长白山区是我国中纬度山地原始森林地区。区内植被类型多样,植物种类繁多,经济植物资源十分丰富,是开展森林生态系统研究的理想场所。生态学研究的一项重要任务,就是要找出生命系统与环境系统之间相互作用的规律,阐明物质、能量变换的机理。本文拟对长白山区各垂直带优势植物中微量元素的含量、分布特点及其相关关系进行研究,为揭示有机体与环境之间物质交换的实质提供部分科学依据。

Except only a few of the trace elements in dominant plants of different vertical landscape such as Sr,Se,Zn,etc.do follow normal distribution,but most of the others are of logarithmic normal or normal deviation distribution.Study indicated that these elements are stable in low concentration in these plants,but the frequency of their high concentration occurrence is rather low.study on the causes of high concentration occurrence of trace elementrs in thes eplants can help us to reveal the abnormality of environment or physiological functional characteristics of different plants.Study shows that the plants of certain kind have the characteristics of selectively assimilating and rich collecting certain chemical elements.So contents of the trace elements in different kinds of plants are different.Trace elements in these plants are not only controlled by hereditary function but also affected by environmental factors.