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冰川冻土 ›› 2019, Vol. 41 ›› Issue (1): 197-214.doi: 10.7522/j.issn.1000-0240.2019.0010

• 寒旱区水文水资源 • 上一篇    

西风和季风影响区冰川雪中细菌数量和群落组成与气候环境关系

刘晓波1,2, 邢婷婷2,5, 刘勇勤3,4,5, 徐柏青3,4,5, 赵华标3,4, 王宁练6, 沈亮4,5   

  1. 1. 中国科学院 加德满都科教中心, 尼泊尔 加德满都 44618;
    2. 中国科学院 青藏高原研究所 高寒生态学与生物多样性重点实验室, 北京 100101;
    3. 中国科学院 青藏高原地球科学卓越中心, 北京 100101;
    4. 中国科学院 青藏高原研究所 青藏高原环境变化与地表过程重点实验室, 北京 100101;
    5. 中国科学院大学, 北京 100049;
    6. 西北大学 城市与环境学院, 陕西 西安 710069
  • 收稿日期:2018-05-06 修回日期:2018-11-16 发布日期:2019-03-16
  • 通讯作者: 刘勇勤。E-mail:yqliu@itpcas.ac.cn E-mail:yqliu@itpcas.ac.cn
  • 作者简介:刘晓波(1981-),山东招远人,助理研究员,2010年在中国科学院青藏高原研究所获博士学位,从事青藏高原冰川微生物及气候研究.E-mail:xbliu@itpcas.ac.cn
  • 基金资助:
    国家自然科学基金项目(41425004;41371084;41190084;41571076;41371089;41201059)资助

Bacterial abundance and community composition of glacier snow in Western and Monsoon areas and their relations to climate environment

LIU Xiaobo1,2, XING Tingting2,5, LIU Yongqin3,4,5, XU Baiqing3,4,5, ZHAO Huabiao3,4, WANG Ninglian6, SHEN Liang4,5   

  1. 1. Kathmandu Center for Research and Education, CAS-TU, Kathmandu 44618, Nepal;
    2. Key Laboratory of Alphine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
    3. Center for Excellence in Tibetan Plateau Earth Science of Chinese Academy of Sciences, Beijing 100101, China;
    4. Key Laboratory of Tibetan Environment Changes and Land Surface Process, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;
    5. University of Chinese Academy of Sciences, Beijing 100049, China;
    6. College of Urban and Environmental Science, Northwest University, Xi'an 710069, China
  • Received:2018-05-06 Revised:2018-11-16 Published:2019-03-16

摘要: 青藏高原冰川是全球变化研究的热点地区,但对高原冰雪细菌与气候环境之间的关系还缺乏研究。选取西风影响下的新疆慕士塔格冰川、木吉冰川和印度季风影响下的尼泊尔雅拉冰川进行冰雪细菌研究,以揭示西风和季风影响区冰川雪中细菌丰度和群落组成特征以及细菌与区域气候环境的关系。研究发现:受西风影响的慕士塔格冰川和木吉冰川的主要细菌类群为Bacteroidetes和Betaproteobacteria;受印度季风影响的雅拉冰川的细菌优势类群为Betaproteobacteria和Cyanobacteria。表明西风和季风影响区冰川雪中细菌具有不同的群落组成。此外,通过比对16S rRNA,发现三个冰川分离的细菌与分离自海洋、湖泊、土壤、沙漠等寒冷环境的细菌具有很高的相似度。位于西风带的慕士塔格和木吉冰川雪中细菌Shannon指数高于位于印度季风区的雅拉冰川。印度季风带的雅拉冰川细菌群落组成受季节的影响明显而西风带的慕士塔格冰川则受季节影响比较小。

关键词: 青藏高原, 冰川, 细菌, 群落, 多样性, 气候环境

Abstract: The environmental changes of the Qinghai-Tibet Plateau possess sensitive response to global changes. However, there is still a lack intensive study about the relationship between microorganisms and environment changes. In the present study, researches have been conducted in the Muztagh Ata Glacier, Muji Glacier and Yala Glacier to investigate snow bacteria and their relationships with local climatic environmental conditions. The results demonstrated that bacterial community of the Muztagh Ata Glacier and Muji Glacier in westerly area were dominated by Bacteroidetes and Betaproteobacteria; Cyanobacteria and Betaproteobacteria were the dominant groups in the Yala Glacier, which is affected by the Indian monsoon. It is also found that bacteria of the three glaciers have shared high 16S rRNA, similar to that from ocean, lakes, soil, plant, desert and other cold environment. These results also indicated that glaciers in westerly and Indian monsoon areas have different bacterial clades. Furthermore, it was found that bacterial diversity was affected by the climatic zone. Shannon's diversity index was higher in Muji Glacier and Muztagh Ata Glacier than that in Yala glacier. Besides, Yala Glacier bacterial community varied significantly with season, while that in Muztagh Ata Glacier was not so significant.

Key words: Qinghai-Tibet Plateau, glacier, bacteria, community, diversity, climatic environment

中图分类号: 

  • Q938.1+1