Journal of the Japanese Society of Revegetation Technology
Online ISSN : 1884-3670
Print ISSN : 0916-7439
ISSN-L : 0916-7439
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Volume 36, Issue 1
Displaying 1-50 of 51 articles from this issue
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ORIGINAL ARTICLES
  • Estimate of net CO2 sequestration in a revegetation slope dominated by Alnus sieboldiana Matsum.
    Ryuichi TACHIBANA, Koichi FUJIE, Tomohiro CHIZUKA, Kenji FUKUNAGA, Tak ...
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 3-8
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.3
    JOURNAL FREE ACCESS
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    We estimated the CO2 sequestration in plant biomass —especially that in the stem, branch, root, litter, and growth base— in a revegetation slope dominated by Alnus sieboldiana Matsum. The results indicate that the CO2 sequestrations in those parts in an area of 1 m2 are 21.0 kg, 4.2 kg, 5.5 kg, 1.7 kg, and 8.8 kg, respectively. Furthermore, we estimated the net cumulative CO2 sequestration (CCS) in a revegetation slope including CO2 emission from construction work between the two cases. One involves a combination of a lath netting work (LNW) and a material spraying work (MSW) and the other involves two different combinations of a LNW, two slope-crib works, and a MSW. The results indicate that 30 years after seeding, the net CCS of the former is 80.6 kg CO2 m-2 while the net CCSs of two combinations in the latter are 11.3 and 0.3 kg CO2 m-2, respectively.
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  • Inhibition of forest soil runoff by horizontal step works using thinning logs
    Keitaro YAMASE, Daisuke TOCHIMOTO, Hiroaki SEKIOKA, Chikage TODO
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 9-14
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.9
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    To quantify the amount of surface erosion from slopes with and without horizontal step works using thinning logs, a soil trap was installed at base of a steep slope site in Cedar and Cypress artificial forests, Hyogo Prefecture. The amount of surface erosion at heavy rains was 0.128∼1.023 m3 • ha-1 • yr-1 from slopes with the horizontal step works, whereas it was 0.318∼4.743 m3 • ha-1 • yr-1 from slopes without the horizontal step works. The support practice factor of USLE was 0.03∼0.63 with horizontal step works, and effect was seen clearly in place, it was about the same as hillside covering works.
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  • Study about research on origin and transition of ‘slope revegetation technology’ in Japan
    Toshimitsu IIZUKA, Mitsuo KONDO
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 15-20
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.15
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    In this research, it surveyed by dividing revegetation technology of Japan into five kinds. And the origin of slope revegetation technology in Japan and transition were summarized. As a result, the origin of slope revegetation technology had already existed around the 1st century and in 718. Since various sloping grounds, such as a embankment, a mountain, and dorui, were fixed, the record for which various kinds of plants were used was also found. And technical history was piled up, respectively, technology was conveyed from Meiji Era and also a foreign country, and the foundation of the present slope revegetation technology was made up. Furthermore, a possibility that the foundation of a soil seed bank construction method was in ancient tomb construction technology was also found.
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  • Study on recovery of vegetation on landslided slope in Tanzawa Mountains
    Norimasa MATSUZAKI, Ituro ISHIGAKI, Kazutoki ABE, Waka SONOHARA, Yoshi ...
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 21-26
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.21
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    The aim of the study was to clarify the situation of vegetation recovery on landslide slope in Tanzawa Mountains, Kanagawa prefecture. The landslide surface conditions, tree species and condition of their growth in four landslide sites were investigated. The study results are as follows. 1) A large number of invaded trees are growing on uneven landslide surface. 2) On landslide slope in broad leaved forest more trees can invade than in conifer forest. 3) Small trees may grow easily close to bigger trees. 4) On the periphery of the landslide area, many trees are growing because of rather stable surface soil. 5) Trees can grow on the crack of bed rock without soil layer. 6) On the bare soil surface and smooth bed rock, trees can not invade. 7) On the bottom area and unstable area surface, trees can not also invade and grow
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  • Appication of distributed shallow landslide conceptual model for forest management
    Yasuhiro SHUIN, Keigo MATSUE, Kazuhiro ARUGA, Toshiaki TASAKA, Norifum ...
