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环境生态系统散落核素示踪研究新进展

DOI: 10.11867/j.issn.1001-8166.2000.02.0172, PP. 172-177

Keywords: 210Pb、137Cs和7Be,环境生态系统,国际生态大会

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Abstract:

环境生态系统中的放射性核素既具有生态毒性,对生物和人体健康产生重要影响,又具有稳定的衰变函数和输入通量,对环境生态系统具有重要示踪价值。人类可利用放射性核素来认识环境生态系统①环境生态系统中放射性核素的基准放射性强度与环境生态系统之间的平衡关系;②环境生态系统中放射性核素的行为在环境生态系统不同宿体和组分间的运移关系。考察放射性核素在生态系统不同环节中比活度的变化有助于认识环境生态过程生物地球化学作用的影响。

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