Effects of microclimate on soil bacterial communities across two contrasting timberline ecotones in southeast Tibet

doi:10.1111/ejss.12292

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	Effects of microclimate on soil bacterial communities across two contrasting timberline ecotones in southeast Tibet
	Yuan, Y. L.1; Si, G. C.1,2; Wang, J.1,3; Han, C. H.1,3; Zhang, G. X.1
刊名	EUROPEAN JOURNAL OF SOIL SCIENCE
	2015-11-01
卷号	66 期号:6 页码:1033-1043
DOI	10.1111/ejss.12292
文献子类	Article
英文摘要	The Sergyemla Mountains have unique timberline patterns. Abies georgei var. smithii (Viguie & Gaussen) and Juniperus saltuaria (Rehder & E. H. Wilson) dominate the north-facing and south-facing slopes of a U-shaped valley, respectively. Although these two timberlines represent the world's highest natural tree lines, little is known about the structure of their soil bacterial communities and the factors that control them. To characterize and compare the soil bacterial communities of two timberline ecotones with different spatial orientations, we investigated their structures by terminal restriction fragment length polymorphism analysis and sequencing methods. We found that the structures of the soil bacterial communities differed significantly between the two opposite slopes, and the difference between the bacterial communities correlated primarily with soil carbon:nitrogen ratios. This probably relates to differences in the microclimate (mean soil temperature) between the two aspects in the world's highest timberline ecotones. In addition, the structures of soil bacterial communities also differed significantly with soil depth, and total nitrogen content had the greatest effect on the bacterial communities. In this region, soil temperature rather than mean annual precipitation has a major effect on the structures of soil bacterial communities. Microclimate differences (mainly differences in soil temperature) between the two opposite slopes might indicate that an amplitude increase of 2 degrees C in soil temperature could change the structures of soil bacterial communities by changing the status of soil carbon and nitrogen in these timberline ecotones.
WOS关键词	SERGYEMLA MOUNTAINS ; CLIMATE-CHANGE ; GLOBAL CHANGE ; DIVERSITY ; DEPTH ; TEMPERATURE ; PREDICTORS ; LANDSCAPE ; RESPONSES ; ARCHAEAL
WOS研究方向	Agriculture
语种	英语
WOS记录号	WOS:000364312500008
资助机构	973 Project from Science & Technology Department of China(2013CB956002) ; 973 Project from Science & Technology Department of China(2013CB956002) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-EW-112) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-EW-112) ; Natural Science Foundation of China(41471055) ; Natural Science Foundation of China(41471055) ; 973 Project from Science & Technology Department of China(2013CB956002) ; 973 Project from Science & Technology Department of China(2013CB956002) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-EW-112) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-EW-112) ; Natural Science Foundation of China(41471055) ; Natural Science Foundation of China(41471055)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62172]
专题	地质与地球物理研究所_兰州油气中心
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Y. L.,Si, G. C.,Wang, J.,et al. Effects of microclimate on soil bacterial communities across two contrasting timberline ecotones in southeast Tibet[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2015,66(6):1033-1043.
APA	Yuan, Y. L.,Si, G. C.,Wang, J.,Han, C. H.,&Zhang, G. X..(2015).Effects of microclimate on soil bacterial communities across two contrasting timberline ecotones in southeast Tibet.EUROPEAN JOURNAL OF SOIL SCIENCE,66(6),1033-1043.
MLA	Yuan, Y. L.,et al."Effects of microclimate on soil bacterial communities across two contrasting timberline ecotones in southeast Tibet".EUROPEAN JOURNAL OF SOIL SCIENCE 66.6(2015):1033-1043.