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中文摘要：
为探讨青藏高原地区苔藓植物对重金属元素的积累状况,在海北站和三江源站的灌丛及草甸采集苔藓植物样品,利用原子吸收光谱仪法（AAS）测定了这些苔藓植物体内19种化学元素的含量。结果表明：青藏高原海北和果洛的苔藓植物体内重金属元素Hg,Cd,Zn和Cr的含量不仅高于国内的贡嘎山原始森林地带,也高于国外的意大利、芬兰、挪威等地区;海北的沼泽化草甸和金露梅（Potentila fruticosa）灌丛草甸,以及果洛的嵩草（Kobresia humilis）草甸和金露梅灌丛草甸的苔藓植物中化学元素的积累有明显差异。如除了K元素外,Ca和Mg元素在海北草甸苔藓体内的含量略高于果洛草甸。此外,苔藓植物体内Cd-Co,Cd-Ni,Cu-Se等元素间存在显著正相关关系。
英文摘要：
In this study, moss samples were collected from the shrubs and meadows of Haibei station and＂ Three-River Headwaters station to explore moss accumulation capacity of heavy metals on Qinghai-Tibet Plateau. Nineteen elements in these moss samples were analyzed by means of the Atomic Absorption Spec- trometry. Results of statistical analysis showed that the enrichment concentration of heavy metal elements such as Hg, Cd, Zn, C was higher than samples from Gongga montain forests, especially higher than samples from similar areas of Italy, Finland, and Norway. The enrichment concentration of chemical ele- ments had significant diffexence between alpine meadow of Potentila fruticosa in Haibei and Kobresia hu- mills in Guoluo. In addition, these results also showed that there were significant positive correlations be- tween Cd and Co, Cd and Ni, Cu and Se in tested moss samples.
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