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Radiocesium concentrations in invertebrates and their environmental media at two distances from the Fukushima Dai-ichi Nuclear Power Plant during 3 to 6 years after the 2011 accident
Environmental Pollution ( IF 8.9 ) Pub Date : 2020-09-16 , DOI: 10.1016/j.envpol.2020.115657
Mitsuhiro Iwasa , Fumiya Nakaya , Hideyuki Kabeya , Kosuke Sato , Shin-ichiro Ishikawa , Teppei Takahashi

Activity concentrations of the radioactive cesium (134Cs and 137Cs) were investigated in invertebrates at two sites of moderately high and higher air radiation dose rates, 14 km and 11 km distances, respectively, from the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) from 2013 to 2016. At a14-km point, the 134+137Cs concentrations of soils in coniferous and broadleaf forests increased from 2013 to 2014, and thereafter declined until 2016. The 134+137Cs concentrations of the phytophagous beetle Anomala cuprea (Hope) rapidly decreased by 76.1% from 2013 to 2014, reflecting reduction in those of broadleaves. The 134+137Cs concentration levels of the carnivorous beetle Dolichus halensis (Schaller) showed a relatively low levels. The 137Cs concentrations of the necrophagous beetle Eusilpha japonica (Motshulsky) and coprophagous beetle Onthophagus lenzii (Harold) remained constant without reduction from 2013 to 2016. Average 134+137Cs concentrations throughout four years were the highest in the geophagous crustacean (Armadillidium vulgare Latreille), followed by necrophagous beetle and coprophagus beetle. The 134+137Cs concentrations in earthworms with gut contents were significantly correlated with those in soils at each habitat from 2014 to 2015 at a14-km point, and the concentration levels at an 11-km point in 2015 were remarkably high (898 kBq kg-1). Transfer factors (TFs) in earthworms ranged from 1.02 to 2.66 at a 14-km point and 0.66 to 5.0 at an11-km point. The transfer and chronological changes of radiocesium in invertebrates were discussed in relation to food habits through trophic levels in woodlands and pasturelands.



中文翻译:

2011年事故发生后3至6年内,距福岛第一核电站有两个距离的无脊椎动物及其环境介质中的放射性铯浓度

在距福岛第一核电站(FDNPP)14 km和11 km的中等中等和较高的空气辐射剂量率的两个地点的无脊椎动物中,研究了放射性铯的活性浓度(134 Cs和137 Cs) )从2013年至2016年。在14公里处,针叶林和阔叶林土壤的134 + 137 Cs浓度从2013年至2014年增加,此后一直下降到2016年。植食性甲虫Anomala cuprea134 + 137 Cs的浓度)从2013年到2014年,希望(Hope)迅速下降了76.1%,反映了阔叶树的减少。食肉甲虫的134 + 137 Cs浓度水平哈里斯犬(Schaller)显示出相对较低的水平。在137个的嗜尸甲虫的铯浓度Eusilpha粳稻(Motshulsky)和coprophagous甲虫嗡lenzii(哈罗德)仍然没有从2013年开始不断减少至2016年的平均134个+ 137个铯整个4年浓度在geophagous甲壳类(最高鼠妇蚁),其次是食虫甲虫和共食性甲虫。该134 + 1372014年至2015年,在14 km点处,具有肠道含量的earth的Cs浓度与每个栖息地土壤中的Cs浓度显着相关,2015年在11 km点处的Cs浓度显着较高(898 kBq kg -1)。worm的传递因子(TFs)在14公里点的范围为1.02至2.66,在11公里点的范围为0.66至5.0。通过林地和牧场的营养水平,讨论了无脊椎动物中放射性铯的转移和时间变化与饮食习惯的关系。

更新日期:2020-09-16
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