Yanqun Zu, Yuan Li, Schvartz Christian, Langlade Laurent, Fan Liu
Eco-environment Research Institute, College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, PR China.
Environ Int. 2004 Jun;30(4):567-76. doi: 10.1016/j.envint.2003.10.012.
A field survey of higher terrestrial plants growing on Lanping lead-zinc mine, China were conducted to identify species accumulating exceptionally large concentrations of Pb, Cd, Cu and Zn of 20 samples of 17 plant species. Concentrations of Pb and Zn in soil and in plant were higher than that of Cu and Cd. Significant difference was observed among the average concentrations of four heavy metals in plants (except Cd and Cu) and in soil (except Pb and Zn) (P<0.05). For the enrichment coefficient of the four heavy metals in plant, the order of average was Pb<Cu<Cd<Zn. Between four heavy metals, only significant difference was observed between the enrichment coefficient average of Cd and Cu (P<0.05). The enrichment coefficients were higher than 1 in Llex plyneura and Rhododendron annae in Paomaping for Pb, Salix cathayana, L. plyneura and R. annae in Paomaping for Cd, and R. annae in Paomaping for Zn, respectively. Concentrations and enrichment coefficient of Pb, Cd and Zn of Rhododendron were higher than that of Gramimeae. Enrichment coefficient of Pb, Cd and Zn were bush>tree>herbaceous, and herbaceous grew in soil with the highest concentrations of four heavy metals. In different areas, the concentrations of Pb, Cd, Cu and Zn in plants and soils and enrichment coefficient were different. Plants in Paomaping had more accumulating ability to Pb, Cd and Zn, and plants in Jinfeng River had more accumulating ability to Cu. Six plant species, i.e. S. cathayana, Lithocarpus dealbatus, L. plyneura, Fargesia dura, Arundinella yunnanensis and R. annae in Paomaping, had high accumulation capacity. R. annae in Paomaping had hyperaccumulating capacity to Pb, Cd and Zn, L. plyneura to Pb and Cd, and S. cathayana to Cd, respectively.
对中国兰坪铅锌矿生长的高等陆生植物进行了实地调查，以确定17种植物20个样本中积累异常高浓度铅、镉、铜和锌的物种。土壤和植物中铅和锌的浓度高于铜和镉。植物（镉和铜除外）和土壤（铅和锌除外）中四种重金属的平均浓度存在显著差异（P<0.05）。植物中四种重金属的富集系数平均顺序为铅<铜<镉<锌。四种重金属之间，仅镉和铜的富集系数平均值存在显著差异（P<0.05）。泡马坪的多脉冬青和大树杜鹃对铅的富集系数高于1，泡马坪的中国沙柳、多脉冬青和大树杜鹃对镉的富集系数高于1，泡马坪的大树杜鹃对锌的富集系数高于1。杜鹃对铅、镉和锌的浓度和富集系数高于禾本科。铅、镉和锌的富集系数为灌木>乔木>草本，草本生长在四种重金属浓度最高的土壤中。不同区域植物和土壤中铅、镉、铜和锌的浓度及富集系数不同。泡马坪的植物对铅、镉和锌的积累能力更强，金风河的植物对铜的积累能力更强。泡马坪的六种植物，即中国沙柳、白皮柯、多脉冬青、硬刺竹、云南野古草和大树杜鹃，具有较高的积累能力。泡马坪的大树杜鹃对铅、镉和锌具有超积累能力，多脉冬青对铅和镉具有超积累能力，中国沙柳对镉具有超积累能力。