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 27-32
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.27
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    In order to estimate the effects of temporal and spatial fluctuation of artificial forest stand age on probability of shallow landslide occurrence, distributed shallow landslide model was applied to artificial forest of Hinoki Cypress (area 310 ha) of Utsunomiya University forest at Funyu. In this area, the heavy rainfall at the end of August 1998 caused shallow landslides mainly in the 20 years stand age area. Probability analysis of this heavy rainfall event indicates that the stochastic character of this event is equivalent to the rainfall event having the return period of 170 years at duration 72 hours. Response analysis of the effects of spatial and temporal fluctuation of artificial Hinoki stand age between 1938 and 2008 on probability area of shallow landslides with 2-year probable value of 72 hours rainfall shows that the probability area is ranging from 0.8 to 4.9 ha, and the duration of high probability area of shallow landslide is from 1970 to 1980. The probability area with the maximum annual value of 72 hours rainfall 1979 to 2008 indicates the highest value at 1998.
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  • Species diversity and composition of diaspore-containing mown plant material from the understory of secondary Pinus thunbergii Parlat forest
    Susumu YAMADA, Yuriko ENOMOTO, Yusei ISHIKAWA, Sadao MINAMI, Kazuhiro ...
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 33-38
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.33
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    Plant material mown from understory vegetation of a secondary Pinus thunbergii Parlat. forest was taken for germination tests to assess the ability of propagule recruitment. After mown in November 2008, harvested material was scattered onto soil, which contains a few seeds. 60% of the flowering species in the standing vegetation was germinated, whereas 30% of the standing vegetation was germinated from plant material. The proportion of grassland species germinated from plant material in relation to the total grassland species was high, whereas only a few forest floor species were germinated. Weed species germinated was small concerning both the number of species and the densities. Restoration techniques in secondary P. thunbergii forests using plant materials should be improved considering that species under different habitats have different rates of restoration efficiency.
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  • The Effect of slope-rooftop greening using mat plants to mitigate summer heat
    Tadahiro SHIBATA
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 39-44
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.39
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    Slope-rooftop greening using plants grown on light, thin mats with a thickness of a few centimeters is highly effective in reducing the air temperature within buildings. We found that slope-rooftop greening using thin mats had similar greening effects with the one using thicker mats and reduced energy consumption by air conditioners. Furthermore, the effectiveness of mat plants was not so much different among the species of plants used for the mat plants. As a result, mat plants were found to be effective greening material for general houses with slope-rooftop having a light load limit or tilted metal slope-rooftop to mitigate summer heat.
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  • Climbing performances of Trachelospermum jasminoides var. pubescens on wooden walls or wire fences with aerial roots or rotating shoots
    Toshifumi SASAI, Takashi SHIMOMURA
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 45-50
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.45
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    This experiment was conducted in order to research the climbing performances of Trachelospermum jasminoides var. pubescens. Five plots were set: a wooden wall plot was prepared for adhesion; a double mesh fence plot for twining; a plot whose lower half was a wooden wall and whose upper half consisted of fence; a plot formed in the opposite manner; a plot which was composed of double mesh fences with a wooden panel inserted between them, the latter three being prepared both for adhesion and twining. The climbing speed of shoot was faster on the fence plot and the panel inserted fence plot than on others. Aerial roots were emerged on both adhering shoots and climbing shoots, but the number of roots were greater in the former case than in the latter. Several twigs which adhered to the lower wooden panel twined the upper fence and climbed. These facts indicate that T. jasminoides var. pubescens selects the method of climbing according to the situation of the vertical structure such as walls or fences.
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  • Application of the heat pulse method of climbing plant-measurement of transpiration rate on Passiflora caerulea stem supported on Pargora
    Shinichi TAKEUCHI, Minato MASUYAMA
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 51-56
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.51
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    To evaluate the transpiration rate of climbing plant, the heat pulse method for measuring sap flow in passion flower (Passiflora caerulea) stems supported by Pargola was applied and tested. Because a problem existed with precision of measurement at a high flow velocity with the conventional heat pulse method, data of the time at which the temperature difference was maximal were also recorded. The rate of water uptake from the cut stem base had a close relationship with the heat pulse velocity. Thus, it is possible to quantify the transpiration rate of passion flower, which was calculated as 0.22-16.3 l/day among three plants. We evaluated a transpiration characteristic under various light-receiving conditions by covering the Pargola by sheets. A close relationship was also suggested between the structural shape of the pergola and plant species wrapped around it.
