Incorporation of radiocesium by plants via root uptake appears to be affected by some of the exchangeable cations in the soil and/or pH of the soil. However, few studies have examined the relationship between ¹³⁷Cs in trees and soil properties in the area surrounding the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) after the accident in March 2011. To elucidate the relationships between the root uptake of ¹³⁷Cs by deciduous broadleaved trees and soil properties, we measured the activity concentration of ¹³⁷Cs in the growing shoots of coppiced konara oak (Quercus serrata) grown after the FDNPP accident and the amounts of total ¹³⁷Cs; exchangeable (ex-) ¹³⁷Cs, ex-K, ex-Mg, and ex-Ca; and pH (H₂O) in soils collected from 34 forest stands in Fukushima between December 2016 and May 2017. Ex-¹³⁷Cs showed a positive linear relationship with the activity concentration of ¹³⁷Cs in the growing konara oak shoots, whereas ln-transformed ex-K, ex-Mg, ex-Ca, and pH (H₂O) showed negative linear relationships with ln-transformed ¹³⁷Cs activity concentrations in the growing shoots. However, only ex-¹³⁷Cs and ex-K were identified as significant factors determining the activity concentration of ¹³⁷Cs in konara oak according to multiple regression methods and a model selection using Akaike information criterion; ex-K had a stronger influence on the activity concentration of ¹³⁷Cs in konara oak than ex-¹³⁷Cs. In the present study, we demonstrated that soil ex-K negatively and non-linearly alters ¹³⁷Cs activity concentration in deciduous broadleaved trees. We also noted that the relationship between ¹³⁷Cs in deciduous broadleaved trees and soil ex-K in forests without K fertilization was similar to the relationships between ¹³⁷Cs in other plants and ex-K in K-fertilized lands reported in previous studies of the FDNPP accident.

植物通过根吸收而掺入放射性铯似乎受到土壤中某些可交换阳离子和/或土壤pH值的影响。然而，很少有研究探讨的关系^137个在2011年3月事故发生后，福岛第一核电站（FDNPP）的周围地区的树木和土壤性质CS到阐明的根吸收之间的关系^137个的铯落叶阔叶树和土壤性质，我们测量的活性浓度^137个铯在coppiced konara橡木（日益增长的枝条橡的FDNPP事故之后生长）和总的量^137和铯; 可交换的（ex-）¹³⁷Cs，ex-K，ex-Mg和ex-Ca; 和pH值（H ₂ O）在从34森林收集矗立在福岛2016年12月和2017年5之间EX-土壤^137个Cs的显示出与活性浓度的正线性关系^137个Cs的在生长konara橡木枝条，而LN-转化ex-K，ex-Mg，ex-Ca和pH（H ₂ O）与生长中的芽中ln转化的¹³⁷ Cs活性浓度呈负线性关系。但是，只有前¹³⁷ Cs和前K被确定为确定¹³⁷的活性浓度的重要因素。根据多重回归方法和使用Akaike信息准则的模型选择，在科纳拉橡树中的Cs；前-K对的活性浓度更强的影响力^137个铯在konara橡木比EX- ^137个Cs中。在本研究中，我们证明了土壤ex-K负向和非线性地改变了落叶阔叶树中的¹³⁷ Cs活性浓度。我们还注意到，关系^137个CS里落叶阔叶乔木和土壤EX-K在森林不施钾是相似的之间的关系，^137个在其他植物和前-K的K-受精土地铯在FDNPP以前的研究报告事故。