摘要
调查了贵州省张家湾子金矿苔藓植物,并利用原子荧光光谱仪AF-640和AAnalyst 800原子吸收光谱仪,对重污染区、相对污染区和清洁区苔藓植物优势种及土壤基质6种重金属元素(Cu、Zn、Cd、Pb、Hg、As)含量进行测定。在该金矿共采集苔藓样品75份,鉴定为9科16属23种。优势科为丛藓科和真藓科,生活型主要有4种:矮丛集型、高丛集型、交织型和平铺型,矮丛集型以80.3%占绝对优势。重金属含量测定结果表明,该矿区受Hg、As、Cd污染严重;硬叶净口藓对Cd的富集系数为5.58,属于强烈富集;匐灯藓对Cd富集系数为1.64,属于相对富集。苔藓与土壤重金属含量呈正相关,苔藓植物能监测该矿区重金属污染。
An investigation was conducted on the bryophytes in Zhangjiawanzi gold deposit area of Guizhou Province, and the fluorescence spectroscopy （AF-640） and absorption spectrophotom- eter AAnalyst 800 were used to measure the concentrations of 6 heavy metals （Cu, Zu, Cd, Pb, Hg, and As） in the dominant bryophyte species and soils in heavily polluted area, relatively pol- luted area, and clean area. A total of 75 bryophyte samples were collected, belonging to 23 spe- cies, 16 genera, and 9 families. The dominant families were Pottiaceae and Bryaceae, whose life-forms were mainly of short turfs, tall tufts, wefts, and mats. The short turfs were significantly dominant, taking up 80.3% of the total life-forms. The measurement of the heavy metals concen- trations indicated that this gold deposit area was heavily polluted by Hg, As, and Cd. The en- richment coefficient of Cd by Cymnostomum subrigidulum and Plagiomnium cuspidatum was 5.58 and 1.64, belonging to intensive and relative enrichment, respectively. The concentrations in the bryophytes and soils had a significant positive correlation, suggesting that bryophytes could be used for the monitoring of heavy metals pollution in this gold deposit area.
出处
《生态学杂志》
CAS
CSCD
北大核心
2013年第2期412-417,共6页
Chinese Journal of Ecology
基金
国家人力资源和社会保障部留学人员科技活动优秀项目[人社厅(2008)86号]
贵州科技厅社发科技公关项目[黔科合(2010)3020号]
贵州省教育厅自然科学基金项目[黔科教(2010)020号和黔科合J字(2009)2033号]资助
关键词
卡林型金矿
苔藓植物
重金属污染
监测
Carlin-type gold deposit
bryophyte
heavy metals pollution
monitoring.
