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The influence of collision between trees on formation of tree shape

Research Project

Project/Area Number 15K14764
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Forest science
Research InstitutionForestry and Forest Products Research Institute

Principal Investigator

Goto Yoshiaki  国立研究開発法人森林総合研究所, 森林災害・被害研究拠点, 拠点長 (20353683)

Co-Investigator(Kenkyū-buntansha) 鈴木 覚  国立研究開発法人森林総合研究所, 森林防災研究領域, 室長 (50353735)
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords樹形 / 強風 / 衝突 / 風力 / 固有振動数
Outline of Final Research Achievements

The sway of Pinus thunbergii trees was investigated in Muramatsu coastal forest, Ibaraki Prefecture and Nishinohama coastal forest, Aichi Prefecture.The investigated trees showed clear natural frequencies, and the larger the distance between individuals, the greater the difference in natural frequencies. Collision was avoided by swaying in the same direction at the same time in the strong frequency domain of wind energy. Also, it was suggested that the possibility of avoiding or reducing the collision by adjusting the natural frequency according to the distance between the individual in the vicinity of the natural frequency. The moment acting on investigated trees varied depending on the size of the surrounding space. The possibility that the tree shape was regulated in part by the size of the surrounding space through the moment and the natural frequencies was suggested.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (1 results)

All 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Wind damage risk estimation for strip cutting under current and future wind conditions based on moment observations in a coastal forest in Japan.2016

    • Author(s)
      Satoru Suzuki, Tomoki Sakamoto, Hironori Noguchi
    • Journal Title

      Journal of Forest Research

      Volume: 21 Issue: 5 Pages: 223-234

    • DOI

      10.1007/s10310-016-0539-0

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2015-04-16   Modified: 2018-03-22  

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