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CO2 emission during non-growing season in a semiarid grassland

Research Project

Project/Area Number 15K07814
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Environmental agriculture(including landscape science)
Research InstitutionChuo University

Principal Investigator

Nakano Tomoko  中央大学, 経済学部, 教授 (70295468)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsCO2フラックス / 半乾燥地 / 草原生態系 / 温室効果気体 / 冬季 / 土壌呼吸 / 半乾燥草原 / モンゴル国 / 炭素循環 / 土壌凍結・融解
Outline of Final Research Achievements

I measured the carbon dioxide flux with automatic closed chamber system through two winters from 2016 to 2018 in a semiarid grassland in Mongolia. During the mid-winter, CO2 efflux rates were almost zero. In spring and autumn, CO2 flux showed diurnal variation with soil temperature changes. In addition, a soil-thaw CO2 pulse was observed in 2018 spring.

Academic Significance and Societal Importance of the Research Achievements

地球温暖化の進行が危惧されている現在、その原因となる大気中のCO2濃度の変化、およびその変動メカニズムを明らかにすることは世界的にも火急の課題となっている。地球上の陸域生態系は、光合成と呼吸をとおして大気中CO2濃度に影響を与える。半乾燥地の草原生態系の特に夏以外の季節についてはCO2交換の研究例が少なく、本研究で得た観測結果およびその変動要因に関する知見は、地球上の炭素循環・気候変動を考えるうえで有用であると考えられる。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016 2015

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

  • [Journal Article] Interannual variation in net ecosystem CO<SUB>2</SUB> exchange and its climatic controls in a semiarid grassland of Mongolia2018

    • Author(s)
      Nakano T. and Shinoda M.
    • Journal Title

      Journal of Agricultural Meteorology

      Volume: 74 Issue: 2 Pages: 92-96

    • DOI

      10.2480/agrmet.D-17-00035

    • NAID

      130006684512

    • ISSN
      0021-8588, 1881-0136
    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] モンゴル草原生態系に対する遊牧家畜の影響評価2018

    • Author(s)
      中野智子・飯島慈裕・伊藤健彦
    • Organizer
      日本地理学会2018年春季学術大会
    • Related Report
      2017 Research-status Report
  • [Presentation] インターバルカメラを用いた遊牧家畜による生態系への影響評価2017

    • Author(s)
      中野智子・飯島慈裕・伊藤健彦
    • Organizer
      日本農業気象学会2017年全国大会
    • Place of Presentation
      十和田市
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report
  • [Presentation] Carbon dioxide exchange in semiarid grasslands of Mongolia2017

    • Author(s)
      Nakano T., Iijima Y., Ito T. and Shinoda M.
    • Organizer
      The 4th Interdisciplinary Oxford Desert Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 半乾燥草原生態系におけるCO2交換の年々変動とその要因2016

    • Author(s)
      中野智子・篠田雅人
    • Organizer
      日本農業気象学会2016年全国大会
    • Place of Presentation
      岡山
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] モンゴル半乾燥草原に夏季のCO2収支の年々変動2015

    • Author(s)
      中野智子・篠田雅人
    • Organizer
      日本土壌肥料学会2015年度京都大会
    • Place of Presentation
      京都
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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