Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 69(3): 93-102 (2020)


福島県においてフォールアウト後に樹園地に植栽した数種の果樹の移行係数とカキ果実の137Cs濃度に及ぼす表土処理方法の影響Transfer Factor of 137Cs in Several Fruit Tree Species Planted After Radioactive Fallout in Orchard in Fukushima Prefecture and the Effect of Topsoil Management on 137Cs Concentration in Persimmon Fruits

1国立研究開発法人農業・食品産業技術総合研究機構果樹茶業研究部門Institute of Fruit Tree and Tea Science, National Agriculture and Food Research Organization

2福島県農業総合センター果樹研究所Institute of Fruit Tree Research Center, Fukushima Agricultural Technology Centre

3福島県農業総合センターFukushima Agricultural Technology Centre

4国立研究開発法人農業・食品産業技術総合研究機構西日本農業研究センターWestern Region Agricultural Research Center, National Agriculture and Food Research Organization


現所属:福島県環境保全農業課Present address: Fukushima Prefectural Government

受付日:2019年7月5日Received: July 5, 2019
受理日:2019年10月25日Accepted: October 25, 2019
発行日:2020年3月15日Published: March 15, 2020


We conducted a 3- to 5-year study of the transfer factors (TF) of 137Cs in Japanese chestnut, satsuma mandarin and Japanese persimmon trees planted 1 to 2 years after the Fukushima Dai-ichi Nuclear Power Plant accident. The TFs of these fruit trees were on the order of 10−4 and 10−3 across the several years and showed annual variations. Comparison of the TFs between two Japanese persimmon cultivars, ‘Hachiya’ and ‘Hiratanenashi,’ seemed to be higher TFs values of the fruit and leaves in the former than in the latter cultivar. We further investigated the effect of topsoil management (plowing, topsoil removal, and topsoil return) on 137Cs concentration in ‘Hachiya’ fruit and the planted soil. The soil 137Cs concentration in the topsoil removal treatment was lower than that in the plowing and topsoil return treatments, but the topsoil management had no effect on the 137Cs concentration of ‘Hachiya’ fruit in this experiment.

Key words: Fukushima Dai-ichi Nuclear Power Plant Accident; transfer factor of caesium-137; topsoil management; fruit tree

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