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Development of integrated terrestrial biogeochemical model simulating reactive nitrogen dynamics

Research Project

Project/Area Number 17H01867
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Ito Akihiko  国立研究開発法人国立環境研究所, 地球環境研究センター, 室長 (70344273)

Co-Investigator(Kenkyū-buntansha) 豊田 栄  東京工業大学, 物質理工学院, 准教授 (30313357)
仁科 一哉  国立研究開発法人国立環境研究所, 地域環境研究センター, 主任研究員 (60637776)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords一酸化二窒素 / 農地施肥 / 生態系モデル / 窒素循環 / 地球温暖化 / 環境汚染 / 安定同位体 / 生物地球化学モデル / 窒素管理 / 気候変動 / 広域スケール / 温室効果ガス / 生物地球化学 / モデル解析 / 窒素動態 / 施肥 / 流域スケール / 反応性窒素 / 陸域生態系 / 物質循環モデル
Outline of Final Research Achievements

This study developed an integrated model of reactive nitrogen dynamics in terrestrial ecosystems on the basis of biogeochemical processes. The model enables us to simulate nitrogen dynamics from inputs by atmospheric deposition, biological nitrogen fixation, and fertilization in croplands to outputs by gaseous emissions and nitrate leaching. The model has a simple structure so that it is applicable to regional scales and long-term periods. Particularly, we refined the estimation of nitrous oxide, a greenhouse gas, on the basis of meta-analysis of nitrification. We applied the model to estimate nitrous oxide emission from East Asia during the historical period.

Academic Significance and Societal Importance of the Research Achievements

温室効果ガスである一酸化二窒素の放出量を広域スケールで評価し、その変動原因を推定することが可能になったことは、温暖化対策に寄与する知見である。生態系における反応性窒素動態を統合的に扱うモデルは、河川への窒素流出、農地からの窒素酸化物放出など、様々な環境問題に応用可能である。アジア地域の窒素動態は農地施肥や大気沈着量の増加により強い影響を受けており、今後の対策立案に有用な手法を開発した。

Report

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

    (17 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (5 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Int'l Joint Research] Auburn University/Iowa State University(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Chinese Academy of Science/Peking University(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Auburn University/Iowa State University/University of Maryland(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Chinese Academy of Science(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Quebec(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Fraction of nitrous oxide production in nitrification and its effect on total soil emission: A meta-analysis and global-scale sensitivity analysis using a process-based model2019

    • Author(s)
      Inatomi Motoko、Hajima Tomohiro、Ito Akihiko
    • Journal Title

      PLOS ONE

      Volume: 14 Issue: 7 Pages: e0219159-e0219159

    • DOI

      10.1371/journal.pone.0219159

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Weakened growth of cropland‐N2O emissions in China associated with nationwide policy interventions2019

    • Author(s)
      Shang Z.、Z. Feng、Smith P.、Saikawa E.、Ciais P.、Chang J.、Tian H.、Del Grosso S. J.、Ito A.、Chen M.、Wang Q.、Bo Y.、Cui X.、Castaldi S.、Juszczak R.、K.、Magliulo V.、Medinets S.、M. Volodymyr、R. Robert M.、W. Georg、S. Simone
    • Journal Title

      Global Change Biology

      Volume: 25 Issue: 11 Pages: 3706-3719

    • DOI

      10.1111/gcb.14741

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Global soil nitrous oxide emissions since the preindustrial era estimated by an ensemble of terrestrial biosphere models: Magnitude, attribution, and uncertainty2019

    • Author(s)
      Hanqin Tian, Akihiko Ito, et al.
    • Journal Title

      Global Change Biology

      Volume: 25 Issue: 2 Pages: 640-659

    • DOI

      10.1111/gcb.14514

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Emissions of nitrous oxide (N2O) from soil surfaces and their historical changes in East Asia: a model-based assessment2018

    • Author(s)
      Akihiko Ito , Kazuya Nishina, Kentaro Ishijima, Shoji Hashimoto, Motoko Inatomi
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 5 Issue: 1 Pages: 55-55

    • DOI

      10.1186/s40645-018-0215-4

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 東アジアおよびユーラシア陸 域における温室効果ガス収支の広域評価2020

    • Author(s)
      伊藤昭彦
    • Organizer
      第131回日本森林学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アジアから高緯度帯の陸域温室効果ガス収支に関するボトムアップ評価2020

    • Author(s)
      伊藤昭彦
    • Organizer
      日本農業気象学会2020年全国大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Bottom-up mapping of GHG budget in Asian and northern regions2019

    • Author(s)
      Akihiko Ito
    • Organizer
      American Geophysical Union 2019 Fall Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Model studies for mining flux data: empirical, process-based, and machine learning2019

    • Author(s)
      Akihiko Ito and Kazuhito Ichii
    • Organizer
      AsiaFlux 20th anniversary Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Emissions of nitrous oxide (N2O) from soil surfaces and their historical changes in East Asia: a model-based assessment2018

    • Author(s)
      Akihiko Ito , Kazuya Nishina, Kentaro Ishijima, Shoji Hashimoto, Motoko Inatomi
    • Organizer
      iLEAPS-Japan Workshop
    • Related Report
      2018 Annual Research Report
  • [Presentation] 東アジア森林生態系における温室効果ガス収支の長期変動に関するモデル解析2018

    • Author(s)
      伊藤昭彦
    • Organizer
      日本森林学会129回大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] パリ協定に向けた陸域生態系モデルによる温室効果ガス収支評価2018

    • Author(s)
      伊藤昭彦
    • Organizer
      JapanFlux 10周年記念集会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] N2O studies by VISIT2017

    • Author(s)
      Akihiko Ito
    • Organizer
      Regional and Global N Input Datasets and Global N2O Modeling
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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