Heavy metal accumulation by panicled goldenrain tree (Koelreuteria paniculata) and common elaeocarpus (Elaeocarpus decipens) in abandoned mine soils in southern China.
Heavy metal accumulation by panicled goldenrain tree (Koelreuteria paniculata) and common elaeocarpus (Elaeocarpus decipens) in abandoned mine soils in southern China.
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DOI：
10.1016/s1001-0742(08)62274-3
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发表时间：
2009
影响因子：
6.9
通讯作者：
D. Tian;F. Zhu;Wende Yan;X. Fang;W. Xiang;X. Deng;Guangjun Wang;C. Peng
中科院分区：
文献类型：
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作者：
D. Tian;F. Zhu;Wende Yan;X. Fang;W. Xiang;X. Deng;Guangjun Wang;C. Peng
植物修复技术是一种可持续的矿山废弃物修复技术。本研究调查了废弃矿区土壤和植物样品中7种重金属污染物的浓度。结果表明，经过植被修复后，7种重金属的去除率在4.2%~ 86%，其中Zn、Mn、Cd、Ni 4种重金属的去除率超过50%。Zn、Mn、Ni、Co在栾树和杜英中的传递系数均大于1。两种树种对Mn的富集系数均大于1。我们的研究结果表明，圆锥花序的金合欢树和常见的杜英树可以作为修复。此外，废弃矿区的木本植被修复除了去除污染土壤中的重金属外，在改善景观方面也具有重要作用。
Phytoremediation can be used as a sustainable technology for mine spoil remediation to remove heavy metals. This study investigated the concentration of 7 heavy metal contamination in soil and plant samples at an abandoned mine site. We found that, after vegetation remediation at the abandoned mine site, the reduction rates for 7 heavy metals were in the range of 4.2%—86%, where reduction rates over 50% were achieved for four heavy metals (Zn, Mn, Cd, Ni). Transfer coefficients of the panicled goldenrain tree (Koelreuteria paniculata Laxm) and the common elaeocarpus (Elaeocarpus decipens) for Zn, Mn, Ni, and Co were more than 1. Enrichment coefficients of both trees for Mn were higher than 1. Our results suggest that the panicled goldenrain tree and the common elaeocarpus tree may act as accumulators in remediation. Moreover, the woody vegetation remediation in abandoned mining areas play an important role in improving scenery besides removing heavy metal from contaminated soil.