Factors affecting <sup>137</sup>Cs concentration in wild plants and soils of different land use in Iitate village after the Fukushima nuclear power plant accident

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<p> Information about radioactive cesium (137Cs) distribution on lands with different uses is necessary for future decontamination works. This study investigated the degree of contamination and factors affecting 137Cs accumulation in soils and wild plants in areas of different land use after the Fukushima Nuclear Power accident. We measured the level of 137Cs in soils and wild plants in Iitate village and neighboring areas in 2014. Results indicated that 137Cs in the agricultural soils was 11-14 kBq kg－1, while the roadside soil with a high clay content showed the highest concentration (261 kBq kg－1) and the mountain soil with high soil organic matter showed the lowest concentration (6 kBq kg－1). The 137Cs concentrations in wild plants directly reflected those in their respective soils. The 137Cs uptake in wild plants did not differ among plant species grown in the same soil but differed within the same plant species grown in different soils.</p>

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