Establishment of a watershed scale model predicting radiocesium redistribution.
| Project/Area Number |
26511001
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
復興農学
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
江口 定夫 国立研究開発法人農業環境技術研究所, 物質循環研究領域, 主任研究員 (30354020)
山口 紀子 国立研究開発法人農業環境技術研究所, 土壌環境研究領域, 主任研究員 (80345090)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 放射性セシウム / SWATモデル / 放射性セシウム捕捉ポテンシャル / 移行係数 / 流域 / 除染 / 流量 / 水田 / SWAT / 固液分配係数 / 放射性セシウム補足ポテンシャル |
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| Outline of Final Research Achievements |
To predict the redistribution of radio-cesium (Cs) deposited in a watershed with an accident at the Fukushima Daiichi Nuclear Power Plant on 11 March 2011, Soil Water Assessment Tool (SWAT) model developed by USDA was modified (SWAT-Cs). The SWAT-Cs was equipped the Cs module describing Cs transfer from soil to plant as a function of K concentration and radio-cesium interception potential (RIP).
The Cs module predicted well the measured Cs transfer coefficient of paddy brown rice.Performance of SWAT-Cs for daily streamflow was satisfactory.
However, due to removing surface soils during the decontamination in 2015, the parameters of SWAT-Cs should be changed after decontamination. On the other hand, SWAT-Cs performance for the stream loads of SS, K and Cs was not satisfactory. SWAT-Cs could not predict large episodic peaks of SS, K and Cs loads without increase of streamflow. This may be due to channel degradation associated with the abandonment of land managements after the accidents.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Assessing potassium environmental losses from a dairy farming watershed with the modified SWAT model.2016
Author(s)
Wang, CY, Jiang, R, Boithias, L. Sauvage, S, Sanchez-Perez, JM, Mao, XM, Han, YP, Hayakawa, A, Kuramochi, K, Hatano, R
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Journal Title
Agricultural Water Management
Volume: 175
Pages: 91-104
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] 福島県内の不作付け農地及び農業流域からの放射性セシウムの流出実態2015
Author(s)
江口定夫, 吉川省子, 板橋直, 井倉将人, 神山和則, 平舘俊太郎, 楠本良延, 德岡良則, 木方展治, 藤原英司, 山口紀子, 大越聡, 倉持寛大, 波多野隆介
Organizer
日本土壌肥料学会2015年度京都大会
Place of Presentation
京都大学（京都府京都市）
Year and Date
2015-09-09
Related Report
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[Presentation] Radiocesium behavior in Japanese soils2015
Author(s)
N. Yamaguchi, H. Tsukada, K. Kohyama, Y. Takata, I. Taniyama
Organizer
13th International Conference on the Biogeochemistry of Trace Elements, ICOBTE
Place of Presentation
福岡国際会議場（福岡県福岡市）
Year and Date
2015-07-12
Related Report
Int'l Joint Research / Invited
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