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.

• Project/Area Number: 20780178
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Irrigation, drainage and rural engineering/Rural planning
• Research Institution: Tokyo 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
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• 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

• [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
  • NAID: 130002147971
  • 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
  • NAID: 10028178102
  • 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 Volume: 20(4) Pages: 201-206
  • NAID: 10028178102
  • 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
  • NAID: 120003483494
  • 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
• [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.(印刷中)
  • Peer Reviewed
• [Journal Article] Meteorological and Soil Characteristics in the Central Ethiopia (2009)
  • Author(s): Suzuki, S., Deressa, M., Watanabe, F., Shiratori, K., Matsumoto, I., Jabessa, B. S., and Takahachi, S.
  • Journal Title: 沙漠研究 19(S)(印刷中)
  • NAID: 10025568908
  • 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
• [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,鳥取市
• [Presentation] 降雨および乾燥に対する中部エチオピア畑圃場における土壌水分の応答 (2009)
  • Author(s): 鈴木伸治・真田篤史・中村謙仁・久保歩・高橋悟
  • Organizer: 2009年度土壌物理学会大会
  • Place of Presentation: 明治大学生田中央校舎メディアホール,川崎市
  • Year and Date: 2009-10-24
• [Presentation] Improvement of agricultural productivity in the Central Ethiopia based on effective use of rain water (2008)
  • Author(s): Suzuki, S., Takahashi, S., Toyoda, H., Watanabe, F., Sanada, A., and Nakamura, K.
  • Organizer: Kantaoui Forum 9-TJASSST'2008
  • Place of Presentation: チュニジア共和国ロゥーズ
  • Year and Date: 2008-11-10
• [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
  • Publisher: 共立出版
• [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,第II部,第5章,p.118-129. (2010)
  • Author(s): 鈴木伸治
  • Total Pages: 228
  • Publisher: 共立出版