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Normal Alkane Distributions in Soil Samples along a Lhasa-Bharatpur Transect

文献类型：期刊论文

作者Jia Qiuhuan1,2; Sun Qing2; Xie Manman2; Shan Yabing2; Ling Yuan2; Zhu Qingzeng3; Tian Mingzhong1
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期2016-04-01
卷号90期号:2页码:738-748
关键词Temperature N-alkanes Surface Soil Lhasa-bharatpur Transect
DOI10.1111/1755-6724.12701
文献子类Article
英文摘要We present n-alkane distributions in the soil samples along a transect from Lhasa on the Tibetan Plateau to Bharatpur in Nepal, which covers a large geographical area and a wide range of climatic conditions. These data allow us to assess the significance of n-alkane distributions in different vegetation types and their relationships to temperature and precipitation. In the tropical rainforest and broadleaved forest zones, n-alkanes exhibit a bimodal distribution pattern with dominant homologues around n-C-31 and n-C-23. The bimodal distribution of tropical rainforest n-alkanes may be a general pattern because of the presence of many lianas, epiphytic plants, algae and the strong microbial activity and degradation involved in the postdepositional process. In the warm-temperate mixed forest and needle-leaved forest zones, the long-chain alkanes have a pattern of n-C-31 > n-C-33 >> n-C-27. In the alpine shrub and grassland zone, although the most abundant homologue is n-C-31, relatively high n-C-23 concentrations have also been observed in some samples. The statistical results show a good correlation between n-alkane proxies and climatic factors. The average chain length (ACL) values are positively correlated with precipitation and temperature across the transect. The carbon preference index (CPI) values show a negative correlation with temperature and precipitation along a Lhasa-Bharatpur transect. Although there is a positive relationship between ACL and temperature, it is difficult to separate the two climatic variables (temperature and precipitation) because they are well coupled in the monsoon region.
WOS关键词CHINESE LOESS PLATEAU ; PLANT CUTICULAR WAXES ; BULK ORGANIC-MATTER ; CHAIN N-ALKANES ; DELTA-D VALUES ; LEAF WAXES ; CHEMOTAXONOMIC SIGNIFICANCE ; ENVIRONMENTAL-CHANGES ; LACUSTRINE SEDIMENTS ; TERRESTRIAL PLANTS
WOS研究方向Geology
语种英语
WOS记录号WOS:000374705600022
资助机构National Natural Science Foundation of China(41302141 ; National Natural Science Foundation of China(41302141 ; Geological Research Program of China Geological Survey(12120113015400) ; Geological Research Program of China Geological Survey(12120113015400) ; 41272198) ; 41272198) ; National Natural Science Foundation of China(41302141 ; National Natural Science Foundation of China(41302141 ; Geological Research Program of China Geological Survey(12120113015400) ; Geological Research Program of China Geological Survey(12120113015400) ; 41272198) ; 41272198)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53508]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
作者单位1.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
2.Natl Res Ctr Geoanal, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Jia Qiuhuan,Sun Qing,Xie Manman,et al. Normal Alkane Distributions in Soil Samples along a Lhasa-Bharatpur Transect[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2016,90(2):738-748.
APA Jia Qiuhuan.,Sun Qing.,Xie Manman.,Shan Yabing.,Ling Yuan.,...&Tian Mingzhong.(2016).Normal Alkane Distributions in Soil Samples along a Lhasa-Bharatpur Transect.ACTA GEOLOGICA SINICA-ENGLISH EDITION,90(2),738-748.
MLA Jia Qiuhuan,et al."Normal Alkane Distributions in Soil Samples along a Lhasa-Bharatpur Transect".ACTA GEOLOGICA SINICA-ENGLISH EDITION 90.2(2016):738-748.

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来源：地质与地球物理研究所

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