Time trends (1986-2003) of radiocesium transfer to roe deer and wild boar in two Austrian forest regions
Time trends (1986-2003) of radiocesium transfer to roe deer and wild boar in two Austrian forest regions
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DOI：
10.1016/j.jenvrad.2006.02.009
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发表时间：
2007-01-01
影响因子：
2.3
通讯作者：
Tataruch, F.
中科院分区：
文献类型：
--
作者：
Strebl, F.;Tataruch, F.
从切尔诺贝利事故发生后不久开始，从奥地利两处污染相对较高的森林中提取的狍子和野猪样本被定期分析是否含有铯-137。1995年以前，狍和野猪体内铯-137的平均浓度均超过1000 Bq kg（-1）。两个调查地点的长期和季节性趋势相似。Cs-137聚合转移因子（Tag）值在狍中呈显著下降趋势（生态半衰期分别为8.6年和7.2年），而野猪的t -ag值变化很大，但在过去几年中呈上升趋势。1987-2003年狍的t -ag值在0.04 ~ 0.008 m(2) kg（-1）鲜重之间；野猪的值在0.008 m(2) kg(-1)（1988年）和0.046 m(2) kg(-1)（1996年）之间。这两个物种的季节性趋势与德国森林的观察结果很好地吻合：与上半年（1月至7月）相比，鹿茸在下半年（8月至12月）的食用量增加导致其Cs-137 t- ag值更高。野猪的t -ag值在上半年是最高的。(c) 2007 Elsevier Ltd.版权所有。
Starting shortly after the Chernobyl accident, samples of roe deer and wild boar from two comparatively highly contaminated Austrian forest stands have been regularly analysed for Cs-137. Until 1995 average Cs-137 concentrations exceeded 1000 Bq kg(-1) in both roe deer and wild boar. Long-term and seasonal trends are similar in both investigation sites. While Cs-137 aggregated transfer factor (Tag) values show a significant decreasing trend in roe deer (ecological half-time 8.6 and 7.2 years, respectively), T-ag-values in wild boar are highly variable, but rather increasing values are observed over the last years. T-ag-values for roe deer are between 0.04 and 0.008 m(2) kg(-1) fresh weight (1987-2003); values for wild boar are between 0.008 m(2) kg(-1) (1988) and 0.046 m(2) kg(-1) (1996) fresh weight. Seasonal trends for both species are in good agreement with observations from German forests: increased mushroom ingestion leads to higher Cs-137 T-ag-values for roe deer in the second half of the year (August-December) compared to the first half (January-July). T-ag-values for wild boar are highest in the first half of the year. (c) 2007 Elsevier Ltd. All rights reserved.