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Does the fragmentation of canopy in tropical forests promote the mortality of canopy trees? The mechanism of gap expansion.

Research Project

Project/Area Number 23405024
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Forest science
Research InstitutionShizuoka University

Principal Investigator

MIZUNAGA Hiromi  静岡大学, (連合)農学研究科(研究院), 教授 (20291552)

Co-Investigator(Kenkyū-buntansha) NARAMOTO Masaaki  静岡大学, 農学研究科, 准教授 (10507635)
KOBAYASHI Shigeo  京都大学, アジアアフリカ地域研究研究科, 教授 (40353685)
UCHIDA Takanori  九州大学, 応用力学研究所, 准教授 (90325481)
YONEDA Tsuyoshi  鹿児島大学, 農学部, 教授 (40110796)
Project Period (FY) 2011-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2011: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords林冠木 / 風 / 林冠分断 / 樹冠 / 熱帯 / 葉分布構造 / 風害 / 耐転倒モーメント / 林冠木衰退 / 樹冠構造 / 孤立化 / 林冠トポグラフィー / ギャップ拡大 / 風動態
Outline of Final Research Achievements

Our primary objective is to evaluate the physical and physiological impact of canopy fragmentation on canopy trees, through predicting the change in micro environment, especially wind synopsis, around canopy trees caused by the fragmentation.
We determined 3-dimensional leaf distribution of 64 canopy trees using terrestrial laser scanning method. The leaf distribution, the combination of leaf area index and the clumping structure determined the drag relations against crown with simple equation. The wind environment on canopy related to the complexity of canopy structure created by gaps. We also clarified the property of turning moment in tropical trees to use for the evaluation of wind damage risks. We could not observe clear relationship between the decline in canopy trees and the location from canopy gaps in both a seasonal forest in Vietnam and a rain forest in Malaysia.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (8 results)

All 2015 2014 2013 2012

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results)

  • [Journal Article] Effects of components of the leaf area distribution on drag2015

    • Author(s)
      Kenji Kitagawa • Shintaro Iwama • Sho Fukui • Yuuki Sunaoka •
    • Journal Title

      European journal of forest research

      Volume: 134 Issue: 3 Pages: 403-414

    • DOI

      10.1007/s10342-014-0859-6

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Leaves for flexibility in silviculture, leaf distribution as a tool for evaluating diverse silvicultural operations2014

    • Author(s)
      Hiromi Mizunaga
    • Organizer
      The 9th IUFRO international conference on uneven-aged silviculture
    • Place of Presentation
      WSL,チュ-リッヒ,スイス
    • Year and Date
      2014-06-17 – 2014-06-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 林冠疎開によるヒノキの水ストレス応答2014

    • Author(s)
      辻村史晃 楢本正明
    • Organizer
      日本森林学会
    • Place of Presentation
      大宮ソニック(埼玉県)
    • Related Report
      2013 Annual Research Report
  • [Presentation] ベトナム北部人工林の風撹乱耐性 根系支持力からのアプローチ2013

    • Author(s)
      水永博己 岩間慎太郎 福井翔羽
    • Organizer
      熱帯生態学会
    • Place of Presentation
      九州大学(福岡県)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 間伐シナリオ別に見た、LESによる林冠上部の突風率の解析2013

    • Author(s)
      岩間慎太郎
    • Organizer
      日本森林学会
    • Place of Presentation
      岩手大学(岩手県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 林冠疎開されたヒノキのストレス評価2013

    • Author(s)
      辻村史晃
    • Organizer
      日本森林学会
    • Place of Presentation
      岩手大学(岩手県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] ベトナム北部人工林の風撹乱耐性 根系支持力からのアプローチ2013

    • Author(s)
      水永博己
    • Organizer
      日本熱帯生態学会
    • Place of Presentation
      九州大学(福岡県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] Resistance of semi-evergreen canopy trees against wind damages in Cuc Phuong Natinal Park, Vietnam2012

    • Author(s)
      Hiromi Mizunaga, Bich Nguen, Trieu Dang, Takaharu Mochizuki, Shintaro Iwama
    • Organizer
      日本森林学会
    • Place of Presentation
      宇都宮大学(栃木県)
    • Year and Date
      2012-03-28
    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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