Radioactive cesium distribution in bamboo [Phyllostachys reticulata (Rupr) K. Koch] shoots after the TEPCO Fukushima Daiichi Nuclear Power Plant disaster(Fukushima special section)

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著者

    • NAKANISHI Hiromi
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • TANAKA Houdo
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • TAKEDA Kouki
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • TANOI Keitaro
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • HIROSE Atsushi
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • YAMAKAWA Takashi
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • MORI Satoshi
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo

抄録

Radioactivity levels of cesium (Cs)-134 and ^<137>Cs in bamboo [Phyllostachys reticulata (Rupr) K. Koch] sprouts grown from April to June 2011 over a wide area (including Fukushima Prefecture) were elevated (max. 3100 Bq kg^<-1> fresh weight) after the Tokyo Electric Power Company, Inc. (TEPCO) Fukushima Daiichi Nuclear Power Plant disaster in March 2011. Bamboo sprouts in 2012 also contained high radio- activity levels. Radioactivity imaging analysis of bamboo sprouts harvested in 2012 showed increasing concentration gradients of radioactivity from the lower parts to the top of the sprouts. The peels were individually separated from the sprouts, and the inner edible part (trunk) was cross-sectioned at the internodal sections from the top to the lower parts. Each segmented trunk and its corresponding peel were analyzed for radioactive cesium (^<134>Cs and ^<137>Cs) and stable cesium (^<133>Cs). The concentrations of ^<134>Cs and ^<137>Cs showed significant increases from the lower part to the top, whereas ^<133>Cs showed an almost constant value in the trunk and peel except in the peel of the top node. We speculated that Cs and Cs in newly emerging bamboo sprouts in 2012 were translocated mainly from various plant tissues (where the fallout was layered on the bamboo tissues) in older bamboo, while ^<133>Cs was translocated from the soil through the roots of the new bamboo sprouts and was present in the roots and stems.

収録刊行物

  • Soil science and plant nutrition

    Soil science and plant nutrition 60(6), 801-808, 2014-12

    一般社団法人日本土壌肥料学会

各種コード

  • NII論文ID(NAID)
    110009910389
  • NII書誌ID(NCID)
    AA00844314
  • 本文言語コード
    ENG
  • ISSN
    00380768
  • データ提供元
    NII-ELS 
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