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Process model to determine the patch size without weeding operation. Micro-climate in thickets and the competition among plants

Research Project

Project/Area Number 26292082
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Forest science
Research InstitutionShizuoka University

Principal Investigator

Mizunaga Hiromi  静岡大学, 農学部, 教授 (20291552)

Co-Investigator(Kenkyū-buntansha) 楢本 正明  静岡大学, 農学部, 准教授 (10507635)
王 権  静岡大学, 農学部, 教授 (50402235)
飯尾 淳弘  静岡大学, 農学部, 准教授 (90422740)
Project Period (FY) 2014-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords下刈り / 低木の種特性 / 林冠構造と藪の発達 / 藪 / 微気象 / 炭素収支 / 微気象予測 / UAV / 下刈 / 競争 / 藪群落 / 微気象モデル / 林冠 / 個体SPAR / 葉三次元分布 / 低木群落 / 低木種
Outline of Final Research Achievements

For constructing the process model to find maximum patch size without weeding, 1) The relationships between the development of thicket and canopy topography on complex slopes, 2) Specific property of morphology and physiology in species rich communities, and 4) carbon budget and growth of target species were studied.
The light extinction in species mixed communities showed large variation and complex results due to the variable species composition and the large specific difference. The predicted specific extinction coefficient had no contradiction of 3D architecture of shrub leaf distribution. We synthesized the light environment by extinction of coefficient, photosynthetic parameters of target seedlings, UAV areal image of shrub communities and canopy topography in several patch selections, and discuss the possible patch size without weeding.

Academic Significance and Societal Importance of the Research Achievements

伐採と植栽が全国各地で促進されようとしている.しかしながら造林コストの40%以上を占める下刈りコストは主伐敬遠や皆伐後放棄地の増加の要因となっている.このため下刈りを省略する更新施業への期待が高まっている。択伐林や二段林は下刈り不要の代表的な造林システムであり、これらの施業は 共通して藪群落の発達を上木の林冠構造による被陰で制御する手法をとる。しかし林冠による光調節は地形など多様な因子で決定されるため、 経験的な情報から伐採方法を決定することは難しい。本研究は林冠構造-競争種の種特性-藪群落内の微気象を解析的に研究することで,下刈りを省略できる伐採面積を探索したものである

Report

(7 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (18 results)

All 2020 2019 2018 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] リュブリャナ大学(スロベニア)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Do Coarser Gap Mosaics in Conifer Plantations Induce More Seed Dispersal by Birds? Temporal Changes during 12 Years after Gap Creation2019

    • Author(s)
      Tsubasa Takano,Yohsuke Kominami and Hiromi Mizunaga
    • Journal Title

      Forests

      Volume: 10.918 Issue: 10 Pages: 1-15

    • DOI

      10.3390/f10100918

    • NAID

      120006778776

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interspecific differences in the hierarchical cluster structure of leaves within tree crowns in Indochina2018

    • Author(s)
      4. Mochizuki, T., Marod, D., Trieu, D.T., Mizunaga, H
    • Journal Title

      Tropics

      Volume: 27 Issue: 1 Pages: 1-24

    • DOI

      10.3759/tropics.MS17-07

    • NAID

      130007383364

    • ISSN
      0917-415X, 1882-5729
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] How does the longevity of Sasa kurilensis ramets respond to a light gradient? An analysis of ontogenetic changes to hydraulic resistance and carbon budget within a ramet2017

    • Author(s)
      Tsunoda Yuuki
    • Journal Title

      Ecological research

      Volume: 32 Issue: 2 Pages: 117-128

    • DOI

      10.1007/s11284-016-1423-2

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] 藪の中の競争を緩和するギャップサイズ探索2020

    • Author(s)
      水永博己・西山友紀乃
    • Organizer
      日本森林学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 低木の受光態勢の光環境可塑性は種によってどのように異なるのか2020

    • Author(s)
      石橋和明・水永博己
    • Organizer
      日本森林学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Complexity of leaf arrangement and ecosystem services in uneven-aged silviculture2019

    • Author(s)
      Hiromi Mizunaga
    • Organizer
      International conference on tropical silviculture
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 皆伐更新施業が進められる中で、林分・景観構造の複雑性の役割を考える2019

    • Author(s)
      水永博己
    • Organizer
      日本森林学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Competition in thickets developed in patch selection of conifer plantations2018

    • Author(s)
      Hiromi Mizunaga
    • Organizer
      IUFRO 1.0511th Uneven-aged silviculture workshop (Valdivia Chile)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 藪の中の微気象と成長 伐区をどこまで狭くすれば下刈りは不要となるのか?2018

    • Author(s)
      水永博己
    • Organizer
      日本森林学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 大きい林分材積成長量と明るい林床の折り合いのつけかたを探る2017

    • Author(s)
      水永博己 Juri Diaci
    • Organizer
      日本森林学会
    • Place of Presentation
      鹿児島大学(鹿児島県・鹿児島市)
    • Year and Date
      2017-03-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] Does complexity of leaf arrangement moderate the impact of drought stress?2016

    • Author(s)
      Hiromi Mizunaga
    • Organizer
      IUFRO 1.05
    • Place of Presentation
      Little Rock (USA)
    • Year and Date
      2016-05-30
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低木群落内木本種の受光体制を3次元構造で解析する2016

    • Author(s)
      濱野莉彩子
    • Organizer
      日本森林学会
    • Place of Presentation
      日本大学 神奈川県藤沢市
    • Year and Date
      2016-04-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 苗場山における環境勾配に伴うブナ個体内の葉群分布の特性と受光機能2015

    • Author(s)
      望月貴治・水永博己
    • Organizer
      日本森林学会
    • Place of Presentation
      北海道大学; 札幌市、北海道
    • Year and Date
      2015-03-27 – 2015-03-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 今須への道/ 葉分布は単木択伐人工林への誘導を実行可能でないと言っている?2015

    • Author(s)
      水永博己・大洞智宏
    • Organizer
      日本森林学会
    • Place of Presentation
      北海道大学、札幌市、北海道
    • Year and Date
      2015-03-27 – 2015-03-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] 混交低木群落内において光の不均質性は種ごとの生産能力に影響を及ぼすのか? ─種ごとの光利用特性と光獲得特性からの評価─2015

    • Author(s)
      川井祐介・八巻貴裕・水永博己
    • Organizer
      日本森林学会
    • Place of Presentation
      北海道大学、札幌市、北海道
    • Year and Date
      2015-03-27 – 2015-03-28
    • Related Report
      2014 Annual Research Report
  • [Presentation] Mixture of Species in Thickets Affects Penetrated Light Fleck2014

    • Author(s)
      Kawai Yusuke, Mizunaga hiromi
    • Organizer
      IUFRO 1.05 Uneven-aged silviculture
    • Place of Presentation
      WSL, zurich, Switzerland
    • Year and Date
      2014-06-16 – 2014-06-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] Leaves for silviculture; Leaf-distribution as a tool for evaluating diverse silvicultural operation2014

    • Author(s)
      Mizunaga Hiromi
    • Organizer
      IUFRO 1.05 Uneven-aged silviculture
    • Place of Presentation
      WSL; zurich, Switzerland
    • Year and Date
      2014-06-16 – 2014-06-19
    • Related Report
      2014 Annual Research Report

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Published: 2014-04-04   Modified: 2023-03-23  

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