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当前位置: 首页 > 文章 > 氧调控下人工湿地微生物群落结构变化研究 农业环境科学学报 2012,31 (06) 1195-1202
Position: Home > Articles > Changes in Microbial Community Structure in Constructed Wetland Under Aeration Condition Journal of Agro-Environment Science 2012,31 (06) 1195-1202

氧调控下人工湿地微生物群落结构变化研究

作  者：
陶敏;贺锋;徐洪;周巧红;徐栋;张丽萍;吴振斌
单  位：
中国科学院水生生物研究所淡水生态和生物技术国家重点实验室;中国地质大学(武汉)
关键词：
复合垂直流人工湿地;氧调控;微生物群落结构;磷脂脂肪酸
摘  要：
运用磷脂脂肪酸(PLFAs)技术研究了氧调控下复合垂直流人工湿地(IVCW)微生物群落结构及活性变化,结果表明,不曝气IVCW基质表层以好氧微生物为优势种群,但绝大部分微生物都集中在0～20cm基质层,系统的净化空间受到限制;氧调控下微生物群落向基质纵深发展,表征好氧微生物的单不饱和脂肪酸的含量显著增加,曝气系统下行池表层各类群微生物的生物量为不曝气系统的2～6倍,表征微生物活性的PLFAs总不饱和度水平也明显升高;革兰氏阴性细菌成为曝气IVCW基质微生物群落的优势种群,群落具有更高的活性和专一性,提高了污染物的去除效果。因此,进一步研究微生物的这种适应机制可以为优化湿地系统提供一定的理论基础。
译  名：
Changes in Microbial Community Structure in Constructed Wetland Under Aeration Condition
作  者：
TAO Min1,2,3,HE Feng1*,XU Hong1,4,ZHOU Qiao-hong1,XU Dong1,ZHANG Li-ping1,WU Zhen-bin1*(1.State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;2.School of Environmental Science and Engineering,Hubei Polytechnic University,Huangshi 435003,China;3.Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation,Hubei Polytechnic University,Huangshi 435003,China;4.China University of Geosciences(Wuhan),Wuhan 430074,China)
关键词：
integrated vertical-flow constructed wetland(IVCW);aeration;microbial community structure;phospholipid fatty acids(PLFAs)
摘  要：
Many previous results have shown that there is an improvement of ammonia removal while oxygen level inside wetland is enhanced.However,it remained unclear whether artificial aeration could improve the purification efficiency of constructed wetland and how the redox environment influence microbial community structure.Thus,changes in microbial community structure and activities in integrated vertical-flow constructed wetland(IVCW)under aeration condition were studied.The results showed that the aerobic microorganisms were the predominant group among the microbial community in surface substrate of non-aerated IVCW,but the most majority of microorganisms were concentrated in the 0～20 cm substrate layer,indicating that purifying efficiency of the system was limited.Artificial aeration enhanced growth of microbial community into depth,as well as significantly increased in microbial biomass and activity.The characteristic monounsaturated fatty acids of aerobic microorganisms were obviously increased,and the surface substrate microbial biomass in down-flow chamber of aerated system was 2 to 6 times of non-aerated system.The unsaturation degree of total phospholipid fatty acids(PLFAs)significantly increased,indicating that microbial activity also enhanced.The gram-negative bacterial became the predominant group among the microbial community,so that it had a higher activity and improved pollutants removal.Therefore,further study of microbial adaptation mechanism can provide a theoretical basis for optimizing constructed wetland system.

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