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Response of circumboreal forest to climate change: tree-ring, satellite images and modeling approaches

Research Project

Project/Area Number 17K12810
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Research InstitutionHokkaido University

Principal Investigator

Tei Shunsuke  北海道大学, 北極域研究センター, 博士研究員 (40710661)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords樹木年輪 / 地球衛星観測 / 全球気候モデル / 炭素循環 / 周北極域 / 森林生態系 / 衛星観測 / 気候モデル / 気候変動
Outline of Final Research Achievements

We investigated tree-ring and satellite observation based estimates for circumboreal forest response to climate changes under the same analysis condition. These estimates were then used as validation data of ecosystem carbon uptake in global climate models. The significant negative effect of warming on tree radial growth, which has been well reported in previous tree-ring studies, has been observed by satellite observation based estimate as well. Our results indicate that current global climate models could not reproduce the negative effect and tended to show an overly positive response to both past temperature and precipitation changes.

Academic Significance and Societal Importance of the Research Achievements

本研究では、周北極域における樹木年輪および衛星植生指数変動と過去の気候変動との対応関係を同一解析条件下で求めた。このような基礎的データの提供は、これまでほとんど地球温暖化に関する政府間パネル(IPCC)の評価報告書に取り上げられてこなかった樹木年輪生態学的研究および衛星観測データ(植生指数)研究の価値の再構築につながり、広い分野に波及効果をもたらすと考えられる。また、本成果は、全球気候モデルの生態系炭素収支過程の高度化に資することが可能である。その高度化が達成されれば、全球気候モデルの将来予測の不確実性の減少を通して全球の気候変動予測に大きな影響を与える。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Strong and stable relationships between tree-ring parameters and forest-level carbon fluxes in a Siberian larch forest2019

    • Author(s)
      Shunsuke Tei, Atsuko Sugimoto, Ayumi Kotani, Takeshi Ohta, Tomoki Morozumi, Soma Saito, Shuhei Hashiguchi, Trofim Maximov
    • Journal Title

      Polar Science

      Volume: 印刷中 Pages: 146-157

    • DOI

      10.1016/j.polar.2019.02.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of climate dataset type on tree-ring analysis: A case study for Siberian forests2018

    • Author(s)
      Shunsuke Tei, Shin Nagai, Atsuko Sugimoto
    • Journal Title

      Polar Science

      Volume: 印刷中 Pages: 136-145

    • DOI

      10.1016/j.polar.2018.10.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time lag and negative responses of forest greenness and tree growth to warming over circumboreal forests2018

    • Author(s)
      Shunsuke Tei, Atsuko Sugimoto
    • Journal Title

      Global Change Biology

      Volume: 印刷中 Issue: 9 Pages: 4225-4237

    • DOI

      10.1111/gcb.14135

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Response of forest productivity to climate change over circum-arctic region: tree-ring, satellite images and modeling approaches2019

    • Author(s)
      鄭 峻介, 杉本 敦子
    • Organizer
      第66回日本生態学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Time lag and negative responses of forest greenness and tree growth to warming over circumboreal forests2018

    • Author(s)
      鄭 峻介, 杉本 敦子
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Time-lag effect of forest productivity response to climate change over the circum-Arctic deduced from satellite images and tree rings2018

    • Author(s)
      Shunsuke Tei, Atsuko Sugimoto
    • Organizer
      ISAR-5 / Fifth International Symposium on Arctic Research
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Time-lag effects of forest ecosystem response to climate change in continental dry climate zones over the circum-Arctic; a multiple approach using satellite images and tree-rings analyses2017

    • Author(s)
      鄭 峻介, 杉本 敦子、マキシモフ トロフィム
    • Organizer
      日本地球惑星科学連合2017年大会
    • Related Report
      2017 Research-status Report
  • [Presentation] A perspective for observations on ecosystem response in the Arctic2017

    • Author(s)
      鄭 峻介, 杉本 敦子
    • Organizer
      日本地球惑星科学連合2017年大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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