摘要
研究了微量元素Fe、Mn、Zn、Cu、Sr、Ba在我国典型海域主要生物类别中的概率分布特征,并与常量元素Ca、Mg进行了比较。结果表明,微量元素的概率分布曲线具正偏态性质,概率分布类型大多为对数正态分布或近似对数正态分布,表明对某一特定微量元素,大多数生物体中的含量都比较低,只有个别生物有不成比例的高含量。常量元素Ca与微量元素相似,表现为对数正态分布,而Mg却具正态分布特征。本文给出了我国典型海域生物体中元素含量的总体分布特征。
The probability distribution of the trace elements Fe, Mn, Zn, Cu, Sr and Ba in the marine organisms collected from the typical Chinese coastal water swere studied and compared with those of major elements Ca and Mg. All the distributions for the trace elements in macrophytes, benthic molluscs, crustaceans, cephalopods and different tissues in the fish (muscle, liver and bone) were nearly found to show the positive skewness, and a relatively large number of the marine organisms with low concentrations for the element and only a few organisms with disproportionately high concentrations. Their distribution types were generally logarithmic normal distribution or nearly logarithmic normal distribution. Distribution of Ca was similar to the trace elements, while Mg the normal distribution. Average concentrations of the major elements in the organisms were calculated based on their probability distributions.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2003年第2期1-5,共5页
Marine Environmental Science
基金
教育部博士学科重点项目(96038412)
关键词
海洋生物
微量元素
概率分布
中国近海
marine organisms
trace elements
frequency distribution
Chinese coastal waters
