Pb Accumulative Characteristics of Several Lead Accumulation of Ornamental Asteraceae
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摘要: 为寻找铅污染土壤净化和景观化材料,采用盆栽方法,研究3种菊科观赏花卉在铅污染条件下对铅的富集特征。结果表明3种花卉中观赏向日葵地上部和根部吸收富集铅的含量最大,积累铅能力最强,其次为百日草,勋章菊吸收积累铅能力最弱。在Pb浓度为1 000mg·kg-1时,观赏向日葵和百日草耐性较强,可用作铅污染土壤的稳定修复植物。Abstract: To study the environmental Pb toxicity,decontamination and beautification,apot-experiment was conducted with three ornamental flowering plants to determine their Pb-absorption properties.The results showed that Helianthus annuus L.had a greater capability of accumulating Pb in shoots and roots than either Zinnia elegans Jacq or Gozania splendens.H.annuus L.andZ.elegans Jacq exhibited strong endurance to high concentration of Pb,and were considered to be potentially applicable for soil decontamination and proper maintenance.
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Key words:
- Lead pollution /
- phytoremedation /
- ornamental flower
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