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Precise examination of N2O production and consumption processes with MILNC

Research Project

Project/Area Number 18H04138
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 63:Environmental analyses and evaluation and related fields
Research InstitutionKyoto University

Principal Investigator

Koba Keisuke  京都大学, 生態学研究センター, 教授 (90311745)

Co-Investigator(Kenkyū-buntansha) 黒岩 恵  東京農工大学, 工学(系)研究科(研究院), 助教 (00761024)
勝山 千恵  広島大学, 統合生命科学研究科(総), 助教 (10580061)
寺田 昭彦  東京農工大学, 工学(系)研究科(研究院), 教授 (30434327)
渡邉 哲弘  京都大学, 地球環境学堂, 准教授 (60456902)
仁科 一哉  国立研究開発法人国立環境研究所, 地球システム領域, 主任研究員 (60637776)
内田 義崇  北海道大学, 農学研究院, 准教授 (70705251)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥44,720,000 (Direct Cost: ¥34,400,000、Indirect Cost: ¥10,320,000)
Fiscal Year 2021: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2020: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2019: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2018: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Keywords窒素循環 / 一酸化二窒素 / 安定同位体トレーサー / 脱窒 / 硝化 / 重窒素 / 重酸素 / 安定同位体
Outline of Final Research Achievements

We developed the analytical setting of multi-isotope labelling of nitrogen compounds (MILNC) for N2O to elucidate the complex features of N2O productions and consumptions. We proposed the platform to measure 15N, 17O and 18O-labelled N2O by GC/MS, which allowed us to measure the production and consumption of N2O simultaneously. In addition, the process model we develop can facilitate the interpretation of the MILNC data to discuss the relative strength of production and consumption processes.

Academic Significance and Societal Importance of the Research Achievements

温室効果ガスの削減は喫緊の課題である。今回対象としているN2Oガスは温室効果が強いだけでなくオゾン層を破壊するガスでもあるため、その削減が求められているが、その生成消費過程が大変複雑なため、未だにN2Oの挙動については良くわかっていない。今回開発したMILNC測定法によりこのN2O挙動がより詳細に理解できるようになると期待される。たとえば今後、このMILCN測定法を様々な土壌や堆積物に利用することで、人間活動により変化する窒素供給に対してN2Oがどのように反応して放出されてしまうかを明らかにすることが期待される。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (4 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] An internal recycling mechanism between ammonia/ammonium and nitrate driven by ammonia-oxidizing archaea and bacteria (AOA, AOB, and Comammox) and DNRA on Angkor sandstone monuments2021

    • Author(s)
      Ding Xinghua、Lan Wensheng、Li Yiliang、Yan Aixin、Katayama Yoko、Koba Keisuke、Makabe Akiko、Fukushima Keitaro、Yano Midori、Onishi Yuji、Ge Qinya、Gu Ji-Dong
    • Journal Title

      International Biodeterioration & Biodegradation

      Volume: 165 Pages: 105328-105328

    • DOI

      10.1016/j.ibiod.2021.105328

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Influence of δ18O of water on measurements of δ18O of nitrite and nitrate2020

    • Author(s)
      Kobayashi Kanae、Fukushima Keitaro、Onishi Yuji、Nishina Kazuya、Makabe Akiko、Yano Midori、Wankel Scott D.、Koba Keisuke、Okabe Satoshi
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 35 Issue: 2 Pages: 1-13

    • DOI

      10.1002/rcm.8979

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Control of the Nitrogen Isotope Composition of the Fungal Biomass: Evidence of Microbial Nitrogen Use Efficiency2019

    • Author(s)
      Shinoda Kazuki、Yano Midori、Yoh Muneoki、Yoshida Makoto、Makabe Akiko、Yamagata Yohei、Houlton Benjamin Z.、Koba Keisuke
    • Journal Title

      Microbes and Environments

      Volume: 34 Issue: 1 Pages: 5-12

    • DOI

      10.1264/jsme2.ME18082

    • NAID

      130007627736

    • ISSN
      1342-6311, 1347-4405
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 窒素循環解析に向けた重窒素・酸素標識一酸化二窒素定量手法の開発2020

    • Author(s)
      黒岩恵・勝山千恵・木庭啓介
    • Organizer
      第54回日本水環境学会年会
    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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