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学科主题: Environmental Sciences
题名: Characteristics of the microbial communities in the integrated vertical-flow constructed wetlands
作者: Zhou Qiaohong1; He Feng1; Zhang Liping1; Wang Yanfen1; Wu Zhenbin1
通讯作者: He, F, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: ammonia-oxidizing bacteria ; constructed wetland ; microbial community ; PLFA
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2009
DOI: 10.1016/S1001-0742(08)62413-4
卷: 21, 期:9, 页:1261-1267
收录类别: SCI
文章类型: Article
部门归属: [Zhou Qiaohong; He Feng; Zhang Liping; Wang Yanfen; Wu Zhenbin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National High Technology Research and Development Program (863) of China [2002AA601021]; National Natural Science Funds for Distinguished Young Scholar in China [39925007]; Key Programs for Science and Technology Development of Hubei Province, China [2006AA305A03]
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Microorganisms play an important role in removing pollutants from constructed wetlands. We investigated the microbial characteristics in a novel integrated vertical-flow constructed wetland (IVCW), which has been in operation in Wuhan, China since 1998. We used phospholipid fatty acid (PLFA) and amoA gene to analyze the structure and diversity of the microbial community within the IVCW. PLFA results suggested that the amount of bacterial PLFA was significantly higher than that of fungal PLFA, but the total microbial biomass represented by PLFA index was low in the system. Microbial spatial distribution showed significantly higher bacterial (both G(+) and G(-)) and fungal biomass in the surface than in the subsurface layers. The ratios of monounsaturated to branched PLFA demonstrated that an anaerobic layer sandwiched by two aerobic layers existed in the IVCW, consistent with the redox potential results. Analysis of the amoA revealed the presence of Nitrosomonas-like sequences in the surface substrate of the downflow chamber and apparent diversities of ammonia-oxidizing bacteria in the system. These results suggest that microorganisms, despite their relatively low biomass, have inhabited the IVCW, and the results will offer some valuable information on microbe to system designers and managers.
英文摘要: Microorganisms play an important role in removing pollutants from constructed wetlands. We investigated the microbial characteristics in a novel integrated vertical-flow constructed wetland (IVCW), which has been in operation in Wuhan, China since 1998. We used phospholipid fatty acid (PLFA) and amoA gene to analyze the structure and diversity of the microbial community within the IVCW. PLFA results suggested that the amount of bacterial PLFA was significantly higher than that of fungal PLFA, but the total microbial biomass represented by PLFA index was low in the system. Microbial spatial distribution showed significantly higher bacterial (both G(+) and G(-)) and fungal biomass in the surface than in the subsurface layers. The ratios of monounsaturated to branched PLFA demonstrated that an anaerobic layer sandwiched by two aerobic layers existed in the IVCW, consistent with the redox potential results. Analysis of the amoA revealed the presence of Nitrosomonas-like sequences in the surface substrate of the downflow chamber and apparent diversities of ammonia-oxidizing bacteria in the system. These results suggest that microorganisms, despite their relatively low biomass, have inhabited the IVCW, and the results will offer some valuable information on microbe to system designers and managers.
关键词[WOS]: AMMONIA-OXIDIZING BACTERIA ; WASTE-WATER TREATMENT ; CONTAMINATED SOIL ; REMOVAL ; DEGRADATION ; DIVERSITY ; SEDIMENTS ; BIOMASS ; FOREST ; SHIFTS
语种: 英语
WOS记录号: WOS:000269849000015
ISSN号: 1001-0742
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7582
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China

Recommended Citation:
Zhou Qiaohong; He Feng; Zhang Liping; Wang Yanfen; Wu Zhenbin.Characteristics of the microbial communities in the integrated vertical-flow constructed wetlands,JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2009,21(9):1261-1267
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