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对河北白洋淀和北京密云水库的野生鲤鱼耳石和水体中的微量元素进行了定量分析。白洋淀鱼耳石中诸微量元素含量均高于密云水库的鱼耳石,反映了白洋淀各水体较密云水库水体的环境复杂,污染程度高。统计分析结果表明,在鱼耳石中大致存在两类生物地球化学习性不同的元素,水体中第一类元素的变化不会引起耳石中相应元素的响应,如Au、K和Na;第二类元素的变化会引起耳石中相应元素的强烈响应,如As、Ba、Co、Cr、Fe、Sr和Zn。诸微量元素在耳石中富集的强弱顺序为,Zn>Sr>Se>Fe>As>Ba>K>Co>Au>Na>Cr。通过相关性分析发现,白洋淀和密云水库的鱼耳石和水体中对应微量元素平均含量的自然对数值之间均存在良好的线性关系。
The trace elements in the wild carp otolith and water of Baiyangdian Lake in Hebei Province and Miyun Reservoir in Beijing were quantitatively analyzed. The content of trace elements in fish otolith of Baiyangdian was higher than that of fish otolith in Miyun Reservoir, reflecting the complex environment and high pollution degree of each water body of Baiyangdian Lake. Statistical analysis shows that there are roughly two types of elements with different biogeochemical behaviors in fish otoliths. The changes of the first kind of elements in water body do not cause the corresponding elements of otoliths such as Au, K and Na. The change of the second kind of element will cause the intense response of the corresponding element in the otolith, such as As, Ba, Co, Cr, Fe, Sr and Zn. The order of enrichment of trace elements in otolith is Zn> Sr> Se> Fe> As> Ba> K> Co> Au> Na> Cr. Correlation analysis showed that there is a good linear relationship between the natural logarithm of the average content of trace elements in fish otoliths and water bodies in Baiyangdian and Miyun reservoirs.