| 吕 俊,尹 华,叶锦韶,彭 辉,刘 京.杂交狼尾草对土壤锌/十溴联苯醚复合污染的生理响应及修复[J].农业环境科学学报,2013,32(12):2369-2376. |
| 杂交狼尾草对土壤锌/十溴联苯醚复合污染的生理响应及修复 |
| Physiological Responses and Phytoremediation Effects of Pennisetum americanum on Zn/BDE-209 Co-contaminated Soils |
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| DOI：10.11654/jaes.2013.12.009 |
| 中文关键词: 十溴联苯醚 锌 复合污染 植物修复 杂交狼尾草 |
| 英文关键词: BDE-209 Zn co-contamination phytoremediation Pennisetum americanum |
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| 摘要点击次数: 2023 |
| 全文下载次数: 2104 |
| 中文摘要: |
| 采用室内盆栽试验，研究了杂交狼尾草对土壤中Zn/十溴联苯醚（BDE-209）污染的生理响应及修复效果。结果表明，杂交狼尾草的生物量随着BDE-209浓度增大而升高，低中浓度Zn/BDE-209复合污染明显促进了植株生长；在单一BDE-209和复合两种污染条件下，随着污染物浓度上升，丙二醛（MDA）含量上升，可溶性蛋白质含量、超氧化物歧化酶（SOD）活性均呈下降趋势；植物地下部分对Zn和BDE-209的积累均大于地上部分，随着BDE-209浓度增大，植物对Zn和BDE-209积累量上升，低中浓度Zn/BDE-209复合污染对积累、转运Zn和BDE-209均有促进作用，植物地下部分对Zn的富集系数高达7.78；杂交狼尾草对复合污染土壤中BDE-209去除率高达60.73%，不同去除效果为根际去除率>非根际去除率>无植物去除率。 |
| 英文摘要: |
| Phytoremediation is an environment-friendly and cost-effective technology to reduce contaminants in the environment. A pot experiment was conducted in a greenhouse to investigate the physiological responses and the phytoremediation effects of Pennisetum americanum on Zn and BDE-209 combined pollutants in soils. Biomass of P. americanum escalated with single BDE-209, and also Zn/BDE-209 co-presence at low and moderate concentrations. Under BDE-209 alone and Zn/BDE-209 in combination, increasing their concentrations increased MDA contents, but decreased soluble protein contents and SOD activities. Concentrations of BDE-209 and Zn were significantly higher in roots than in shoots. Accumulation of Zn and BDE-209 by plant was enhanced by increased BDE-209 levels. Low and moderate Zn/BDE-209 co-contamination promoted accumulation and translocation of Zn and BDE-209 in plant, especially for Zn, the bioaccumulation factor of which increased to 7.78 in the underground parts of plant. The maximum removal efficiency of BDE-209 by P. americanum was 60.73% in co-contaminated soils, with higher in the rhizosphere than nonrhizosphere. |
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