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

	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
来源期刊	地质学报
ISSN	1000-9515
出版年	2021
卷号	95 期号:2 页码:1000-9515
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
国家	中国
收录类别	CSCD
WOS类目	Geology
CSCD记录号	CSCD:6959276
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364989
作者单位	Ling Yuan, Institute of Geology, Chinese Academy of Geological Sciences;;Southern Marine Science and Engineering Guangdong Laboratory, ;;Southern Marine Science and Engineering Guangdong Laboratory, ;;Guangzhou, Beijing;; 100037;;511458.; Zheng Mianping, Institute of Mineral Resources, Chinese Academy of Geological Sciences, MLR Key Laboratory of Saline Lake Resources and Environments, Beijing 100037, China.; Wang Shuxian, National Research Center of Geoanalysis, Beijing 100037, China.; Sun Qing, National Research Center of Geoanalysis, Beijing 100037, China.; Xie Bingjing, (Beijing)Institute of Earth Sciences, China University of Geosciences, Beijing 100083, China.; Zhang Chengjun, Centre for Arid Environment and Paleoclimate Research, Lanzhou University, Lanzhou, Gansu 730000, 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],2021,95(2):1000-9515.
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.地质学报,95(2),1000-9515.
MLA	Ling Yuan,et al."The Impact of Climatic and Environmental Factors on n-Alkanes Indices in Southwestern Tibetan Plateau".地质学报 95.2(2021):1000-9515.