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标题

内蒙古草地土壤细菌区域分布与局域多度的关系

作者

徐 冰 张全国 朱璧如 张大勇

机构

北京师范大学生物多样性与生态工程教育部重点实验室

摘要

物种间区域分布与局域多度之间的正相关关系是宏生态学的经典模式之一,即局域高密度的物种地理分布范围广,而低密度物种的地理分布范围较狭窄.这种模式在不同的大型生物类群中得到了广泛的证实.但是微生物群落的相关研究还比较薄弱,并且已有工作主要集中在水体环境中.本文以内蒙古草地土壤细菌为研究对象,在3个不同的空间尺度上采集土壤样品,探讨土壤细菌区域分布与局域多度之间的关系.结果表明,在不同的地理尺度上,土壤细菌区域分布与局域多度之间均呈现显著的正相关关系,二者之间的相关性随分类阶元的降低而有所减弱.该结果暗示细菌群落中常见种和稀有种的多样性维持机制可能存在差异,生态位和中性过程可能同时在起作用.

关键词

土壤细菌;区域分布;局域多度;卫星-核心物种假说;焦磷酸测序

引用

徐冰,张全国,朱璧如,张大勇. 内蒙古草地土壤细菌区域分布与局域多度的关系[J]. 北京师范大学学报(自然科学版),2015,04:382-387.

基金

国家自然科学基金资助项目(31030014)

分类号

Q938.1

DOI

10.16360/j.cnki.jbnuns.2015.04.010

Title

Relationship between regional distribution of soil bacteria and local abundance in an Inner Mongolia grassland

Author

XU Bing ZHANG Quanguo ZHU Biru ZHANG Dayong

Affiliations

Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Beijing Normal University

Abstract

Positive interspecific relationship between regional distribution and local abundance is a classic macroecological pattern. Widespread species are likely to occur at high densities whereas species restricted in their distribution tend to be scarce. This pattern has been widely demonstrated in various macroorganisms. However, such studies in microorganisms are still rare, most of which focus on aquatic ecosystems. In the present work a field survey was implemented to analyze the relationship between soil bacteria regional distribution and local abundance on three different geographic scales in Inner Mongolia grassland. Significant positive relationships between soil bacteria regional distribution and local abundance were observed on all geographic scales, and the corresponding relationships became weaker with increased taxonomic resolution for bacteria. These data suggest that abundant and rare soil bacteria may have different mechanisms to maintain biodiversity. Niche and netrual process may play important roles simultaneously.

Key words

soil bacteria; regional distribution; local abundance; the core and satellite species hypothes; pyrosequencing

cite

XU Bing ZHANG Quanguo ZHU Biru ZHANG Dayong . Relationship between regional distribution of soil bacteria and local abundance in an Inner Mongolia grassland[J]. Journal of Beijing Normal University(Natural Science),2015,04:382-387.

DOI

10.16360/j.cnki.jbnuns.2015.04.010

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn