干旱区生态环境知识资源中心(Arid): Microbial communities and lipid records of the Linxia Basin, NE Tibetan Plateau: Implications for enhanced aridity in the Late Miocene

Arid

DOI	10.1016/j.jseaes.2020.104290
	Microbial communities and lipid records of the Linxia Basin, NE Tibetan Plateau: Implications for enhanced aridity in the Late Miocene
	He, Wei; Wang, Gen; Wang, Yongli; Wei, Zhifu; Huang, Zhiyong; Zhang, Ting; Ma, Xueyun; Ma, He; Yu, Xiaoli
通讯作者	Wang, YL ; Wei, ZF
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2020
卷号	193
英文摘要	The Linxia Basin on the north-eastern Tibetan Plateau in northwest China bears continuous and thick lacustrinefluvial sediments with environmental significance to central Asian aridification. However, limited efforts have been made on investigating the microbial community evolution, even though lipid biomarkers have been successfully employed to reconstruct paleoenvironmental conditions in this area. This study used the ancient DNA and n-alkanes preserved in the lacustrine-fluvial sediments from the Linxia Basin, and employed high throughput sequencing and geochemical analyses to understand the climatic conditions spanning the past 29 million years. The characteristics of n-alkanes indicate that the organic matter was derived from mixed sources (bacteria, algae, and higher plants), and a series of n-alkane proxies (ACL, n-C-21(-)/n-C-22(+), Paq, and Pwax) established that the climate shifted to arid conditions at approximately 8 Ma. It is noteworthy that the relative abundance trends of two classes of microbes (Proteobacteria and Firmicutes) were negatively correlated. Furthermore, the increasing Firmicutes and the relatively decreasing Proteobacteria at approximately 8 Ma also corroborated this arid event. In addition, during this period, there was an extremely low abundance of archaea, which might correspond to severe climatic conditions around 8 Ma. Therefore, this study suggests that the microbial communities could serve as a potential tool for the reconstruction of paleoenvironments.
英文关键词	n-Alkanes Ancient DNA Microbial community Aridification NE Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000528010700003
WOS关键词	DRIVEN CLIMATE-CHANGE ; CENTRAL-ASIA ; 2 EPISODES ; MA ; LAKE ; ALKANES ; UPLIFT ; ARIDIFICATION ; BIOMARKERS ; SEQUENCE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324352
作者单位	[He, Wei; Wang, Gen; Wei, Zhifu; Zhang, Ting; Ma, Xueyun; Yu, Xiaoli] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Peoples R China; [Wang, Yongli; Ma, He] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China; [Wang, Yongli; Ma, He] CAS Ctr Excellence Life & Paleoenvironm, Beijing 100029, Peoples R China; [Huang, Zhiyong] Chinese Acad Sci, Tianjin Inst Ind Biotechnol, Tianjin Key Lab Ind Biol Syst & Bioproc Engn, Tianjin 300308, Peoples R China; [He, Wei; Zhang, Ting; Ma, Xueyun; Ma, He; Yu, Xiaoli] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Wei,Wang, Gen,Wang, Yongli,et al. Microbial communities and lipid records of the Linxia Basin, NE Tibetan Plateau: Implications for enhanced aridity in the Late Miocene[J]. 中国科学院地质与地球物理研究所,2020,193.
APA	He, Wei.,Wang, Gen.,Wang, Yongli.,Wei, Zhifu.,Huang, Zhiyong.,...&Yu, Xiaoli.(2020).Microbial communities and lipid records of the Linxia Basin, NE Tibetan Plateau: Implications for enhanced aridity in the Late Miocene.JOURNAL OF ASIAN EARTH SCIENCES,193.
MLA	He, Wei,et al."Microbial communities and lipid records of the Linxia Basin, NE Tibetan Plateau: Implications for enhanced aridity in the Late Miocene".JOURNAL OF ASIAN EARTH SCIENCES 193(2020).