福島第一原子力発電所事故後の森林における放射性セシウム動態と渓流生態系への影響

  • 金指 努
    福島大学環境放射能研究所
  • 境 優
    国立環境研究所福島地域協働研究拠点環境影響評価研究室
  • 今村 直広
    森林総合研究所立地環境研究領域土壌特性研究室
  • 大橋 伸太
    森林総合研究所木材加工・特性研究領域組織材質研究室

書誌事項

タイトル別名
  • Radiocesium dynamics in forests and impacts on headwater stream ecosystems
  • フクシマ ダイイチ ゲンシリョク ハツデンショ ジコ ゴ ノ シンリン ニ オケル ホウシャセイ セシウム ドウタイ ト ケイリュウ セイタイケイ エ ノ エイキョウ

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抄録

<p>Radiocesium, which was deposited in forests due to the Fukushima Dai-ichi nuclear power plant accident, is estimated to remain in the forest for a long period. Forest covers a large proportion of the land area contaminated by radiocesium but there are no decontamination plans for most of the forest area. Therefore, radiocesium is expected to be transferred throughout the material cycle systems in forests and to be taken up by trees. During the approximately 10 years since the accident, many studies on the dynamics of radiocesium in forests have been conducted in the contaminated area. In addition, radiocesium contamination in forests affects headwater stream ecosystems because organic matters such as dead leaves falling from forests are essential nutrient sources for food webs in the ecosystems. There have been several previous studies aimed at understanding the dynamics of radiocesium contamination in the ecosystems through organic matter derived from the contaminated forests. This review introduces previous studies into how radiocesium deposited in forests was transferred through forests and was absorbed by trees. In addition, the process by which radiocesium deposited in forests transfers into headwater streams, and the process of migration into benthic macroinvertebrates, are introduced.</p>

収録刊行物

  • 地球化学

    地球化学 55 (4), 144-158, 2021-12-25

    一般社団法人日本地球化学会

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