贵州主要汞矿废弃地带的植物及其对汞的富集能力  

Plant Species in Main Abandoned Mercury Mines and Their Enrichment Capacity of Mercury in Guizhou

作　　者：刘雅妮[1] 张习敏[1] 徐小蓉[1] 刘伦衔[1] 乙引[1] 

机构地区：[1]贵州师范大学生命科学学院,贵州贵阳550001

出　　处：《贵州农业科学》2014年第11期248-250,254,共4页Guizhou Agricultural Sciences

基　　金：长江学者和创新团队发展计划资助项目(PCSIRT);贵州省重点实验室建设项目[黔科合计Z字(2011)4005];贵州省社发攻关项目[黔科合SY(2011)3094]

摘　　要：为寻找喀斯特地貌具有汞富集作用的优势植物,对贵州万山、务川、开阳主要汞矿区废弃地带的植物进行调查表明,采矿区与矿渣区共有17种植物,其中蜈蚣草、荩草等8种植物数量较多,均为20株以上;苍耳、蜈蚣草等6种植物地上部鲜重较多,均为100g以上;蜈蚣草、狗尾草等7种植物地上部汞含量较多,均高于1mg/kg。狗尾草、蜈蚣草的汞富集系数较高。综合比较各项指标,蜈蚣草对于汞污染土壤的适应和富集具有一定的优势。Plant species in abandoned lands of Wanshan,Wuchuan and Kaiyang mercury mines in Guizhou were investigated to seek dominant plants with mercury enrichment capacity in karst area.There are 17 plant species in mining area and slag area.The quantity of Pteris vittata,Arthraxon hispidus and other six species is higher and more than 20 plants of each species can be found in a sample plot.The fresh weight of the aboveground part of Xanthium sibiricum,Pteris vittata and other 4species is above 100 g.The mercury content of Pteris vittata、Setaria viridis and other 5species is above 1mg/kg.Setaria viridis and Pteris vittata are of higher mercury enrichment coefficient in 17 plant species.In conclusion,Pteris vittata has the good adaptability to soil polluted with mercury and higher mercury enrichment capacity according to integrated indexes.

关 键 词：汞矿区 汞富集 蜈蚣草 植物 贵州 

分 类 号：S19[农业科学—农业基础科学]