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Measurement of denitrification rate by 15N2 dilution method

Research Project

Project/Area Number 26740004
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental dynamic analysis
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Riya Shohei  東京農工大学, 工学(系)研究科(研究院), 助教 (80725606)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords脱窒速度 / 土壌 / 希釈法 / トレーサー法 / 脱窒 / 15N2ガス希釈法 / 湿地 / 15N2 / 15Nトレーサー法
Outline of Final Research Achievements

We proposed 15N dilution method to measure denitrification rate without soil disturbance, and evaluated its applicability to measure soil denitrification. Denitrification rate was compared with tracer method (conventional method) and dilution method. Denitrification rates measured with dilution method were 4.5 and 1.3 times higher than those with tracer method, respectively. These suggest that the dilution method could be applicable for small batch test investigating denitrification rate in the soil received high amount of nitrogen, such as agricultural soil.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (4 results)

All 2017 2016 2014

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

  • [Journal Article] The relationship between anammox and denitrification in the sediment of an inland river2014

    • Author(s)
      S. Zhou, S. Borjigin, S. Riya, A. Terada, M. Hosomi
    • Journal Title

      Science of the Total Environment

      Volume: 490 Pages: 1029-1036

    • DOI

      10.1016/j.scitotenv.2014.05.096

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] 15N2ガス希釈法による脱窒速度の測定2017

    • Author(s)
      利谷翔平, 那須啓亮, 寺田昭彦, 細見正明
    • Organizer
      第51回日本水環境学会年会
    • Place of Presentation
      熊本大学
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] 15N2ガス希釈法による脱窒測定2016

    • Author(s)
      利谷翔平, 那須啓亮, 高橋恵理加, 寺田昭彦, 細見正明
    • Organizer
      日本土壌肥料学会2016年度佐賀大会
    • Place of Presentation
      佐賀大学
    • Year and Date
      2016-09-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] Measurement of denitrification rate by 15N2 dilution method2016

    • Author(s)
      S. Riya, H. Nasu, A. Terada, M. Hosomi
    • Organizer
      Eco Summit 2016
    • Place of Presentation
      Montpellier, France
    • Year and Date
      2016-08-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2018-03-22  

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