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How does increasing nitrogen deposition affect vegetation and grazing capacity of Mongolian grassland?

Research Project

Project/Area Number 18770016
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Ecology/Environment
Research InstitutionTottori University

Principal Investigator

KINUGASA Toshihiko  Tottori University, 農学部, 助教 (80403377)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,960,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2007: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywords窒素降下物 / 乾燥草原 / 一次生産力 / 植生 / 遊牧 / モンゴル / 嗜好性 / 牧養力
Research Abstract

モンゴル草原において窒素散布実験を行い、窒素降下量の増加が草原の生産量にどう影響するのかを解析した。その結果、窒素降下量増加による地上部生産量の増加は降水量の年変動に左右され、それは生産量に対する降雨と窒素の交互作用効果が草原構成種によって異なるためだと考えられた。窒素降下量増加による草原生産力の増加は少雨年に見られ、特に嗜好性の低い種が大きく増加していた。しかし調査地において2050年までに予想される窒素降下量の増加では、このような応答はほとんど検知できないと考えられた。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (6 results)

All 2008 2007 Other

All Journal Article (2 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Increasing nitrogen deposition and grassland productivity in Mongolia2008

    • Author(s)
      Kinugasa T, Shinoda M, and Tsunekawa A
    • Journal Title

      Multifunctional Grasslands in a Changing World 1

      Pages: 614-614

    • Related Report
      2008 Final Research Report
  • [Journal Article] Increasing nitrogen deposition and grassland productivity in Mongolia2008

    • Author(s)
      Kinugasa T, Shinoda M, and Tsunekawa A.
    • Journal Title

      Multifunctional Grasslands in a Changing World 1

      Pages: 614-614

    • Related Report
      2008 Annual Research Report
  • [Presentation] Increasing nitrogen deposition and grassland productivity in Mongolia2008

    • Author(s)
      Kinugasa T, Shinoda M, Tsunekawa A
    • Organizer
      Joint Meeting of the 21st International Grassland Congress and the 8th International Range-land Congress
    • Place of Presentation
      Hohhot, China
    • Year and Date
      2008-07-04
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 窒素降下物量の増加と草原植生2008

    • Author(s)
      衣笠利彦
    • Organizer
      日本植物生理学会
    • Place of Presentation
      札幌
    • Year and Date
      2008-03-20
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] 窒素降下物量の増加はモンゴル高原の植生および遊牧にどう影響するか?2007

    • Author(s)
      衣笠利彦、篠田雅人、恒川篤史
    • Organizer
      日本生態学会
    • Place of Presentation
      松山
    • Year and Date
      2007-03-22
    • Related Report
      2008 Final Research Report
  • [Remarks] 「化学と工業(日本化学会)」に実験内容が掲載(p107)

    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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