JP2006104755A - Vegetation restoring method of bare land - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vegetation restoring method of bare land located in an area having restriction on materials transported in for the purpose of conservation in a gene level, or an area where materials and equipment, etc. are difficult to transport in, capable of forming a planting base only by using materials obtained in a peripheral area of the land to be planted, and the planting base protected from eroding and drying to thereby achieve good vegetation recovery of the bare land. <P>SOLUTION: According to the vegetation restoring method of the bare land, at least soil taken at the site 2 is stuck to the bare land 1, and thereafter pebbles or wood chips 3, 3, etc. are stuck to a surface of the soil 2 to cover the same. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an area where gene level conservation is required, such as sites where the import of materials that may cause gene disruption is restricted, or materials from a remote location due to geographical or economic reasons, The present invention relates to a method for restoring bare vegetation for restoring and restoring vegetation in a bare part of a site where it is difficult to carry in equipment.

Methods for restoring vegetation in bare land are roughly divided into human construction methods and machine construction methods, and various methods have been invented and put into practical use.
According to the general classification method of tree planting methods implemented in Japan, the former is vegetation net work, vegetation mat work, vegetation bag work, etc., the latter is seed spraying work, homeland seed spraying work, thick layer base material spraying Applicable to construction.

In the present technical field, the present applicant has invented and put to practical use, for example, Patent Document 1 as a mechanical construction method and Patent Document 2 as a manual construction method.
Japanese Patent No. 1883254 Japanese Patent No. 2619327

  Bare areas that are subject to vegetation recovery vary from slopes, hillside collapsed land, coastal sand, etc., but unless there are special restrictions, vegetation is restored by using the existing tree planting method as described above. It is possible.

  However, for example, in places where genetic materials are required to be preserved, such as in regions where conservation at the genetic level is required, or where there are restrictions on bringing in materials that may cause genetic disruption, or because of geographical and economic reasons, etc. In sites where it is difficult to carry in materials, equipment, etc., construction using materials obtained in the vicinity of the site may be forced. In this case, there is a problem that the existing tree planting method cannot sufficiently cope with it.

  In addition, in order to recover vegetation, it is an extremely important condition to prevent the base on which plants grow (hereinafter referred to as the growth base) from erosion due to rainfall or the like. In particular, when there is a gradient in the bare ground part, it is an important condition to prevent erosion of the flowing water.

  In this case, in general tree planting methods, vegetation base material mixed with an erosion inhibitor (cement-based or polymer-based resin) is sprayed, or netting work (wire netting or resin netting) is used as a greening foundation work. Erosion resistance is ensured by methods such as the use of a combination of construction and the like, or by covering the formed growth base with a multi-net.

  However, in the vegetation recovery at the site where it is difficult to apply the normal revegetation as mentioned above, it is difficult to bring in materials, etc., or it is difficult to carry in materials, equipment, etc. I could not respond.

  Furthermore, in vegetation recovery at sites where it is difficult to apply normal revegetation as mentioned above, it is often difficult to carry out vegetation management work such as irrigation after construction, so depending on the construction time and the weather conditions of the construction site. Therefore, it is necessary to take measures in advance to prevent the growth base from being dried after construction and to prevent the germination growth of the plant from being hindered.

  In view of the above situation, the present invention is limited to materials obtained from the surrounding area at sites where the import of materials, etc. is restricted for genetic level maintenance or where it is difficult to carry in materials, equipment, etc. An object of the present invention is to provide a bare land vegetation restoration method that can form a growth base by using it, prevent erosion and dryness of the growth base, and achieve good vegetation recovery of the bare ground part.

In order to solve the above problems, the present invention provides the following configurations.
The invention according to claim 1 provides a method for recovering vegetation in bare ground, characterized in that at least collected soil is attached to bare ground, and stone gravel or wood chips are attached to the surface of the collected soil to cover them. is there.

