水土保持学报2011，Vol.25Issue(6)：216-220,5.
广东大宝山矿区植物对重金属的富集特征
Heavy Metal Accumulation Characteristics of Plants in Dabaoshan Mine in Guangdong Province
摘要
Abstract
The author researched about the pollution condition of root soil and heavy metal accumulation characteristics of 13 kinds of dominant plants naturally settled or human cultivated in the Dabaoshan mine. The results showed that soil in Dabaoshan mine was polluted by heavy metal Cd? Pb, Zn and Cu, especially by Cd and Cu. In this research, the Pb content of aerial parts of Panicum repens reached 1 214. 00 mg/kg; the Cu content of Pauloiv-nia fortunei leaves reached 1 024. 80 mg/kg, both of which were more than 1 000 mg/kg. The threshold of Pb and Cu hyper-accumulation plants; the biological transfer coefficients were 1. 77 and 13. 74, greater than 1.0, which were also satisfied with the standard of hyper-accumulation plants, indicating that Panicum re-pens might be a kind of Pb hyper-accumulation plant, and Pauloumia fortunei might be a kind of Cu hyper-accumulation plant. Though the other 11 kinds of dominant plants did not fit the standard of hyper-accumulation plants of absorbing heavy metals, the fact that they could settle in this region showed they also had strong heavy metals tolerance. Pennisetum purpureum, Ischaemum ciliare, Dicranopteris dichotoma, Miscanthus floridulus and Pinus massoniana were significantly tolerant to the heavy metal pollution stress, which could be served as pioneer species in the procedure of vegetation reconstruction of Dabaoshan mine.关键词
重金属/污染/优势植物/富集特征/大宝山矿Key words
heavy metal/ pollution/ dominant plant/ accumulation characteristic/ Dabaoshan mine分类
资源环境引用本文复制引用
陈三雄,陈家栋,谢莉,廖建文,张金池,杨群良..广东大宝山矿区植物对重金属的富集特征[J].水土保持学报,2011,25(6):216-220,5.基金项目
中水珠江规划勘测设计有限公司科研项目(2009-03) （2009-03）
