School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100, Joensuu, Finland.
Department of Forestry & Range Management, University of Agriculture, Faisalabad, 38000, Pakistan.
Environ Sci Pollut Res Int. 2020 Dec;27(36):45555-45567. doi: 10.1007/s11356-020-10453-4. Epub 2020 Aug 15.
Soils polluted by organic or inorganic pollutants are an emerging global environmental issue due to their toxic effects. A phytoremediation experiment was conducted to evaluate the extraction potential of three European aspen clones (R2, R3, and R4) and seven hybrid aspen clones (14, 27, 34, 134, 172, 191, and 291) grown in soils polluted with hydrocarbons (includes polycyclic aromatic hydrocarbons (PAH) and total petroleum hydrocarbons (TPH)). Height growth, plant survival rates, and .hydrocarbon removal efficiencies were investigated over a 4-year period at a site in Somerharju, Luumaki Finland, to assess the remediation potential of the clones. Hydrocarbon content in the soil was determined by gas chromatography and mass spectrometry. The results revealed that hybrid aspen clones 14 and 34 and European aspen clone R3 achieved greater height growth (171, 171, and 114 cm, respectively) than the other clones in the study. Further, the greatest removals of PAH (90% at depth 10-50 cm) and (86% at depth 5-10 cm) were observed in plot G15 planted with clone R2. Furthermore, the greatest TPH removal rate at 5-10 cm depth (C-C, 97%; C-C, 96%; and C-C, 90%) was observed in plot 117 with clone 134. However, other clones demonstrated an ability to grow in soils with elevated levels of TPH and PAH, which indicates their tolerance to hydrocarbons and their potential capacity for phytoremediation of hydrocarbon-polluted soils. Our study suggests that European aspen and hybrid aspen clones could be used for the remediation of soils polluted with PAH and TPH.
受有机或无机污染物污染的土壤因其毒性效应而成为一个新兴的全球环境问题。进行了一项植物修复实验，以评估在受碳氢化合物（包括多环芳烃（PAH）和总石油烃（TPH））污染的土壤中生长的三个欧洲白杨无性系（R2、R3 和 R4）和七个杂交白杨无性系（14、27、34、134、172、191 和 291）的提取潜力。在芬兰卢马基的萨默哈鲁（Somerharju）的一个地点进行了为期 4 年的研究，调查了株高生长、植物存活率和.烃去除效率，以评估无性系的修复潜力。通过气相色谱和质谱法测定土壤中的烃含量。结果表明，与研究中的其他无性系相比，杂交白杨无性系 14 和 34 以及欧洲白杨无性系 R3 的株高生长（分别为 171、171 和 114 厘米）更高。此外，在种植无性系 R2 的 G15 小区中观察到 PAH 的最大去除率（在 10-50 厘米深度处为 90%）和（在 5-10 厘米深度处为 86%）。此外，在种植无性系 134 的 117 小区中，在 5-10 厘米深度处观察到 TPH 的最大去除率（C-C，97%；C-C，96%；和 C-C，90%）。然而，其他无性系在含有高浓度 TPH 和 PAH 的土壤中也表现出生长能力，这表明它们对碳氢化合物具有耐受性，并有潜力用于修复受碳氢化合物污染的土壤。我们的研究表明，欧洲白杨和杂交白杨无性系可用于修复受 PAH 和 TPH 污染的土壤。
