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Determinant of primary succession in post-landslide forests and development of afforestation technique by using nitrogen fixing plant

Research Project

Project/Area Number 19H02986
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 40010:Forest science-related
Research InstitutionHokkaido University

Principal Investigator

Kobayashi Makoto  北海道大学, 北方生物圏フィールド科学センター, 准教授 (60719798)

Co-Investigator(Kenkyū-buntansha) 内海 俊介  北海道大学, 地球環境科学研究院, 教授 (10642019)
山田 孝  北海道大学, 農学研究院, 教授 (20333635)
吉田 俊也  北海道大学, 北方生物圏フィールド科学センター, 教授 (60312401)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Keywords気候変動 / 撹乱 / 生態系修復 / 窒素固定植物 / 土壌ー植物系 / 豪雨 / 野外操作実験 / 天然更新 / 山腹崩壊 / 機能形質 / 極端現象 / 人工降雨実験 / 土砂流出 / 鹿食害 / 根の形質 / 地表徘徊生昆虫 / 植生回復 / 生物多様性 / 森林再生 / シカ / 土砂崩れ / 豪雨災害 / 植生遷移 / 生態系サービス / 土地利用 / 土砂流亡 / 大規模野外捜査実験 / 一次遷移 / 生態系機能 / 地すべり / 植生の一次遷移
Outline of Research at the Start

北海道大学研究林の斜面において、重機を用いて多地点で同程度の広さおよび強度の山腹崩壊を模倣する地はぎ実験を実施する。 その後、種子の散布量、土壌窒素量、表層土砂の移動量に注目し、どの要因が山腹崩壊後初期の植生の現存量や植食性昆虫の種多様性の回復を強く制限しているのか、制限の強さは立地によって変化するのかを検証する。さらに、山腹崩壊跡地の積極的な植生回復を目指し、これまで単一種のみ用いられてきた窒素固定植物の植栽について、複数の窒素固定植物種を混植する条件を設け、その植生の現存量や生物多様性回復への効果を比較する。

Outline of Final Research Achievements

To obtain the useful information for the restoration after landslides, this project was conducted to answer following three questions. 1: Do which environmental factors regulate the natural recovery of vegetation after landslides? 2: When planting N-fixing plants after landslide, what should we care for? 3: How do the extreme precipitation influence the seedlings planted after landslides? This project clarified, 1: water stress regulate the natural recovery of vegetation after landslides, 2: Even within the N-fixing plants, the suitable habitatr for the survival is different among several the post-landslides forests, 3: the extreme precipitation decrease the wood density and leaf thickness of the plants planted after landslides.

Academic Significance and Societal Importance of the Research Achievements

気候変動に伴って今後増加していく山腹崩壊とその跡地の森林。今回のプロジェクトで得られた”どのような山腹跡地が回復しにくいか、回復しにくい場所に積極的に樹木を植栽する上ではどのような場所にーどの樹種を植えるのが効果的か”という知見は、そうした山腹崩壊跡地をできるだけ速やかに回復させ、森林の近隣にある人々の暮らしを安全なものにし、持続可能な社会を構築していく上で重要となる。また、学術的な意義としては、30箇所という膨大な数の人工山腹崩壊跡地を設定し、崩壊地の環境と樹木のパフォーマンスの関係を網羅的に解析することで、世界で初めて山腹崩壊地の生態系回復指針を立てる上で普遍的な知見を得ることができた。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (20 results)

All 2024 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (7 results) (of which Invited: 1 results) Book (1 results) Remarks (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Umea University(スウェーデン)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Nevada, Las Vegas(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Umea University(スウェーデン)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Which native legume or non-legume nitrogen-fixing tree is more efficient in restoring post-landslide forests along an environmental gradient?2024

    • Author(s)
      Makoto Kobayashi、Utsumi Shunsuke、Zeng Ruiqi、Mamiya Wataru、Miyazaki Tohru、Okuyama Tomohiro、Tanaka Fumiya、Yamada Takashi、Yoshida Toshiya
    • Journal Title

