Why is the concentration of radiocesium in rice near water inlet high?

• Project/Area Number: 26511007
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 復興農学
• Research Institution: Niigata University
• Principal Investigator: Yoshikawa Natsuki 新潟大学, 自然科学系, 准教授 (90447615)
• Co-Investigator(Kenkyū-buntansha): 原田 直樹 新潟大学, 自然科学系, 准教授 (50452066)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 放射性セシウム / 水田 / 農業用水 / 移行係数 / 溶存態セシウム / 懸濁態セシウム

Outline of Final Research Achievements

This study aimed at investigating the phenomenon of higher transfer factor of radiocesium from soil to rice plants near water inlets by quantifying spatial distribution of radiocesium in paddy field water, soil and rice plants at 13 experimental paddy fields in Hama-Dori district in Fukushima prefecture, and developing a numerical simulation model. In consequence, it was suggested that the cause of specifically high concentration of radiocesium in rice near the water inlet may be due to the suspended form of radiocesium accumulated near the water inlet but to the dissolved form. Based　on this result，densely transplanting near the water inlet to control the diffusion of suspended solid was attempted as a countermeasure for producing low contamination rice. However,this proposal was found to be failure.

Research Products

• [Journal Article] Measurement and estimation of radiocesium discharge rate from paddy field during land preparation and mid-summer drainage (2016)
  • Author(s): S.Miyazu, T.Yasutaka, N.Yoshikawa, S.Tamaki, K.Nakajima, I.Sato, M.Nonaka, N.Harada
  • Journal Title: Journal of Environmental Radioactivity Volume: 155-156 Pages: 23-30
  • DOI: 10.1016/j.jenvrad.2016.01.013
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 137Cs in irrigation water and its effect on paddy fields in Japan after the Fukushima nuclear accident (2014)
  • Author(s): Natsuki Yoshikawa・Hitomi Obara・Marie Ogasa・Susumu Miyazu・Naoki Harada・Masanori Nonaka
  • Journal Title: Science of The Total Environment Volume: 481 Pages: 252259-252259
  • DOI: 10.1016/j.scitotenv.2014.01.129
  • Peer Reviewed
• [Presentation] 水田の水口付近における土壌及びイネの放射性セシウム濃度の分布 (2016)
  • Author(s): 鈴木啓真・中島浩世・鶴田綾介・吉川夏樹・石井秀樹・野川憲夫・原田直樹・野中昌法
  • Organizer: 2016年度日本土壌肥料学会佐賀大会
  • Place of Presentation: 佐賀大学本庄キャンパス
  • Year and Date: 2016-09-20
• [Presentation] 灌漑水取水に伴う放射性物質の水田内動態 (2016)
  • Author(s): 鶴田綾介・吉川夏樹・中島浩世・原田直樹・鈴木啓真・野川憲夫・野中昌法
  • Organizer: 平成28年度農村工学会大会講演会
  • Place of Presentation: ハーネル仙台
  • Year and Date: 2016-08-30
• [Presentation] 水田を介した放射性セシウムの動態と水田の役割 (2016)
  • Author(s): 中島浩世・吉川夏樹・坂場将人・鶴田綾介・宮津進・保高徹生・鈴木啓真・原田直樹・野中昌法・野川憲夫・伊藤久生
  • Organizer: 平成28年度農村工学会大会講演会
  • Place of Presentation: ハーネル仙台
  • Year and Date: 2016-08-30
• [Presentation] 農業用水がイネの放射性セシウム濃度に与える影響－流下試験による検討－ (2015)
  • Author(s): 鈴木啓真・荘司亮介・弦巻貴大・吉澤涼太・田巻翔平・吉川夏樹・石井秀樹・野川憲夫・原田直樹・野中昌法，農業用水がイネの放射性セシウム濃度に与える影響－流下試験による検討－
  • Organizer: 2015年度日本土壌肥料学会京都大会
  • Place of Presentation: 京都大学
  • Year and Date: 2015-09-09
• [Presentation] 灌漑用水中の放射性セシウムがイネに与える影響 (2015)
  • Author(s): 中島浩世・田巻翔平・吉川夏樹・原田直樹・野中昌法
  • Organizer: 平成27年度農業農村工学会大会講演会
  • Place of Presentation: 岡山大学
  • Year and Date: 2015-09-01
• [Presentation] 水田を介した放射性セシウムの動態 (2015)
  • Author(s): 鶴田綾介・吉川夏樹・佐藤郁・田巻翔平・中島浩世・原田直樹・野中昌法・宮津進・保高徹夫
  • Organizer: 平成27年度農業農村工学会大会講演会
  • Place of Presentation: 岡山大学
  • Year and Date: 2015-09-01
• [Presentation] The effect of irrigation on 137Cs uptake in rice (2015)
  • Author(s): Yoshimasa Suzuki・Ryosuke Shoji・Takahiro Tsurumaki・Ryota Yoshizawa・ Shohei Tamaki・ Natsuki Yoshikawa・Hideki Ishii・Norio Nogawa・Naoki Harada・Masanori Nonaka
  • Organizer: 13th International Conference on the biogeochemistry of trace elements
  • Place of Presentation: Fukuoka International Congress Center
  • Year and Date: 2015-07-12 – 2015-07-16
• [Presentation] 太田川流域水田における放射性セシウムの挙動と水稲への吸収 (2014)
  • Author(s): 荘司亮介・片桐優亮・ 小笠真理恵・田巻翔平・奥村健郎・吉川夏樹・原田直樹・野中昌法
  • Organizer: 日本土壌肥料学会関東支部
  • Place of Presentation: 山梨大学甲府キャンパス
  • Year and Date: 2014-12-06
• [Presentation] 農業用水由来の放射性セシウムのイネへの影響 (2014)
  • Author(s): 田巻翔平・吉川夏樹・小笠真理恵・原田直樹・野中昌法
  • Organizer: 農業農村工学会
  • Place of Presentation: 新潟市 新潟コンベンションセンター
  • Year and Date: 2014-08-26 – 2014-08-29
• [Book] BISHAMONの軌跡ーII ～福島支援5年間の記録～ (2016)
  • Author(s): 内藤眞・青木萩子・野中昌法編 （原田直樹・吉川夏樹 章分担）
  • Total Pages: 399
  • Publisher: 新潟日報事業者