Dissipation of polycyclic aromatic hydrocarbons (PAHs) in the rhizosphere: Synthesis through meta-analysis

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• 作者：Bin Ma ; Yan He ; Huai-hai Chen ; Jian-ming Xu ; Zed Rengel
• 关键词：Meta-analysis ; Polycyclic aromatic hydrocarbons (PAHs) ; Dissipation ; Plant growth ; Phytoremediation
• 刊名：Environmental Pollution
• 出版年：2010
• 出版时间：March 2010
• 年：2010
• 卷：158
• 期：3
• 页码：855-861
• 全文大小：217 K

文摘

Polycyclic aromatic hydrocarbons (PAHs) are widespread and persistent organic pollutants with high carcinogenic effect and toxicity; their behavior and fate in the soil–plant system have been widely investigated. In the present paper, meta-analysis was used to explore the interaction between plant growth and dissipation of PAHs in soil based on the large body of published literature. Plants have a promoting effect on PAH dissipation in soils. There was no difference in PAH dissipation between soils contaminated with single and mixed PAHs. However, plants had a more obvious effect on PAH dissipation in freshly-spiked soils than in long-term field-polluted soils. Additionally, a positive effect of the number of microbial populations capable of degrading PAHs was observed in the rhizosphere compared with the bulk soil. Our meta-analysis established the importance of the rhizosphere effect on PAH dissipation in variety of the soil–plant systems.