Phytoremediation potential of transplanted bare-root seedlings of trees for lead/zinc and copper mine tailings
Phytoremediation potential of transplanted bare-root seedlings of trees for lead/zinc and copper mine tailings
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移植裸根树苗对铅锌和铜矿尾矿的植物修复潜力
DOI：
10.1080/15226514.2016.1189399
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发表时间：
2016-05
影响因子：
3.7
通讯作者：
Jiang, Ze-Ping
中科院分区：
文献类型：
--
作者：
Sun, Hai-Jing;Liu, Cai-Xia;Liu, Jian-Feng;Jiang, Ze-Ping
选择能够克服不利条件和提高退化矿区恢复的植物物种仍然是一个挑战。通过盆栽试验，研究了移植苗木用于铅锌、铜矿尾矿植物修复的可行性。以1年生的木本植物盐肤木（Rhus chinensis Mill）、麻栎（Quercus acutissima Carruth）、枫香（Liquidambar formosana Hance）、蔓荆子（Vitex trifolia Linn.）变种将三种具有金属耐性的植物（Simplicifolia Cham、Lespedeza cuneata和Amorpha fruticosa Linn）移植到装有尾矿的盆中，并作为潜在的金属耐性植物进行测试。幼苗存活，植物生长，根系性状，养分吸收，金属积累和转运进行了评估。这6种植物在两种尾矿中均能生长，且表现出不同的耐受性。A.紫穗槐对Zn、Pb、Cu的耐受性较强，在两种尾矿中均能正常生长。6种植物根中金属含量均高于地上部。所有物种的生物浓缩和转移系数值均较低。然而，R. chinensis和L. Pb和Zn的迁移因子值分别为0.88和1.78，台湾龙须草显著高于其它物种。固氮菌A.结果表明，紫穗槐的生物量和耐性最高，在南方尾矿库的植物修复中具有很大的应用潜力。
ABSTRACT Selecting plant species that can overcome unfavorable conditions and increase the recovery of degraded mined lands remains a challenge. A pot experiment was conducted to evaluate the feasibility of using transplanted tree seedlings for the phytoremediation of lead/zinc and copper mine tailings. One-year-old bare-root of woody species (Rhus chinensis Mill, Quercus acutissima Carruth, Liquidambar formosana Hance, Vitex trifolia Linn. var. simplicifolia Cham, Lespedeza cuneata and Amorpha fruticosa Linn) were transplanted into pots with mine tailings and tested as potential metal-tolerant plants. Seedling survival, plant growth, root trait, nutrient uptake, and metal accumulation and translocation were assessed. The six species grew in both tailings and showed different tolerance level. A. fruticosa was highly tolerant of Zn, Pb and Cu, and grew normally in both tailings. Metal concentrations were higher in the roots than in the shoots of the six species. All of the species had low bioconcentration and translocation factor values. However, R. chinensis and L. formosana had significantly higher translocation factor values for Pb (0.88) and Zn (1.78) than the other species. The nitrogen-fixing species, A. fruticosa, had the highest tolerance and biomass production, implying that it has great potential in the phytoremediation of tailing areas in southern China.
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