[长期多环芳烃污染土壤中微生物群落结构的特征]。

Q2 Environmental Science
Yang-Yang Jiao, Ting Wu, Rui Li, Gao-Peng Bian, Hai-Hua Jiao, Zhi-Hui Bai
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引用次数: 0

摘要

长期被多环芳烃(PAHs)污染的自然生境土壤微生物群落结构特征,有助于认识污染土壤的潜在风险和生态功能变化。微生物是土壤生态系统中物质循环和功能稳定的促进者。对长期高浓度多环芳烃污染土壤的微生物群落结构研究较少。本研究通过野外调查和16S rRNA基因高通量测序分析,探讨了多环芳烃对山西某焦化厂周边受多环芳烃污染的农业土壤微生物群落结构的影响。结果表明:土壤微生物种类繁多,共有40门769属1610种;Proteobacteria、Actinobacteria、Chloroflexi、Acidobacteria和gemmatimonadees为优势类群,总丰度为79.8%。在属和种水平上均未发现明显的优势类群。电导率(EC)、pH、总有机质(TOC)、总钾(TK)、速效钾(AK)、二苯并(a,h)蒽(DaA)、苯并(a)蒽(BaA)、蒽(Ant)是微生物群落的首要驱动因子(R2≥0.10)。可溶性磷(AP)、速效氮(AN)和苊(Acy)、苯并(b)荧光蒽(BbF)、荧光蒽(Fla)和芘(Pyr)是第二驱动因素(0.05≤R2 <;0.10)。总氮(TN)、总磷(TP)、菲(Phe)、苯并(a)芘(BaP)、蒽(Chry)、苯并(k)荧光蒽(BkF)和茚(1,2,3-cd)芘(InP)是第三驱动因子(R2 <;0.05)。该研究将为多环芳烃污染土壤的生态风险管理和微生物修复技术研究提供一定的理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Characterization of Microbial Community Structure in Long-term Polycyclic Aromatic Hydrocarbon-contaminated Soil].

Characterizing the structure of soil microbial communities in natural habitats chronically contaminated with polycyclic aromatic hydrocarbons (PAHs) contributes to the understanding of potential risks and changes in ecological functions of contaminated soils. Microorganisms are facilitators of material cycling and functional stability in soil ecosystems. Few studies are available on the microbial community structure of soil contaminated with long-term high concentrations of PAHs. In this study, we investigated the effects of PAHs on soil microbial community structure in natural habitats using field surveys and high-throughput sequencing analysis of 16S rRNA genes in agricultural soils contaminated with PAHs around a coking plant in Shanxi. The results showed that soil microorganisms were diverse (40 phyla, 769 genera, and 1610 species). Proteobacteria, Actinobacteria, Chloroflexi, Acidobacteria, and Gemmatimonadetes were the dominant taxa, with a total abundance of 79.8%. No obvious dominant taxa was observed at the genus and species levels. Electrical conductivity (EC); pH; total organic matter (TOC); total potassium (TK); fast-acting potassium (AK); and Dibenzo(a,h)anthracene (DaA), Benzo(a)anthracene (BaA), and Anthracene (Ant) were the first drivers of the microbial community (R2≥ 0.10). Soluble phosphorus (AP); fast-acting nitrogen (AN); and Acenaphthylene (Acy), Benzo(b)fluoranthene (BbF), Fluoranthene (Fla), and Pyrene (Pyr) were the second drivers (0.05 ≤ R2 < 0.10). Total nitrogen (TN); total phosphorus (TP); and Phenanthrene (Phe), Benzo(a)pyrene (BaP), Chrysene (Chry), Benzo(k)fluoranthene (BkF), and Indeno(1,2,3-cd)pyrene (InP) were the third driving factors (R2 < 0.05). The study will provide some theoretical basis for the research of ecological risk management and microbial remediation technology of PAHs-contaminated soil.

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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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