干旱区生态环境知识资源中心(Arid): The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau

Arid

DOI	10.1111/1755-6724.14376
	The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau
	Ling, Yuan; Zheng, Mianping; Wang, Shuxian; Sun, Qing; Xie, Bingjing; Zhang, Chengjun
通讯作者	Wang, SX (corresponding author), Natl Res Ctr Geoanal, Beijing 100037, Peoples R China.
来源期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN	1000-9515
EISSN	1755-6724
出版年	2021
卷号	95 期号:2 页码:648-658
英文摘要	n-Alkanes are widely used in paleoenvironmental reconstructions. However, our understanding of changes in the distribution of n-alkanes with climatic and environmental factors remains unclear in arid/semi-arid regions. We sampled 26 surface sediments from three climatic zones across the southwestern Tibetan Plateau to evaluate the sensitivity of chain length distributions of n-alkanes to climatic and environmental parameters. Our observations demonstrate that average chain length (ACL), proportion of aquatic macrophyte (Paq), carbon preference index (CPI) and ratio of the contents of nC(27) and nC(31) (nC(27)/nC(31)) are all sensitive to hydroclimatic conditions. In contrast to commonly-adopted assumptions, the correlations between these indices and hydrological parameters are not always good, which indicates that the interpretation of n-alkane indices is special on the southwestern Tibetan Plateau. These might be related to the vegetation characteristics and seasonality of biological activity, and need to be considered in paleoclimatic reconstruction. The impact of seasonal precipitation on n-alkanes indices was also evaluated.
英文关键词	n-alkanes average chain length climate environment Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000653317300023
WOS关键词	MOLECULAR-DISTRIBUTIONS ; VALUES ; PALEOVEGETATION ; PALEOCLIMATE ; INDICATORS ; ABUNDANCE ; SEDIMENT ; GRADIENT ; RATIOS ; PROXY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349257
作者单位	[Ling, Yuan] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China; [Ling, Yuan] Southern Marine Sci & Engn Guangdong Lab, Guangzhou 511458, Peoples R China; [Zheng, Mianping] Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Saline Lake Resources & Environm, Beijing 100037, Peoples R China; [Wang, Shuxian; Sun, Qing] Natl Res Ctr Geoanal, Beijing 100037, Peoples R China; [Xie, Bingjing] China Univ Geosci, Inst Earth Sci, Beijing 100083, Peoples R China; [Zhang, Chengjun] Lanzhou Univ, Ctr Arid Environm & Paleoclimate Res, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Ling, Yuan,Zheng, Mianping,Wang, Shuxian,et al. The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau[J]. 兰州大学,2021,95(2):648-658.
APA	Ling, Yuan,Zheng, Mianping,Wang, Shuxian,Sun, Qing,Xie, Bingjing,&Zhang, Chengjun.(2021).The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau.ACTA GEOLOGICA SINICA-ENGLISH EDITION,95(2),648-658.
MLA	Ling, Yuan,et al."The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau".ACTA GEOLOGICA SINICA-ENGLISH EDITION 95.2(2021):648-658.