| 彭芳芳,罗学刚,王丽超,赵鲁雪.铀尾矿周边污染土壤微生物群落结构与功能研究[J].农业环境科学学报,2013,32(11):2192-2198. |
| 铀尾矿周边污染土壤微生物群落结构与功能研究 |
| Microbial Community Structure and Function in Soils Around Uranium Tailings |
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| DOI：10.11654/jaes.2013.11.013 |
| 中文关键词: 铀尾矿 土壤 污染 微生物群落 多样性 |
| 英文关键词: uranium tailings soil pollution microbial community diversity |
| 基金项目: |
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| 中文摘要: |
| 为给铀尾矿周边污染土壤环境监测及生态修复提供科学参考依据，以我国某铀尾矿周边的污染土壤为研究对象，采用常规稀释平板法和Biolog-Eco微平板反应系统研究了高、中、低污染区的土壤微生物群落结构及功能多样性。结果表明，放射性污染从高到低的各级取样点的三类微生物数量大小为细菌>真菌>放线菌；与对照相比，各样点的AWCD下降了37.6%~92.0%，AWCD、Shannon指数（H'）、Simpson指数（D）与放射性核素的含量基本呈反比关系，而与有机质、全氮、碱解氮显著正相关；不同土壤微生物群落间的代谢特征随着污染程度的变化而变化，主成分分析表明这种变化主要体现在碳水化合物上。 |
| 英文摘要: |
| Soil microbes are sensitive to soil pollutants. Using microbiological technique could monitor soil pollution at the early stage. The structure and the functional diversity of soil microbial communities were investigated in soils around the uranium tailings in China, employing traditional dilution plate and Biolog-Eco system. The results showed that the population of soil microorganisms ranked as follows：bacteria>fungi>actinomyce. Compared with the control, the Average Well Color Development（AWCD） values decreased by（37.6%~92.0%） in soils around the uranium tailings. AWCD, Shannon index（H′） and Simpson index（D） all had an inverse correlation with the concentrations of radioactive nuclides, but a significant positive correlation with organic matter, total nitrogen, alkali solution nitrogen. The principal component analysis（PCA） showed that differences in metabolic characteristics of soil microbial community resulted mainly from carbohydrates utilization. This study might provide an option for eco-environmental monitoring around the uranium tailings. |
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