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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Diversity of abundant bacteria in subsurface vertical flow constructed wetlands
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Diversity of abundant bacteria in subsurface vertical flow constructed wetlands

机译：地下垂直流人工湿地中丰富细菌的多样性

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摘要

Microorganisms are mainly responsible for the transformation and mineralization of degradable organic pollutants within constructed wetlands (CWs). There is still a lack of knowledge concerning microbial community composition within CWs. In order to elucidate the diversity of bacteria inhabiting subsurface vertical flow CWs, the molecular fingerprint technique "terminal restriction fragment length polymorphism" (T-RFLP) derived from total community DNA, was applied.A comparison of the bacterial communities from a full-scale outdoor vertical flow CW with planted and unplanted indoor pilot-scale vertical flow CWs, operated under similar conditions, revealed that both systems are colonized by similar populations showing only little variation in their composition over filter depth. A comparison of bulk soil from an unplanted CW with the rhizosphere soil from the outdoor and indoor CWs showed differences in the bacterial composition, demonstrating the influence of the plants on the rhizosphere community. A comparison of the wastewater before and after the CW passage demonstrated that the bacterial diversity was clearly reduced within the planted outdoor system only.
机译：微生物主要负责人工湿地（CW）中可降解有机污染物的转化和矿化。在化工厂中仍然缺乏有关微生物群落组成的知识。为了阐明居住在地下垂直流连续波中的细菌的多样性，应用了从总群落DNA衍生的分子指纹技术“末端限制性片段长度多态性”（T-RFLP）。全面比较细菌群落在类似条件下运行的带有已种植和未种植的室内中试规模垂直流CW的室外垂直流CW显示，两个系统都被相似的种群所殖民，显示出其组成随过滤深度的变化很小。将未种植的化学废物的散装土壤与室外和室内化学废物的根际土壤进行比较，结果表明细菌组成存在差异，证明了植物对根际群落的影响。连续水通过前后的废水比较表明，仅在种植的室外系统中细菌多样性明显减少。

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