  The invention according to claim 2 is characterized in that at least collected soil, fibers, and collected soil are sequentially laminated on bare ground in a laminated state, and stone gravel or wood chips are pasted and coated on the surface portion of the collected soil in the upper layer. It provides a method for recovering bare vegetation.

  The invention according to claim 3 is characterized in that at least the collected soil is pasted after the fibers are pasted on the bare ground, and the surface portion of the pasted collected soil is covered with stone gravel or wood chips. It provides vegetation recovery methods.

The invention according to claim 4 provides the bare land vegetation recovery method according to claim 1, 2 or 3, wherein the collected soil is mixed with a soil improvement material.
The invention according to claim 5 is characterized in that planting or cuttings are made in a gap between the stone gravel or wood chips, and the method for recovering bare vegetation according to claim 1, 2, 3 or 4 Is to provide.

  According to the invention of claim 1 of the present invention, since at least the collected soil is pasted on the bare ground, and a method for recovering the vegetation in the bare ground, which is covered with stone gravel or wood chips on the surface of the collected soil, is provided. It is possible to mainly use collected soil, stone gravel, or wood chips obtained from the surrounding area of the construction site, and there is no need to carry in materials from a remote location, and there is no risk of disturbing local genes.

  In addition, since these materials can be obtained from the surrounding area, they are economically inexpensive, and good bare-vegetation vegetation recovery is possible in gene-conservation areas and areas where it is difficult to bring materials from remote areas economically. Can be achieved.

  In addition, erosion and drying of the growth base can be prevented by covering the growth base mainly composed of collected soil with stone gravel or wood chips, thereby improving the water retention of the growth base and increasing plant growth. Can be promoted.

  According to the second aspect of the present invention, bare soil is obtained by sticking at least collected soil, fibers, and collected soil to a bare ground in a laminated state, and covering the surface of the collected soil with stone gravel or wood chips. In addition to the effect of the invention according to claim 1, since fibers can be obtained from the surrounding area, the fibers are economically inexpensive, and the fibers provide water retention for the growth base. Can enhance and promote plant growth.

  According to the invention of claim 3, the bare soil vegetation recovery method comprising attaching at least collected soil after attaching fibers to the bare ground, and covering the surface portion of the attached collected soil with stone gravel or wood chips. Therefore, it is possible to expect substantially the same effect as that of the second aspect of the invention.

  According to the invention described in claim 4, since the soil-improving material is mixed in the collected soil, in addition to the effect of the invention described in claim 1, 2, or 3, the soil-improving material according to the properties of the collected soil The effect of soil improvement by can be expected.

  According to the invention described in claim 5, since planting or cutting is performed in the gap between the stone gravel or wood chips, in addition to the effect of the invention described in claim 1, 2, 3 or 4, By planting or cutting, vegetation recovery can be achieved on the bare bare part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples.
FIG. 1 (a) shows a first aspect of the present invention. In the first aspect, a sampled soil 2 collected from the periphery of the construction site is pasted on the bare ground 1, and the surface of the sampled soil 2 is further attached. This is a method for restoring vegetation in bare land by pasting stone pebbles or wood chips 3, 3.

  FIG.1 (b) shows the 2nd aspect of this invention, this 2nd aspect sticks the sampling soil 2 used as the lower layer extraction soil 2A sequentially on the bare ground 1, and on the lower layer extraction soil 2A. Fibers 4 to be described later are pasted, and the soil 2 to be the upper layer collected soil 2B is pasted on the fibers 4 to form a sandwich-like stacked growth base. Stone gravel or wood chips 3, This is a method for restoring vegetation in bare land by pasting 3 ...

  The fibers 4 are materials that are used together mainly for the purpose of maintaining water retention. The type and quality are not limited, but in particular, in places where the import of materials that may cause genetic disruption is restricted, such as in regions where conservation at the genetic level is required, It is preferable to paste a plant collected around the site as it is, or a plant processed into a mat shape or the like. In addition, defoliation and the like may be used. The thickness of the fibers 4 to be attached varies depending on the kind and quality of the collected soil 2, but normally, if it becomes too thick, drying is promoted, and therefore it is preferably about 5 cm or less.

