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首页> 外文期刊>International Journal of Phytoremediation >Native Plant Communities in an Abandoned Pb-Zn Mining Area of Northern Spain: Implications for Phytoremediation and Germplasm Preservation
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Native Plant Communities in an Abandoned Pb-Zn Mining Area of Northern Spain: Implications for Phytoremediation and Germplasm Preservation

机译：西班牙北部一个废弃的铅锌矿区的原生植物群落：对植物修复和种质资源保存的影响

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摘要

Plants growing on metalliferous soils from abandoned mines are unique because of their ability to cope with high metal levels in soil. In this study, we characterized plants and soils from an abandoned Pb-Zn mine in the Basque Country (northern Spain). Soil in this area proved to be deficient in major macronutrients and to contain toxic levels of Cd, Pb, and Zn. Spontaneously growing native plants (belonging to 31 species, 28 genera, and 15 families) were botanically identified. Plant shoots and rhizosphere soil were sampled at several sites in the mine, and analyzed for Pb, Zn and Cd concentration. Zinc showed the highest concentrations in shoots, followed by Pb and Cd. Highest Zn concentrations in shoots were found in the Zn-Cd hyperaccumulator Thlaspi caerulescens (mean = 18,254 mg Zn kg-1 DW). Different metal tolerance and accumulation patterns were observed among the studied plant species, thus offering a wide germplasm assortment for the suitable selection of phytoremediation technologies. This study highlights the importance of preserving metalliferous environments as they shelter a unique and highly valuable metallicolous biodiversity.
机译：在废弃矿山的含金属土壤上生长的植物具有独特的优势，因为它们能够应对土壤中的高金属含量。在这项研究中，我们对巴斯克地区（西班牙北部）废弃的Pb-Zn矿山中的植物和土壤进行了表征。事实证明，该地区的土壤缺乏主要的常量养分，并且含有镉，铅和锌的有毒水平。通过植物学鉴定了自发生长的本地植物（属于31种，28属和15个科）。在矿山的几个地点对植物的芽和根际土壤进行了采样，并分析了铅，锌和镉的浓度。锌在枝条中的浓度最高，其次是Pb和Cd。在Zn-Cd超积累性拟南芥（Thlaspi caerulescens）中发现了茎中最高的Zn浓度（平均= 18,254 mg Zn kg-1 DW）。在所研究的植物物种中观察到了不同的金属耐受性和积累模式，从而为适合选择植物修复技术提供了广泛的种质分类。这项研究强调了保护金属生命环境的重要性，因为它们可以保护独特且极有价值的金属生物多样性。

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