Research on the tree-line dynamics and environmental change on Mount Fuji
| Project/Area Number |
17500702
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
OKA Shuichi Tokyo Metropolitan University, Graduate School of Urban Environmental Sciences, Associate Professor (50106605)
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| Co-Investigator(Kenkyū-buntansha) |
KANNO Hiromitsu National Agricultural Research Center for Tohoku Region, 東北農業研究センター, Head of the Resarch-team (30355276)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,110,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | tree-line / vegetation dynamics / tree-ring / tree-height / sere / strong wind / soil moisture / Mount Fuji / 群落動態 / 年輪 / 遷移系列 / 強風環境 / パッチ群落 / 実生 / 凍結融解 / 砂礫移動 |
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| Research Abstract |
The purpose of this study is to reveal the vegetation dynamics and its environmental agents around the tree-line on Mt. Fuji. An investigation was conducted into the relationship between slope processes and plant community structure on the north-western slope of Mt. Fuji. A stepped microtopography has developed on this slope between 2700 m and 2950 m elevation, with a particularly well-defined structure identified between 2800 m and 2850 m. This stepped microtopography is almost certainly periglacial, and has been a foundation for the development of islands of plant communities. These communities are concentrated on the cliff sections of the steps, with virtually no growth observed on the flat, terrace sections. On the evidence of ground temperature monitoring and paint-line exposure experiments, gravel is unstable on the terraces and stable on the cliffs, and it is considered that distribution of vegetation has been determined by stability of the surface material. Composition of communities is diverse : on the upper slopes, Salix reiini is predominant and lichens are prominent. The lower slopes are dominated by arboreal species including Larix kaempferi and Betula ermanii. In addition, the annual rings of L kaempferi become few from lower to upper slopes, suggesting establishment at different periods. From these findings, it is predicted that primary succession of the tree line to a higher elevation will occur on the north-western slope of Mt. Fuji, using the stepped microtopography as a foundation. Furthermore, the analysis of the relationship between tree-height and tree-age has shown a tendency, in the lower altitude part the older the greater elongation growth, in the higher part the older the greater thickening growth not elongation one. This fact suggests that a larch scrub community is formed controlling by the length of exposure to the severe environment.
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Report
(4 results)
Research Products
(53 results)
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[Presentation] 日の出地域における森林利用の変遷2008
Author(s)
岡 秀一
Organizer
フォーラム多摩、里山の自然から学ぶ
Place of Presentation
東京(首都大学東京飯田橋キャンパス)
Year and Date
2008-03-26
Description
「研究成果報告書概要(和文)」より
Related Report
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