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Vulnerability of larch trees to extreme climate events in permafrost ecosystem of Eastern Siberia

Research Project

Project/Area Number 20K19950
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 63010:Environmental dynamic analysis-related
Research InstitutionForest Research and Management Organization

Principal Investigator

Tei Shunsuke  国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (40710661)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords樹木年輪 / 気候変動 / 極端気象 / 東シベリア / カラマツ / 脆弱性 / 永久凍土 / 異常気象
Outline of Research at the Start

北半球高緯度域、東シベリアの永久凍土帯では、気温上昇に伴う豪雨などの異常気象の頻度増加が観測・予測されている。近年、異常気象による樹木衰弱・枯死も報告され始めている。本研究では、東シベリアのタイガ林、及びタイガ-ツンドラ境界域において、優占樹種であるカラマツの年輪幅を指標として、異常気象に対する樹木の応答・脆弱性を明らかにする。近年の気候変動で急変している東シベリア生態系の変動の理解を深め、将来の気候変動下において、事前の予測に基づいて先に対策を講じることで生態系の回復力を維持する、予見的適応策決定に必要な科学的根拠を提供する。

Outline of Final Research Achievements

Due to the coronavirus disease (COVID-19) and the Russian-Ukrainian crisis, I am unable to conduct the originally planned field survey in Eastern Siberia. Therefore, I shifted to data analysis with tree-ring width chronologies of 33 sites in Eastern Siberia (60<N, 120<E<150) that are registered in the International Tree-Ring Data Bank. As a result, I found that sites with low resilience to past extreme climate events (especially extreme low temperatures) are predominantly distributed in the eastern part of eastern Siberia. In addition, the low resilience of sites located in the eastern part of eastern Siberia was found to be more pronounced in comparison with sites in central and far eastern Siberia.

Academic Significance and Societal Importance of the Research Achievements

本成果は、全球的に理解が進んでいない極端気象に対する樹木応答・脆弱性について、近年の気候変動下で急変している東シベリア森林生態系を対象として評価したものであり、同生態系動態の理解の深化に貢献する。また、本成果は、生態系モデルの貴重な検証データとして利用可能であり、モデルの高度化を通して、将来の気候変動下における森林動態予測高度化への貢献が期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2024 2023 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (6 results)

  • [Journal Article] Arctic Plant Responses to Summer Climates and Flooding Events: A Study of Carbon and Nitrogen-Related Larch Growth and Ecosystem Parameters in Northeastern Siberia2023

    • Author(s)
      Maochang Liang, Atsuko Sugimoto, Shunsuke Tei, Shinya Takano, Tomoki Morozumi, Ryo Shingubara, Jun Murase, Trofim C. Maximov
    • Journal Title

      Journal of Geophysical Research: Biogeosciences

      Volume: 128 Issue: 10

    • DOI

      10.1029/2022jg007135

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia2023

    • Author(s)
      Aleksandr Nogovitcyn, Ruslan Shakhmatov, Tomoki Morozumi, Shunsuke Tei, Yumiko Miyamoto, Nagai Shin, Trofim C. Maximov, Atsuko Sugimoto
    • Journal Title

      Biogeosciences

      Volume: 20 Issue: 15 Pages: 3185-3201

    • DOI

      10.5194/bg-20-3185-2023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Changes in Forest Conditions in a Siberian Larch Forest Induced by an Extreme Wet Event2022

    • Author(s)
      Aleksandr Nogovitcyn、Ruslan Shakhmatov、MOROZUMI Tomoki、TEI Shunsuke、MIYAMOTO Yumiko、NAGAI Shin、Trofim C. Maximov、SUGIMOTO Atsuko
    • Journal Title

      forests

      Volume: 13(8) Issue: 8 Pages: 1331-1331

    • DOI

      10.3390/f13081331

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Geographical, Climatological, and Biological Characteristics of Tree Radial Growth Response to Autumn Climate Change2021

    • Author(s)
      Tei Shunsuke、Kotani Ayumi、Sugimoto Atsuko、Shin Nagai
    • Journal Title

      Frontiers in Forests and Global Change

      Volume: 4

    • DOI

      10.3389/ffgc.2021.687749

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stable Water Isotope Assessment of Tundra Wetland Hydrology as a Potential Source of Arctic Riverine Dissolved Organic Carbon in the Indigirka River Lowland, Northeastern Siberia2021

    • Author(s)
      Takano Shinya、Yamashita Youhei、Tei Shunsuke、Liang Maochang、Shingubara Ryo、Morozumi Tomoki、Maximov Trofim C.、Sugimoto Atsuko
    • Journal Title

      Frontiers in Earth Science

      Volume: 9 Pages: 699365-699365

    • DOI

      10.3389/feart.2021.699365

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Seasonal variations in carbon dioxide exchange fluxes at a taiga?tundra boundary ecosystem in Northeastern Siberia2021

    • Author(s)
      Tei Shunsuke、Morozumi Tomoki、Kotani Ayumi、Takano Shinya、Sugimoto Atsuko、Miyazaki Shin、Shingubara Ryo、Fan Rong、Petrov Roman、Starostin Egor、Shakhmatov Ruslan、Nogovitcyn Aleksandr、Maximov Trofim
    • Journal Title

      Polar Science

      Volume: - Pages: 100644-100644

    • DOI

      10.1016/j.polar.2021.100644

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Excessive positive response of model‐simulated land net primary production to climate changes over circumboreal forests2020

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

      Plant-Environment Interactions

      Volume: 1 Issue: 2 Pages: 102-121

    • DOI

      10.1002/pei3.10025

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Tree growth vulnerability to severe drought and cold events in Eastern Siberia2024

    • Author(s)
      TEI Shunsuke
    • Organizer
      日本生態学会第71回全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Responses of tree radial growth to climate changes in central Siberia deduced from dendro-ecological approach2023

    • Author(s)
      TEI Shunsuke、Darshana Athukorala、Dmitry Schepaschenko、Liudmila Mukhortova、Sergey Farber、Leonid Krivobokov、Nastassia Sokolova、Ekaterina Tyutkova、Alexsey Martynov、NAGAI Shin、TAKAO Gen
    • Organizer
      日本地球惑星科学連合大会(2023)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Spatio-temporal variation in vulnerability and resilience of tree radial growth to climate changes in Eastern Siberia2022

    • Author(s)
      鄭峻介
    • Organizer
      日本地球惑星科学連合2022年大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Tree growth response to seasonal climate variability in mid- and high-latitudes of the Northern Hemisphere2022

    • Author(s)
      鄭峻介, 小谷亜由美、永井信
    • Organizer
      第69回日本生態学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Vulnerability and resilience of larch tree growth to climate changes in eastern Siberia2022

    • Author(s)
      Shunsuke Tei
    • Organizer
      International Symposium on ”Pan-Arctic Water -Carbon Cycles and Terrestrial Changes in the Arctic: For resilient Arctic Communities"
    • Related Report
      2021 Research-status Report
  • [Presentation] Vulnerability and resilience of tree radial growth over eastern Siberia under climate changes.2021

    • Author(s)
      鄭峻介
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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