  FIG.1 (c) shows the 3rd aspect of this invention, and this 3rd aspect attaches the sampling soil 2 on it after sticking the fibers 4 on the bare ground 1, and also sticks it further. In this method, the surface of the soil 2 is covered with stone gravel or wood chips 3, 3. As in the second embodiment, the thickness of the fibers 4 to be attached varies depending on the type and quality of the collected soil 2 but is preferably about 5 cm or less.

  The first to third aspects described above are the basic configuration of the present invention, and the bare ground 1 to be constructed may be flat or sloped, and there is no restriction whether the geology is earth or sand or rock. In the case of slopes, the slope at which the attached stone gravel or wood chip 3 can be held stably is the limit, but as will be described later, it is possible to construct with a steep slope by mixing water with the collected soil 2. It becomes possible.

  The thickness of the collected soil is appropriately set according to the location conditions of the construction target site, the weather conditions, the status of the greening foundation work, and the like. In general, in consideration of stability, when the construction target site is steep, it is desirable that the average thickness is 30 cm or less, but this is not the case when the slope is gentle. If the collected soil contains buried seeds, the vegetation can be restored even with a thickness of about 5 cm. In addition, the construction of the collected soil, fibers, gravel or wood chips can be carried out by human construction, or by using existing construction methods such as squeezing using a construction machine, spraying, and air conveyance.

  Although the illustration of the fourth aspect is omitted, the soil physical properties of the bare ground growth base are improved by mixing a soil conditioner with the collected soil 2 used in the first to third aspects described above. This is a method to restore the vegetation of the ground.

  The quality of the collected soil 2 varies greatly depending on the location where it is collected. In the first to fourth aspects of the present invention and the fifth aspect to be described later, in order to stably hold the collected soil 2 even on an inclined land or the like, the collected soil 2 which is usually stirred by adding water is used as the bare ground 1 and Affix to fibers 4.

  In this case, for example, if the collected soil is rich in viscosity, the growth base formed becomes very hard when dried, and inhibits the germination growth of the plant, but promotes the germination growth of the plant by improving the soil physical properties Can be made.

  As a soil improvement material for improving soil physical properties, for example, there are various composts, inorganic soil improvement materials and the like, and various materials can be used without being limited thereto, Since construction sites are gene conservation areas, that is, sites where the import of materials that may cause genetic disturbance is restricted, in that case, litter, plants (wooden trees) collected from the surrounding area It is preferable to use chopped husks such as cereals and herbs), or threshing husks and straws such as cereals as soil improvement materials.

  FIG. 1 (d) shows a fifth aspect of the present invention, in which planting or cutting is performed in the gap between the stone pebbles or wood chips 3, 3. Yes (the figure shows an example of cuttings).

  Depending on the geology of the bare ground part 1, the cuttings are inserted into the growth base formed by the collected soil 2 (for example, the cuttings 5A) or up to the bare ground 1 which is a natural ground. Although it inserts (for example, cuttings 5B), in order to raise the survival of cuttings 5,5 ..., it is necessary to insert firmly to a natural ground (bare ground 1).

  Further, the cuttings 5 can be prevented from drying damage by making the cuttings as deep as possible. If the cuttings 5 are performed after the stone gravel or wood chips 3, 3... Are completely pasted, the insertion may be difficult due to looseness of the stone gravel or wood chips 3, 3,. Therefore, it is desirable that the steps are sequentially performed in the step of attaching stone gravel or wood chips 3, 3. Furthermore, instead of the cuttings 5, seedlings, bulbs and the like can be planted in the gaps between stone gravel or wood chips 3, 3,.

