植物修复
环境修复
土壤水分
开枪
温室
土壤污染
干旱
农学
环境科学
生物
植物
污染
生态学
土壤科学
作者
Ésio de Castro Paes,Gustavo Vieira Veloso,Manoel Nelson de Castro Filho,Saulo Henrique Barroso,Elpídio Inácio Fernandes-Filho,Maurício Paulo Ferreira Fontes,Emanuelle Mercês Barros Soares
标识
DOI:10.1016/j.jhazmat.2023.131034
摘要
Physical and chemical remediation techniques used in contaminated areas are expensive and damaging to the soil structure. Biological alternatives, such as phytoremediation, are economical and applicable to large areas. The main limitation of phytoremediation is identifying plants that are both capable of stabilizing and/or absorbing metals from soil and adapted to edaphoclimatic conditions of the contaminated areas. The objective of this study is to evaluate the ability of plant species adapted to Brazilian semi-arid conditions to grow in soils contaminated with Pb. A greenhouse experiment was carried out in a 4 × 5 factorial: four plant species (M. oleifera, P. juliflora, A. peregrina, and U. ruziziensis) and five Pb concentrations in soil (0.0; 0.52; 1.05; 2.10, and 4.20 g kg-1). All species grew at all Pb levels, but only P. juliflora and A. peregrina did not exhibit significant reductions in most growth variables. U. ruziziensis, despite showing reductions in growth variables, was the species with the highest dry matter accumulation in both shoots and roots, in addition to accumulating higher amounts of Pb. We conclude that the species P. juliflora, A. peregrina and U. ruziziensis are more suitable for cultivation in soils containing high levels of Pb.
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