Institut de recherche en biologie végétale and Université de Montréal, Montreal, QC, Canada.
Institut de recherche en biologie végétale and Montreal Botanical Garden, Montreal, QC, Canada.
Chemosphere. 2021 Sep;279:130517. doi: 10.1016/j.chemosphere.2021.130517. Epub 2021 Apr 16.
Phytoremediation of copper contaminated soil poses particular difficulties because of the low Cu mobility in the soil. Although several plant species, such as willows or Brassicaceae, have been used in the phytomanagement of abandoned brownfields, certain trace elements, such as copper often remain difficult to treat or remove from contaminated soils. An experiment was conducted under semi-controlled conditions to test the phytoremediation potential of co-planting two crop species, Brassica napus L. and Salix nigra 'S05', in soil spiked with two concentrations of Cu (500 mg kg and 800 mg kg). Particular attention was given to the potential of 1) the co-plantation design and 2) uprooting, to efficiently mimic the remediation of a Cu-contaminated soil. Results showed that most Cu was found in plant roots and that the polyculture treatment produced the most overall biomass and maximum stabilization and extraction of Cu of the three treatments tested, regardless of contamination level.
由于土壤中铜的流动性较低，铜污染土壤的植物修复存在特殊困难。尽管柳树或十字花科等几种植物已被用于废弃棕地的植物管理，但某些微量元素，如铜，通常仍难以处理或从污染土壤中去除。在半控制条件下进行了一项实验，以测试两种作物（油菜和黑柳‘S05’）共植在两种铜浓度（500mgkg 和 800mgkg）污染土壤中的植物修复潜力。特别关注了 1）共植设计和 2）连根拔起的潜力，以有效地模拟受污染土壤的修复。结果表明，大多数铜存在于植物根部，与单一种植相比，混植处理在三种处理方式中产生了最大的生物量和对 Cu 的最大稳定化和提取，而与污染水平无关。
