area with a light-shielding net or a net 40 made of nets such as cold gauze, it becomes possible to adjust the amount of light, the warm air and the humidity by the stitches of the net 40, By creating the light conditions and the temperature / humidity conditions described above, it becomes possible to promote the germination of the buried seeds and the root stock 21 in the treated soil 10. In addition, by using the net 40 formed of a naturally decomposable material as the net 40, the net 40 is decomposed at the same time as the vegetation is restored, so that the maintenance-free slope greening can be performed without removing the net. In addition, by covering the slope with these nets, invasion of foreign species such as seeds can be prevented, and the slope can be greened in consideration of the natural environment.
[0030]
As described above, an example of a preferred embodiment of the present invention has been described. However, the present invention is not limited to the embodiment, and a design change can be appropriately made without departing from the gist of the present invention.
For example, in the above-described embodiment, the construction area is a cut slope, but the invention is not limited to this. The invention can be applied to all bare lands that require greening.
In addition, roots were fixed on steep slopes using nets and anchors formed from naturally degradable materials.However, the present invention is not limited to this, and roots can be fixed and growth is hindered. If not, the fixing method is not limited.
In addition, the soil containing the buried seeds is sprayed on the slope on which the root stock is laid. However, the invention is not limited to this, and the method of construction is not limited, such as sprinkling with human power or a backhoe.
In addition, when mixing the fertilizer and the binder into the soil, the mixing is performed using a backhoe. However, the mixing method is not limited to this, and the mixing method such as mixer mixing is not limited.
In addition, net curing was made using nets made of naturally degradable materials.However, the present invention is not limited to this, and it is possible to create a growth environment that matches the light and temperature conditions of existing forests. The material is not limited as long as it is possible to suppress invasion of foreign seeds and outflow of soil.
[0031]
【The invention's effect】
According to the revegetation method of the present invention, by using the treated soil containing the root stock, the root stock contained in the treated soil is used, and by creating a growth environment suitable for these, the prompt restoration to natural vegetation is promoted. Becomes possible.
[Brief description of the drawings]
FIG. 1 is a flowchart showing an operation procedure of a slope greening method according to the present invention.
FIGS. 2A and 2B are side views showing a treated soil sampling step, wherein FIG. 2A is a side view showing the current state of a construction area, FIG. FIG. 4D is a side view showing a construction area from which a large root stock has been removed, and FIG. 4D is a side view showing a slope excavation state in the construction area.
FIG. 3 is a side view showing a root stock laying process.
FIG. 4 is a side view showing a soil spraying step.
FIG. 5 is a side view showing a net curing step.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Treated soil 20 Tachiki 21 Root stock 22 Large root stock 23 Wild grass 30 Soil 40 Net 50 Backhoe

Claims (4)

Using a treated soil including root stock, a sieving step of separating the treated soil into soil and root stock, a laying step of a root stock to lay the root stock in a construction area, and applying the soil to the construction area where the root stock is laid. A soil spraying step of spraying, wherein the planting is promoted to restore vegetation in the construction area. Using the treated soil containing embedded seeds, separating the root stock and the soil containing the embedded seed by the sieving step, including the embedded seed in the construction area in the soil spraying step The greening method according to claim 1, wherein the soil is sprayed. The method according to claim 1 or 2, further comprising a net curing step of laying the root stock and spraying the soil and covering the construction area with a net material so as to satisfy a desired growth condition, and curing the net. The greening method described. The greening method according to claim 3, wherein the net material is formed of a naturally decomposable material.

Images