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2010 Fiscal Year Final Research Report

Clarification of a role of unfrozen water on water movement of freezing and thawing of soils in agricultural area of cold region under climate change.

Research Project

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Project/Area Number 20780178
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionTokyo University of Agriculture

Principal Investigator

SUZUKI Shinji  Tokyo University of Agriculture, 地域環境科学部, 講師 (00459710)

Project Period (FY) 2008 – 2010
Keywords気候変動 / 寒冷地 / 凍土 / 不凍水 / 水移動
Research Abstract

Contribution of both the matric potential and osmotic potential on depression of the water potential of frozen volcanic ash soils associated with soil freezing was assessed in Abashiri region of Hokkaido Prefecture, Japan. The effect of the osmotic potential was negligibly small when EC_<1:5> was less than 0.17dSm^<-1>. Using those results, in-situ monitoring of matric potential was conducted, and changes in the matric potential of frozen soil layer were compared with that of unfrozen subsoil. It is revealed that the matric potential of unfrozen subsoil associated with changes in the matric potential of the frozen soil layer. The matric potential of frozen soil layer was considerably smaller than that of unfrozen subsoil.

  • Research Products

    (6 results)

All 2011 2010

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Experimental study on sample size for laboratory calibration tests of commercial dielectric soil water sensors.2011

    • Author(s)
      Suzuki, S., Hirota, T., Iwata, Y.
    • Journal Title

      Japan Agricultural Research Quarterly 印刷中

    • Peer Reviewed
  • [Journal Article] 熱電対用小型データロガーを用いた地中熱流量および純放射量の測定とエチオピア国中央部での利用2011

    • Author(s)
      鈴木伸治・田島淳・真田篤史・渡邉文雄・高橋悟・関山哲雄
    • Journal Title

      沙漠研究 20(4)

      Pages: 201-206

    • Peer Reviewed
  • [Journal Article] Effects of snow cover on soil freezing, water movement, and snowmelt infiltration : A paired plot experiment.2010

    • Author(s)
      Iwata, Y., Hayashi, M., Suzuki, S., Hirota, T., Hasegawa, S.
    • Journal Title

      Water Resources Research 46,WO9504

      Pages: DOI:10.1029/2009WROO8070

    • Peer Reviewed
  • [Journal Article] Effects of frozen soil and snow cover on cold-season soil water dynamics in Tokachi, Japan.2010

    • Author(s)
      Iwata, Y., Hirota, T., Hayashi, M., Suzuki, S., Hasegawa, S.
    • Journal Title

      Hydrological Processes(DOI : 10.1002/hyp.7621.) 24

      Pages: 1755-1765

    • Peer Reviewed
  • [Presentation] 寒冷地農地における凍土層および下層土のマトリックポテンシャルの定量化2010

    • Author(s)
      葛城拓也・鈴木伸治・伊藤博武・高橋悟
    • Organizer
      2010年度土壌物理学会大会
    • Place of Presentation
      鳥取大学
    • Year and Date
      2010-10-23
  • [Book] エチオピア中央部の気象および土壌の特性と問題点(中村好男・豊田裕道編)(食と農と資源)2010

    • Author(s)
      鈴木伸治
    • Total Pages
      118-129
    • Publisher
      共立出版

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Published: 2012-02-13   Modified: 2016-04-21  

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