| 辽河四平段流域河流沉积物微生物群落多样性和结构分析 |
| 摘要点击 2150 全文点击 516 投稿时间：2021-07-05 修订日期：2021-09-29 |
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| 中文关键词 沉积物 微生物群落 多样性 群落结构组成 环境因子 |
| 英文关键词 sediment microbial community diversity community structure composition environmental factors |
| 作者 | 单位 | E-mail | | 李鹏洋 | 吉林大学新能源与环境学院, 长春 130012
吉林大学地下水资源与环境教育部重点实验室, 长春 130012 | 1462762523@qq.com | | 安启睿 | 吉林大学新能源与环境学院, 长春 130012
吉林大学地下水资源与环境教育部重点实验室, 长春 130012 | | | 王新皓 | 吉林大学新能源与环境学院, 长春 130012 | | | 孙思宇 | 吉林大学新能源与环境学院, 长春 130012
吉林大学地下水资源与环境教育部重点实验室, 长春 130012 | | | 李肖乾 | 吉林大学新能源与环境学院, 长春 130012
吉林大学地下水资源与环境教育部重点实验室, 长春 130012 | | | 郑娜 | 吉林大学地下水资源与环境教育部重点实验室, 长春 130012 | zhengnalzz@jlu.edu.cn |
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| 中文摘要 |
| 沉积物微生物群落在水生态系统的物质循环中发挥着关键的作用，群落结构组成的变化经常与环境的改变有关.以辽河四平段流域为研究区域，运用高通量测序结果对沉积物微生物群落的结构组成和多样性进行分析.结果表明，辽河四平段流域河流沉积物微生物群落α多样性以北河支流最高，干流次之，南河支流最低；β多样性表现为干流、北河支流和南河支流的微生物群落的相似性较低，差异性较大.变形菌门是该流域微生物群落门水平上丰度最高的优势菌门，并且与其他东北地区的河流类似，该流域河流沉积物中的厚壁菌门含量较低；γ-变形菌纲是该流域河流沉积物微生物群落占比最高的菌纲，但是β-变形菌纲在该流域丰度很低；而属于β-变形菌纲Ellin 6067菌属在该流域分布很广.环境因子例如沉积物重金属和水体理化性质也会对微生物群落的多样性和种群结构产生多种影响.结果为实现修复辽河四平段流域河流的水体污染工作提供了理论依据. |
| 英文摘要 |
| Sediment microbial communities play a key role in the material cycle of aquatic ecosystems, and changes in community structure are often related to environmental change. In this study, the Siping basin of the Liaohe River was used as the research area, and high-throughput sequencing results were used to analyze the structure and diversity of sediment microbial communities. The results showed that the α-diversity of the river sediment microbial communities in the Siping section of the Liaohe River was the highest in the tributaries of the north river, followed by that in the main stream, and the tributaries of the south river had the lowest. The β-diversity showed that the microbial communities of the main stream, the tributaries of the north river, and the tributaries of the south river had lesser similarities and greater differences. Proteobacteria were the dominant phyla with the highest abundance at the level of the microbial community in this basin. However, the content of Firmicutes in river sediments in this basin was low, which is similar to that in other rivers in Northeast China. γ-Proteobacteria was the class of bacteria that occupied the highest proportion of the sediment microbial communities, but the abundance of β-Proteobacteria in this watershed was very low. However, the genus Ellin6067belonging to β-Proteobacteria was widely distributed in this watershed. Environmental factors, such as heavy metals in sediments and physical and chemical properties of water, can also have a variety of effects on the diversity and population structure of microbial communities. The results of this research provide a theoretical basis for the restoration of water pollution in the rivers of the Siping section of the Liaohe River. |
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