Temporal changes in the transfer of accidentally released 137Cs from tree crowns to the forest floor after the Fukushima Daiichi Nuclear Power Plant accident | Zendy

Hiroaki Kato | Zendy; Yuichi Onda | Zendy

Open Access

Temporal changes in the transfer of accidentally released 137Cs from tree crowns to the forest floor after the Fukushima Daiichi Nuclear Power Plant accident

Author(s) -

Hiroaki Kato,

Yuichi Onda

Publication year - 2014

Publication title -

progress in nuclear science and technology

Language(s) - English

Resource type - Journals

ISSN - 2185-4823

DOI - 10.15669/pnst.4.18

Subject(s) - nuclear power plant , environmental science , nuclear power , fukushima nuclear accident , accident (philosophy) , tree (set theory) , nuclear engineering , engineering , ecology , nuclear physics , biology , physics , mathematical analysis , philosophy , mathematics , epistemology

Forests in Fukushima and neighboring prefectures accumulated atmospheric fallout of radioactive materials after the Fukushima Daiichi Nuclear Power Plant accident. We investigated the initial behavior of Cs deposited in coniferous forest plantations. Furthermore, we conducted in-situ measurements of radioactivity in coniferous and broadleaf forest canopies. The results of this study demonstrated that more than 60% of the Fukushima reactor accident–derived radiocesium remained in coniferous forest canopies 5 months after initial deposition. Furthermore, in-situ measurements of radiocesium indicated that the radiocesium absorbed in forest canopies has been moving downward through the canopy to the forest floor.

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