  In each aspect mentioned above, it is preferable to use the collected soil 2 collected from around the site as much as possible. However, it can be brought in from other areas or remote areas, and this is not the case when it is allowed. The collected soil 2 is preferably one containing buried seeds such as local topsoil as much as possible.

  Moreover, the recovery of vegetation can be greatly accelerated by using the seeds collected in the field mixed with the harvested soil 2. Furthermore, you may mix auxiliary materials, such as a fertilizer, as needed. The thickness of the collected soil 2 is not particularly limited, but if a thickness of about 4 to 30 cm is secured, smooth vegetation recovery can be expected.

  The stones or wood chips 3, 3... To be attached are generally attached to the collected soil 2 by mixing water into a kneaded state and sequentially attaching tiles thereon. In the pasting, the gravel or the wood chips 3, 3,... Are arranged on the surface of the pre-tamped soil 2 so as to be arranged as appropriate. It is preferable to do so.

  In this case, depending on the amount of water to be added, the gravel or wood chips 3, 3,... Are arranged in a stonework shape when the water content of the collected soil 2 is high, and in an empty stone shape when the water content is low. The Therefore, when the water content of the collected soil 2 is high, stone gravel or wood chips 3, 3,... Can be pasted on the collected soil 2 to a considerably steep slope.

  In some cases, the gap between the stone gravel or the wood chips 3, 3,... May be as large as possible for germination of seeds, but the interval is not particularly limited. Since the stone gravel or wood chips 3, 3,... To be used are almost indefinite in shape, there is no need for construction in consideration of the interval in actual construction. Even if stones or wood chips 3, 3... Are installed in close contact with each other, they are not joined together with an adhesive or the like, so that they do not hinder the germination and growth of plants.

  The stone gravel or wood chip 3 to be used may be collected from the periphery, and in the case of stone gravel, it is appropriately crushed, and in the case of wood chip, it is crushed or cut with scissors or the like. These adjustment methods are not particularly limited. The size of the stone gravel or wood chip 3 to be attached is not particularly limited, but those having a diameter of about 5 to 15 cm and a thickness of about 1 to 5 cm are easy to handle, crushed squared stones and thicker ones than natural cobbles. However, the thinner one is easier to dig into the surface of the collected soil 2 and is more suitable for securing erosion resistance and water retention. Wood chips are effective for effective use of wind-fall trees, driftwood, or thinned wood, but are lighter and quicker to decompose than stone gravel. Stone pebbles are preferred when particularly required.

  The construction method of the present invention is applied to the entire surface of bare ground, and can be applied, for example, as a filling work for various frame work, or as a reinforcement work performed at a forest site, etc. It can also be applied partially, such as in the shape of a shape, island, or patch. In the case of partial construction, if the surface layer of bare ground is dug down and adjusted so that the surface of the attached gravel or wood chip is as high as the surface of the surrounding bare ground, water retention and resistance This is suitable for improving the erodibility. In addition, when the bare ground portion is an inclined land, it is preferable to apply the method of the present invention after digging in a stepped shape or a groove shape.

  By digging the construction surface from the surrounding bare ground, the effect of improving water retention and erosion resistance can be obtained, and by using the excavated soil as the sampling soil, the sampling ground can be collected around the site. Even when it is difficult to obtain, this construction method can be applied without disturbing the surrounding environment.

  Thus, according to the first aspect of the present invention, it becomes possible to mainly use collected soil, stone gravel, wood chips, etc. obtained from the surroundings of the construction site, and carry in materials from other areas or remote areas. There is no need to disturb the local genes.

  In addition, since these materials can be obtained from the surrounding area, they are economically inexpensive, and good bare land in gene conservation areas and areas where it is difficult to bring materials from other areas or remote areas economically. Vegetation can be restored.

  In addition, erosion and drying of the growth base can be prevented by attaching stone gravel or wood chips on the growth base mainly composed of collected soil, thereby improving the water retention and erosion resistance of the growth base. , Can promote the growth of plants.

