| 不同水温分层水库沉积物间隙水营养盐垂向分布与细菌群落结构的关系 |
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| 引用本文： | 王慎,张思思,许尤,官卓宇,杨正健,刘德富,马骏.不同水温分层水库沉积物间隙水营养盐垂向分布与细菌群落结构的关系[J].环境科学,2019,40(6):2753-2763. |
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| 作者姓名： | 王慎 张思思 许尤 官卓宇 杨正健 刘德富 马骏 |
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| 作者单位： | 湖北工业大学土木建筑与环境学院,河湖生态修复与藻类利用湖北省重点实验室,武汉430068;三峡大学三峡库区生态环境教育部工程研究中心,宜昌,443002;湖北工业大学土木建筑与环境学院,河湖生态修复与藻类利用湖北省重点实验室,武汉430068;三峡大学三峡库区生态环境教育部工程研究中心,宜昌443002 |
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| 基金项目： | 国家自然科学基金项目（51709096，51879099，91647207，51779128）；国家重点研发计划项目（2016YFC0402204） |
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| 摘 要： | 为探究不同水温分层水库沉积物间隙水营养盐垂向分布规律及其与细菌群落结构的关系,运用16S rRNA高通量测序技术,分析了2018年1月澜沧江小湾、漫湾水库建库后沉积物细菌群落结构特征,并采用Cannoco软件对细菌群落与环境因子关系进行了冗余分析.结果表明,调查期间小湾水库水体表底温差3. 3℃,最大温度梯度为0. 2℃·m~(-1)属于分层水体,漫湾表底温差0. 1℃属于混合水体.小湾间隙水NH_4~+-N和NO_3~--N平均质量浓度分别为2. 233 mg·L~(-1)和0. 030 mg·L~(-1),漫湾分别为2. 569 mg·L~(-1)和0. 016 mg·L~(-1).间隙水NH_4~+-N在两个水库沉积物中均表现垂向向下增大的趋势,而NO_3~--N垂向变化则不明显但均在深层质量浓度最底,库区间比较来看,只有NO_3~--N具有极显著性差异,其中小湾明显高于漫湾.菌群分类发现,小湾与漫湾沉积物细菌群落具有相同的优势菌门和优势菌属,水温分层对间隙水营养盐及细菌群落结构无显著影响.而漫湾相比小湾沉积物中反硝化菌相对丰度更高,硝化菌和厌氧氨氧化菌相对丰度更低,同一库区沉积物深层中反硝化菌相对丰度较高,有机物降解菌、硝化菌、厌氧氨氧化菌和溶磷菌相对丰度较低,是造成沉积物营养盐库间差异和垂向差异的原因.
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| 关 键 词： | 澜沧江 分层沉积物 间隙水 营养盐 细菌群落 |
| 收稿时间： | 2018/11/16 0:00:00 |
| 修稿时间： | 2019/1/7 0:00:00 |
Relationship Between the Vertical Distribution of Nutrients and Bacterial Community Structures in Sediment Interstitial Waters of Stratified Reservoirs with Different Water Temperatures |
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| WANG Shen,ZHANG Si-si,XU You,GUAN Zhuo-yu,YANG Zheng-jian,LIU De-fu and MA Jun.Relationship Between the Vertical Distribution of Nutrients and Bacterial Community Structures in Sediment Interstitial Waters of Stratified Reservoirs with Different Water Temperatures[J].Chinese Journal of Environmental Science,2019,40(6):2753-2763. |
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| Authors: | WANG Shen ZHANG Si-si XU You GUAN Zhuo-yu YANG Zheng-jian LIU De-fu and MA Jun |
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| Institution: | Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China,Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China,Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China,Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China,Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002, China,Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China;Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443002, China and Hubei Key Laboratory of Ecological Restoration of River-lakes and Algal Utilization, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China |
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| Abstract: | |
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| Keywords: | Lancang River stratified sediment interstitial water nutrient bacterial community |
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