Int J Phytoremediation. 2014;16(7-12):1087-103. doi: 10.1080/15226514.2013.810586.
Waste dumps resulting from metal exploitation create serious environmental damage, providing soil and water degradation over long distances. Phytostabilization can be used to remediate these mining sites. The present study aims to evaluate the behavior of selected plant species (Erica arborea, Ulex europaeus, Agrostis delicatula, and Cytisus multiflorus) that grow spontaneously in three sulfide-rich waste-dumps (Lapa Grande, Cerdeirinha, and Penedono, Portugal). These sites represent different geological, climatic and floristic settings. The results indicate distinctive levels and types of metal contamination: Penedono presents highest sulfate and metal contents, especially As, with low levels of Fe. In contrast, at Lapa Grande and Cerdeirinha Fe, Mn, and Zn are the dominant metals. In accordance, each waste dump develops a typical plant community, providing a specific vegetation inventory. At Penedono, Agrostis delicatula accumulates As, Pb, Cu, Mn, and Zn, showing higher bioaccumulation factors (BF) for Mn (32.1) and As (24.4). At Cerdeirinha, Ulex europaeus has the highest BF for Pb (984), while at Lapa Grande, Erica arborea presents high BF for Mn (9.8) and Pb (8.1). Regarding TF, low values were obtained for most of the metals, especially As (TF < 1). Therefore, the results obtained from representative plant species suggest appropriate behavior for phytostabilization measures.
金属开采产生的废物堆造成了严重的环境破坏，导致土壤和水在长距离内退化。植物稳定化可用于修复这些采矿区。本研究旨在评估三种富含硫化物的废物堆（葡萄牙的拉帕格兰德、塞德雷尔哈和彭内登诺）中自然生长的选定植物物种（帚石楠、欧洲荆豆、细叶羊茅和多花紫藤）的行为。这些地点代表了不同的地质、气候和植物区系环境。结果表明存在不同水平和类型的金属污染：彭内登诺具有最高的硫酸盐和金属含量，尤其是砷，而铁含量较低。相比之下，拉帕格兰德和塞德雷尔哈的主要金属是铁、锰和锌。相应地，每个废物堆都形成了一个典型的植物群落，提供了一个特定的植被清单。在彭内登诺，细叶羊茅积累了砷、铅、铜、锰和锌，对锰（32.1）和砷（24.4）的生物积累因子（BF）较高。在塞德雷尔哈，欧洲荆豆的铅 BF 最高（984），而在拉帕格兰德，帚石楠对锰（9.8）和铅（8.1）的 BF 较高。关于转移因子（TF），大多数金属的数值都较低，特别是砷（TF < 1）。因此，从代表性植物物种获得的结果表明，植物稳定化措施具有适当的行为。