  According to the second aspect and the third aspect, in addition to the effects of the first aspect, since fibers can be obtained from the surrounding area, it is economically inexpensive, and the fibers are water retention bases for growth. It can improve the nature and promote the growth of plants.

According to the 4th aspect, in addition to the effect of the 1st, 2nd, or 3rd aspect, the effect of the soil improvement by a soil improvement material can be anticipated.
According to the 5th aspect, in addition to the effect of the 1st, 2nd, 3rd, or 4th aspect, the vegetation recovery of the bare ground where a bare ground part is favorable can be aimed at by planting or cutting. Materials such as planting or cuttings can be collected around the site.

  As described above, according to the vegetation restoration method for bare land according to the first to fifth aspects of the present invention, 1) a growth base is formed using only materials obtained from the local area, and 2) the local area in the same manner. 3) By preventing erosion and drying of the growth base formed using only the materials obtained from 3), it is possible to improve the vegetation of the bare ground part, so that the areas where gene level conservation is required As such, it is difficult to bring materials, equipment, etc. from other areas or remote areas due to geographical or economic reasons where the import of materials that may cause genetic disruption is restricted. The vegetation restoration of bare land can be suitably achieved in a site where application of a normal tree planting method is difficult.

  In other words, combined use of an erosion inhibitor to prevent erosion of the growth base, a revegetation foundation work, and a bare land vegetation management work represented by irrigation to prevent drying, which can be used (utilized) together with ordinary revegetation works It is possible to germinate and grow a plant efficiently without causing any problems.

  Sites where vegetation restoration is required by the application of the present invention includes wilderness natural environment conservation areas where genetic level disturbance prevention is required, forest ecosystem protected areas, special protection areas of national parks where disturbance level prevention is required, In addition to natural environment conservation areas, etc., tree planting in geographically and economically high mountain areas where it is difficult to carry in materials and equipment from other areas and remote areas, and areas where economically usable materials and equipment are restricted Etc.

  The present invention has limitations on the use of general-purpose materials (such as various types of commercially available growth base materials, exotic grasses for greening, etc.) used in general tree planting methods, such as when it is necessary to prevent local genetic disturbance In some cases, or in areas or cases where there are restrictions on transportation and availability of materials such as greening in high mountain areas that are geographically inconvenient, vegetation can be restored using only materials collected from the surrounding area.

  It is also effective as a method for restoring vegetation in places where vegetation has declined due to relatively small galleys in mountainous areas, climbing by mountain climbers in the vicinity of mountain trails, etc., or damage caused by wild animals.

(A) It is sectional drawing which shows roughly the 1st aspect of the vegetation restoration method of the bare land of this invention. (B) It is sectional drawing which shows the 2nd aspect of the vegetation restoration method of the bare land of this invention roughly. (C) It is sectional drawing which shows roughly the 3rd aspect of the vegetation restoration method of the bare land of this invention. (D) It is sectional drawing which shows schematically the 5th aspect of the vegetation restoration method of the bare land of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bare ground 2 Collection soil 3 Stone gravel or wood chip 4 Fibers 5 Cuttings

Claims (5)

  A method for recovering bare vegetation, comprising pasting at least collected soil on bare ground, and covering the surface of the collected soil with stone gravel or wood chips.   A method for recovering vegetation in a bare land, characterized in that at least collected soil, fibers, and collected soil are sequentially laminated on the bare ground in a laminated state, and a gravel or wood chip is attached to the surface of the upper collected soil.   A method for recovering vegetation of bare land, comprising sticking at least collected soil after attaching fibers to the bare ground, and covering the surface portion of the attached collected soil with stone gravel or wood chips.   The method for recovering bare vegetation according to claim 1, 2 or 3, wherein the collected soil is mixed with a soil improvement material. The method for recovering bare vegetation according to claim 1, 2, 3 or 4, characterized in that planting or cuttings are made in a gap between the stone gravel or wood chips.

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