• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Tree-mediated methane emissions from wetland soils: controlling factors and mechanisms of CH4 emission in the mid- and high-latitude regions.

Research Project

Project/Area Number 17H03834
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Forest science
Research InstitutionTokyo University of Agriculture

Principal Investigator

TERAZAWA Kazuhiko  東京農業大学, 生物産業学部, 教授 (30414262)

Co-Investigator(Kenkyū-buntansha) 常田 岳志  国立研究開発法人農業・食品産業技術総合研究機構, 農業環境変動研究センター, 主任研究員 (20585856)
渡邊 陽子  北海道大学, 農学研究院, 研究員 (30532452)
阪田 匡司  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 (50353701)
森下 智陽  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 (90391185)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Keywords温室効果ガス / メタン / 湿地 / 樹木 / ハンノキ / ヤチダモ / 針葉樹 / 幹 / 湿原 / 北方林 / 皮目 / メタンフラックス / 気候変動 / 湿地林 / 樹幹 / 地球温暖化 / 湿地生態系 / 樹幹メタン放出 / 冷温帯林 / メタンソース / 木材中のガス移動
Outline of Final Research Achievements

In the temperate wetlands in northern Japan, effects of environmental variables on stem methane (CH4) flux were statistically analyzed and several responsible factors, such as soil and climatic ones, were detected. Difference in stem CH4 flux between two coexisting tree species was clearly observed. In the boreal wetlands in Alaska and Estonia, a small amount of CH4 emission was detected from stems of the dominant conifer species of each region, but the contributions of trees to the overall CH4 emissions from the wetland ecosystems were estimated to be small.
Field and laboratory experiments gave us some new insights on the underlying mechanisms of tree-mediated CH4 emission, such as source, pathway, and diffusivity of CH4 in the tree stem. Anatomical features of tree stems and roots were microscopically observed with special attention to the function of internal gas transport for several temperate hardwood species, and some possible structures were found in a part of secondary phloem.

Academic Significance and Societal Importance of the Research Achievements

湿地の樹木からのメタン放出を地球全体のメタン収支の中に位置づけて正当に評価するには、樹木からのメタン放出量の時空的な変動要因と放出メカニズムを明らかにし、それらの要素を組み込んだモデルを作成して、生態系から地域、さらに地球全体へスケールアップして放出量を推定する必要がある。
本研究では、中緯度地域での樹幹メタン放出量の解析を行って変動要因を明らかにするとともに、実験を通じて放出メカニズムの一端を明らかにした。また、観測例の少ない高緯度地域の湿地での樹幹メタン放出の実態を示した。これらの研究成果は、湿地生態系における樹木を介したメタン放出機構の理解の進展とその全球的評価に寄与するものである。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Products Report
  • Research Products

    (9 results)

All 2021 2020 2018 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] IARC, University of Alaska Fairbanks(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Institute of Ecology, Tallinn University(エストニア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Seasonal and weather-related controls on methane emissions from the stems of mature trees in a cool-temperate forested wetland2021

    • Author(s)
      Kazuhiko Terazawa, Takeshi Tokida, Tadashi Sakata, Kenji Yamada, Shigehiro Ishizuka
    • Journal Title

      Biogeochemistry

      Volume: 156 Issue: 2 Pages: 211-230

    • DOI

      10.1007/s10533-021-00841-4

    • Related Report
      Products Report
    • Peer Reviewed
  • [Journal Article] Methane emissions from tree stems: a new frontier in the global carbon cycle2018

    • Author(s)
      Barba Josep、Bradford Mark A.、Brewer Paul E.、Bruhn Dan、Covey Kristofer、Haren Joost、Megonigal J. Patrick、Mikkelsen Teis Norgaard、Pangala Sunitha R.、Pihlatie Mari、Poulter Ben、Rivas‐Ubach Albert、Schadt Christopher W.、Terazawa Kazuhiko、Warner Daniel L.、Zhang Zhen、Vargas Rodrigo
    • Journal Title

      New Phytologist

      Volume: 222 Issue: 1 Pages: 18-28

    • DOI

      10.1111/nph.15582

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 北海道東部の泥炭湿地林における土壌メタンの放出動態2020

    • Author(s)
      寺澤和彦・阪田匡司・常田岳志・山田健四・石塚成宏
    • Organizer
      第131回日本森林学会大会(2020年3月29日:名古屋市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 湿地性樹木樹皮の通気に関わる組織構造の観察2020

    • Author(s)
      渡邊陽子・関野一喜・森下智陽・寺澤和彦
    • Organizer
      第70回日本木材学会大会(2020年3月17日:鳥取市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Vertical patterns of CH4 emission along tree stems of Alnus japonica and Fraxinus mandshurica2018

    • Author(s)
      Kazuhiko Terazawa, Kenji Yamada, Tadashi Sakata, Shigehiro Ishizuka
    • Organizer
      12th International Symposium on Biogeochemistry of Wetlands
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ハンノキ湿地林における樹幹からのメタン放出量とその変動要因2018

    • Author(s)
      寺澤 和彦・小川 舞・川和 美香 ・阪田 匡司・石塚 成宏
    • Organizer
      第129回 日本森林学会大会 (高知市、2018年3月28日)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Vertical patterns of CH4 emission along tree stems of Alnus japonica and Fraxinus mandshurica2018

    • Author(s)
      Kazuhiko Terazawa, Kenji Yamada, Tadashi Sakata, Shigehiro Ishizuka
    • Organizer
      12th International Symposium on Biogeochemistry of Wetlands ( Coral Springs, FL, USA, April 24, 2018)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2017-04-28   Modified: 2023-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi