| Project/Area Number |
26511003
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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 | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
菅野 均志 東北大学, 農学研究科, 助教 (30250731)
高橋 正 秋田県立大学, 生物資源科学部, 教授 (80132009)
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| Co-Investigator(Renkei-kenkyūsha) |
ASAKAWA SUSUMU 名古屋大学, 大学院生命農学研究科, 教授 (50335014)
TSUKADA HIROFUMI 福島大学, 教授 (50715498)
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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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 福島第一原発事故 / 放射性セシウム / 森林 / 草地 / 有機物 / リター / ルートマット / 土壌 / 牧草 / 汚染リスク / 溶出 |
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| Outline of Final Research Achievements |
We investigated the behavior of radio cesium (rCs) derived from Fukushima Daiichi Nuclear Power Station Accident in Japanese ceder forests and grasslands with emphasis on rCs in organic matter. In the forests, a large part of rCs trapped in top part of Japanese ceder trees in 2011 was washed down to forest floor after 3 years, and it further moved down from litter layer to surface mineral soil layer and was retained therein. Solubility of rCs in organic matter such as litter differed depending on origin of rCs. The solubility was low in litter contaminated through direct fallout of rCs in 2011, while in plant tissues contaminated through root absorption the solubility was high. In grasslands which were renovated after the accident, contamination risk of forage grass with rCs was rather higher when the original surface layer was not well incorporated into sublayer.
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