      Forest Ecology and Management

      Volume: 554 Pages: 121672-121672

    • DOI

      10.1016/j.foreco.2023.121672

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Is the Fine Root Tensile Strength Predictable from Structural and Morphological Traits across Mycorrhizal Types in Cool-Temperate Woody Species?2023

    • Author(s)
      Zeng Ruiqi、Makoto Kobayashi
    • Journal Title

      Forests

      Volume: 14 Issue: 8 Pages: 1542-1542

    • DOI

      10.3390/f14081542

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] How do leaf functional traits and age influence the maximum rooting depth of trees?2023

    • Author(s)
      Makoto Kobayashi、Kitagawa Ryo、Blume-Werry Gesche
    • Journal Title

      European Journal of Forest Research

      Volume: 142 Issue: 5 Pages: 1197-1206

    • DOI

      10.1007/s10342-023-01585-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A large‐scale field experiment of artificially caused landslides with replications revealed the response of the ground‐dwelling beetle community to landslides2023

    • Author(s)
      Furusawa Jumpei、Makoto Kobayashi、Utsumi Shunsuke
    • Journal Title

      Ecology and Evolution

      Volume: 13 Issue: 3 Pages: 1-12

    • DOI

      10.1002/ece3.9939

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] The effect of experimental extreme precipitation on the performance of trees planted after landslides2024

    • Author(s)
      Ruiqi Zeng, Makoto Kobayashi
    • Organizer
      第135回日本森林学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Context dependent usefulness of nitrogen fixing trees for the restoration after landslides in sub-boreal forests2023

    • Author(s)
      Makoto Kobayashi, Toshiya Yoshida, Takashi Yamada, Shunsuke Utsumi
    • Organizer
      IBFRA Conference 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Towards an enhanced use of nitrogen fixing trees for the restoration after landslides2023

    • Author(s)
      Makoto Kobayashi
    • Organizer
      第70回日本生態学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 山腹崩壊が起きたとき徘徊性昆虫はどう応答するのか?大規模野外実験で明らかにする2023

    • Author(s)
      古澤惇平, 小林真, 内海俊介
    • Organizer
      第70回日本生態学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 山腹崩壊跡地で成長がよい窒素固定植物の特性と立地条件の検証2022

    • Author(s)
      小林 真・内海俊介・山田 孝・曾 瑞琪・門脇浩明・ 吉田俊也
    • Organizer
      第133回日本森林学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 地表かき起こし施業からの経過年数に伴うミミズ群集の回復と団粒発達2022

    • Author(s)
      河上智也・片山 昇・西澤啓太・小林勇太・鈴木紅葉・ 森 章・小林 真
    • Organizer
      第133回日本森林学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 山腹崩壊は徘徊性昆虫群集をガラリと変える?~大規模実験による検証~2022

    • Author(s)
      古澤惇平・小林真・内海俊介
    • Organizer
      日本生態学会第69回全国大会
    • Related Report
      2021 Annual Research Report
  • [Book] 木本植物の被食防衛: 変動環境下でゆらぐ植食者との関係2023

    • Author(s)
      小林真 (分担執筆)
    • Total Pages
      280
    • Publisher
      共立出版
    • ISBN
      4320058402
    • Related Report
      2022 Annual Research Report
  • [Remarks] MAKOTO'S PLANT & SOIL LAB.

    • URL

      https://makoto-plant-soil.weebly.com

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Remarks] Experimental Landslide Project

    • URL

      https://landslide-project.weebly.com

    • Related Report
      2021 Annual Research Report
  • [Remarks] Experimental landslide project

    • URL

      https://landslide-project.weebly.com

    • Related Report
      2020 Annual Research Report
  • [Remarks] Experimental landslide project

    • URL

      https://landslide-project.weebly.com/

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] 第70回日本生態学会シンポジウム 山腹崩壊と生態系修復: より良いNature-based solutionを目指して2023

    • Related Report
      2022 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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