Time series changes in radiocaesium distribution in tea plants (Camellia sinensis (L.)) after the Fukushima Dai-ichi Nuclear Power Plant accident
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- 作者：Yuhei Hirono ; hirono@affrc.go.jp" class="auth_mail" title="E-mail the corresponding author ; Kunihiko Nonaka
- 关键词：Effective half-life ; Fukushima Dai-ichi Nuclear Power Plant ; Pruning ; Radiocaesium ; Tea plants (Camellia sinensis (L.)) ; Translocation
- 刊名：Journal of Environmental Radioactivity
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：152
- 期：Complete
- 页码：119-126
- 全文大小：750 K
文摘
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Effective half-life of 137Cs for first 2 y in new shoots of tea plants is 0.36 y.
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Effective half-life of 134Cs for first 2 y in new shoots of tea plants is 0.30 y.
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81% of radiocaesium existed in foliar layer and branches in 3 months after fallout.
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High radiocaesium activity moved from upper to lower parts of tea plants after 1 y.
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Pruning reduced 137Cs activity by 56% in new shoots growing the next year.