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2004 Fiscal Year Final Research Report Summary

Vegetation dynamics and environmental change in the ecotonal zone of upper subalpine belt on Mount Fuji

Research Project

Project/Area Number 14580104
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 自然地理学
Research InstitutionTokyo Metropolitan University

Principal Investigator

OKA Shuichi  Tokyo Metropolitan University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (50106605)

Co-Investigator(Kenkyū-buntansha) KANNO Hiromitsu  National Agricultural Research Center for Tohoku Region, Head of the Research-team, 東北農業研究センター, 研究室長 (30355276)
Project Period (FY) 2002 – 2004
KeywordsMount Fuji / vegetation change / tree limit / vegetation dynamics / tree ring / freezing and thawing / stepped micro-relief / soil moisture
Research Abstract

The purpose of this study is to reveal the vegetation dynamics and its environmental agents in the ecotonal zone of upper subalpine belt on Mount Fuji. On the northwest slope, we conducted the following vegetation and environmental surveys: measurement of tree height and DBH, core sampling for tree ring analysis, surveying of topography, observation of air and soil temperatures and solar radiation, and so on. As a result, we could understand the tree height became lower, as the altitude grew higher with discontinuity. The tree height should match with the environmental gradient but with one's own age.
On this slope, a conspicuous stepped microrelief which might influence the vegetational distribution pattern is developed. Analyzing the process of this step formation seems to be deeply concerned with making clear the variation of vertical vegetation zone. In order to clarify the process of step formation, we have set two paint-lines on the step at 2800m asl. About a year after, we checked the movement of gravels along the paint-lines. They did move a little only on a step terrace but a cliff. According to the meteorological data at the study site, a freezing or thawing period which should control the peri glacial phenomenon is very short. Based on the larch growth form in this area, it should be blown constantly strong southeasterly. So, the step should be formed by wind-force and/or flow of water.
Furthermore, it's necessary to examine the relationship between the plant establishment and the environmental factors.

  • Research Products

    (12 results)

All 2004 2003 2002 2001

All Journal Article (12 results)

  • [Journal Article] Invasion of Leucaena leucocephala and its effects on the native plant community in the Ogasawara(Bonin) Islands2004

    • Author(s)
      Yoshida, K.
    • Journal Title

      Weed Technology 18

      Pages: 1371-1375

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Invasion of Leucaena leucocephala and its effects on the native plant community in the Ogasawara (Bonin) Islands2004

    • Author(s)
      YOSHIDA, K.
    • Journal Title

      Weed Technology 18

      Pages: 1371-1375

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 植物指標と土壌酸性度からみた火山噴火の影響2003

    • Author(s)
      岡 秀一
    • Journal Title

      地理 569

      Pages: 38-44

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 小笠原諸島南島における土壌侵食と植生変化2003

    • Author(s)
      岡 秀一
    • Journal Title

      小笠原研究 28

      Pages: 49-81

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 亜高山帯植生のハビタット分割様式の地理的変化2003

    • Author(s)
      丸岡英生
    • Journal Title

      日本生態学会誌 53

      Pages: 107-116

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] An influence of volcanic eruption based on plant indicator and soil Acidity2003

    • Author(s)
      OKA, S.
    • Journal Title

      Chiri 569

      Pages: 38-44

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Soil erosion and vegetation change on Minami-jima Island, the Ogasawara(Bonin) Islands2003

    • Author(s)
      OKA, S.
    • Journal Title

      Ogasawara Research 28

      Pages: 49-81

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Geographic variation in habitat differentiation of subalpine forests in northeastern Japan2003

    • Author(s)
      MARUOKA, H.
    • Journal Title

      Japanese Journal of Ecology 53

      Pages: 107-116

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 水文気候環境からみた小笠原諸島父島におげる乾性低木林の立地環境2002

    • Author(s)
      吉田圭一郎
    • Journal Title

      地学雑誌 111

      Pages: 711-725

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hydroclimatic conditions in subtropical dry scrub on Chichijima Island, the Ogasawara (Bonin) Islands2002

    • Author(s)
      YOSHIDA, K.
    • Journal Title

      Journal of Geography 111

      Pages: 711-725

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 20世紀の気候温暖化とスカンディナビア半島南部における樹木限界の上昇2001

    • Author(s)
      岡 秀一
    • Journal Title

      エコソフィア 8

      Pages: 79-80

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 20^<th> century climate warming and tree-limitrisein the southern Scandes of Sweden2001

    • Author(s)
      OKA, S
    • Journal Title

      Ecosophia 8

      Pages: 79-80

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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