An international model validation exercise on radionuclide transfer and doses to freshwater biota
An international model validation exercise on radionuclide transfer and doses to freshwater biota
复制标题
关于淡水生物群放射性核素转移和剂量的国际模型验证练习
DOI：
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发表时间：
2010
影响因子：
1.5
通讯作者：
M. Wood
中科院分区：
文献类型：
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作者：
T. Yankovich;J. V. I. Batlle;S. Vives;N. Beresford;C. Barnett;K. Beaugelin;Justin Brown;J.;D. Copplestone;R. Heling;A. Hosseini;B. Howard;S. Kamboj;A. Kryshev;T. Nedveckaitė;Jim T. Smith;M. Wood
根据国际原子能机构（IAEA）的EMRAS（辐射安全环境建模）计划，使用11种建模方法预测了加拿大原子能有限公司白垩河实验室站点珀奇湖淡水初级生产商、无脊椎动物、鱼类、爬行动物和哺乳动物中60Co、90Sr、137Cs和3H的活动浓度。将不同物种类型的预测放射性核素浓度与实测值进行比较，突出了需要进一步开展工作和了解以改进放射性核素转移预测的一些领域。对于某些物种，这种差异可以用生态因素（如营养水平或稳定类似物的影响）来解释。与实测值相比，模型对哺乳动物物种和爬行动物的预测相对较差，部分原因是缺乏相关数据。此外，在代表其他水体条件的受控实验室条件下进行的实验得出的浓度比有时预测不足。
Under the International Atomic Energy Agency (IAEA)’s EMRAS (Environmental Modelling for Radiation Safety) programme, activity concentrations of 60Co, 90Sr, 137Cs and 3H in Perch Lake at Atomic Energy of Canada Limited’s Chalk River Laboratories site were predicted, in freshwater primary producers, invertebrates, fishes, herpetofauna and mammals using eleven modelling approaches. Comparison of predicted radionuclide concentrations in the different species types with measured values highlighted a number of areas where additional work and understanding is required to improve the predictions of radionuclide transfer. For some species, the differences could be explained by ecological factors such as trophic level or the influence of stable analogues. Model predictions were relatively poor for mammalian species and herpetofauna compared with measured values, partly due to a lack of relevant data. In addition, concentration ratios are sometimes under-predicted when derived from experiments performed under controlled laboratory conditions representative of conditions in other water bodies.