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  • Vicissitude of tree treatment methods and associations in the early Showa period
    Seiji KANEMURA, Takashi OYABU
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 57-62
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.57
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    This research investigates a process that “The Nippon Plant Protection Society (1913-1943)” ended the society and some projects. In addition, we surveyed the vicissitude of tree treatment methods and associations by literature, especially “The Journal of Plant Protection (BYOCHU-GAI ZASSHI)rdquo;. As a result, tree treatment methods had been transmitted to next generations, but there was no association that had treated trees like the Plant Clinic of the Nippon Plant Protection Society. The cause was that social request had been focused on the value of timber materials for trees. Therefore, researches for increasing the production of the timber materials had priority over tree treatment. In the present time, collecting, verifying the tree treatment technology and transmitting its infor-mation are data of ever-increasing importance for the general public
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  • Comparison of psychological effects on workers between a small interior plant and a large interior plant
    Shoko HASEGAWA, Takashi SHIMOMURA
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 63-68
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.63
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    We made a laboratory experiment to clarify the difference in psychological effects on participants between a small plant and a large plant in workplace. The participants performed tasks and completed questionnaires about mood, evaluation of task performance, and the impression evaluation of the workplace. Results suggested that both small and large plants reduced the stress during early part of the work and the fatigue and improved the feeling of relaxation. In addition, the small plant might improve the arousal level. It was shown that the small plant also improved the workroom impression. These results suggested a small plant also was effective to improve the workspace circumstances like the large plant.
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  • Evaluation experiment of the green roofs by the subjects of Chinese foreign students and Japanese
    WUYU BAGEN, Shoko HASEGAWA, Takashi SHIMOMURA
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 69-74
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.69
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    Landscape evaluation experiment by the semantic differential method was made to know the similarities and differences between two different types of subjects i.e. Chinese foreign students and Japanese college students. Twenty composite pictures were made by combining pictures of four kinds of city backgrounds with a bare roof or four green roof pictures. As a result of two-way ANOVA, main effects of the two factors (attributes and tree planting styles) were recognized and there were interactions in each background. The similarity was found in the recognition of green quality, tradition and naturalness for the spectacle of green roof between two subjects. And the recognition of comfort and unity and the style of garden were different between them.
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  • Relationship between coastal vegetation and micro-topography on sandbank at the mouth of small river
    Mai KUROTAKI, Atsushi NAKASHIMA, Masanori YAMAMOTO, Nagahiro NAKAZATO
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 75-80
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.75
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    In order to establish preservation methods of coastal vegetation at a rivermouth of a small river, we investigated the relationships between grass vegetation and micro-topography on the sandbanks of four small rivers in Osaka Bay, Japan. We set transects in each river sandbank and measured topographies along them twice in September and December 2006. We recorded grass species name and vegetation coverage ratio in September 2006. As the results, no plant was found at which topography was highly variable due to tide level between September and December 2006. Along those transects, larger amount of vegetation was observed toward the river side from the sandbank ridge than toward sea side. Moreover, coastal grasses were well observed in the low-lying parts of the transect.
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  • The effect of sand deposition on coastal sand dune vegetation at the Enshu-nada Coast, Shizuoka Prefecture, Japan
    Kohei OKA, Shinji YOSHIZAKI, Hiromi KOBORI
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 81-86
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.81
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    This study focused on changing trends of vegetation and sand deposition in order to investigate the effect of sand deposition on coastal sand dune vegetation at the Enshu-nada coast, Shizuoka Prefecture. The vegetation of study site was classified into three community types by TWINSPAN and distributed into three zones in a direction from shoreline toward inland. The community types were divided on the basis of axis 1 using DCA ordination. There was a strong correlation between score of axis 1 and sand deposition. Therefore, it was found that the distribution of each community type was influenced by sand deposition. At the same time, it was considered that it was influenced by other environmental factors such as ocean waves and seed supply, when adding the changing trends of community types to the analysis.
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  • Effects of pile up of sand on growth and morphology of Salix psammophila in the Mu-us sandy land, Inner Mongolia, China
    Tomohiro TERAMINAMI, Atsushi NAKASHIMA, Nagahiro NAKAZATO, Satoru ICHI ...
    Article type: ORIGINAL ARTICLE
    2010 Volume 36 Issue 1 Pages 87-92
    Published: 2010
    Released on J-STAGE: March 16, 2011
    DOIhttps://doi.org/10.7211/jjsrt.36.87
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    The purpose of this study is to clarify the growth and morphology of Salix psammophila C. Wang et Ch. Y. Yang in the Mu-us sandy land of Inner Mongolia, China. The thirty-six individuals were selected to dig from the top, middle and bottom of the sand dune. As a result, the length and dry weight of the apical shoot became bigger as the relative elevation became higher than the lowest ground level of the study plot. About the overwhelmed main shoot by the sand dune, the length of the underground part of the main shoot became longer as the relative elevation became higher. The number of the primary lateral roots from the main shoot also increased. On the other hand, the average length of the primary lateral root became shorter as the relative elevation became higher.
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