The 137Cs accumulation by forest-derived products in the Gomel region
The 137Cs accumulation by forest-derived products in the Gomel region
复制标题
DOI：
10.1016/j.jenvrad.2013.02.003
复制
发表时间：
2014-01-01
影响因子：
2.3
通讯作者：
Mashkov, I. A.
中科院分区：
文献类型：
--
作者：
Bulko, N. I.;Shabaleva, M. A.;Mashkov, I. A.
本文报告了戈梅利地区森林衍生产品对Cs-137吸收的基本特征。即使在土壤污染密度为37 kBq m（-2）的情况下，也发现20-30%的蘑菇和浆果中的放射性核素含量高于允许水平。土壤Cs-137污染浓度、立地类型和气象参数是影响蘑菇和浆果吸收放射性铯的主要因素。结果表明，森林产品中Cs-137含量随土壤污染程度的增加而增加。生长在不同立地类型的越橘（Vaccinium myrtillus）Cs-137含量差异显著。还确定了在不同自然地点生长的森林食品的Cs-137放射性的统计学显著差异受本研究中指定的“领土”因素的影响。造成这种差异的原因既有切尔诺贝利放射性沉降物的形式，也有决定土壤中放射性核素含量变化的自然和气候条件。在干旱年份，某些蘑菇中的Cs-137浓度高于正常年份。(C)2013爱思唯尔有限公司保留所有权利。
This paper reports basic features of the Cs-137 uptake by forest-derived products in the Gomel region. Even with the soil contamination density of 37 kBq m(-2) the radionuclide contents in 20-30% of mushrooms and berries were found to be higher than the admissible levels. The Cs-137 contamination density of soil, site type and meteorological parameters were observed as the major factors which govern the radiocaesium uptake by mushrooms and berries. The Cs-137 contents in forest-derived products were found to increase directly with the soil contamination density. Bilberries (Vaccinium myrtillus) growing on different site types differed significantly in the Cs-137 content. It was also determined that statistically significant differences in the Cs-137 radioactivity of forest foods growing on different natural sites were governed by the factor designated in the current study by "territorial". The differences are to be accounted for both by forms of the Chernobyl fallout and by the natural and climatic conditions determining variations in the availability of radionuclides in the soil. In dry years the Cs-137 concentrations in some mushroom species were higher than in normal years. (C) 2013 Elsevier Ltd. All rights reserved.