关键词: 藓类植物, 重金属, 原子吸收法, 生态修复

Abstract: crispulum，Anombryum gemmigerum and Tortula yunnanesis of Laowanchang Gold Mine in Guizhou and their soil are determined by atomic absorption spectrometry. Of the ten metals in the soil，the average concentration of Hg exceeds the value specified in the state standard for the third class soil environment by 3.676~5.111 times and As，by 14.276~17.467 times，illustrating that the soil in Laowangchang Gold Mine has been seriously polluted by Hg and As. The concentrations of metal elements in mosses plants are generally high and have certain relation to those in the relevant soil. In the mosses plants，there is a positive correlation between Cr and As and between Au and Cu at 0.05 level，a negative correlation between Au and Hg at 0.05 level and an evident negative relation between Au and Hg at 0.1 level.Trichostomum crispulum and Anombryum gemmigerum can strongly enrich Au and therefore，can be used as the plant indicator for Au prospecting.Anombryum gemmigerum can enrich Cr，Zn and Co and can be used as the materials for the ecological rehabilitation in areas that are seriously polluted by Cr，Zn and Co.  Tortula yunnanesis can enrich Pb and can be used to enrich Pb，which will play a role of ecological rehabilitation in areas seriously polluted by Pb.

Key words: Mosses plants, Heavy melts, Atomic absorption method, Ecological rehabilitation