DOI: 10.1016/j.palaeo.2013.08.012
论文题名: Stable carbon isotopic composition of black carbon in surface soil as a proxy for reconstructing vegetation on the Chinese Loess Plateau
作者: Liu L. ; Song Y. ; Cui L. ; Hao Z.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 388 起始页码: 109
结束页码: 114
语种: 英语
英文关键词: Black carbon
; Chinese Loess Plateau
; Organic carbon
; Plants
; Stable carbon isotope
英文摘要: Black carbon (BC) is a continuum of carbon produced by incomplete combustion. Whether its stable carbon isotopic composition (expressed as δ13CBC values) can be used directly for paleovegetation reconstruction is still in debate. In the present study, we investigated surface soil from the Chinese Loess Plateau and collected samples from the following three transects: the Ruicheng-Jingbian, Lantian-Huanxian, and Qin'an-Dingxi, from east to west. The δ13CBC values for surface soil ranged from -27.9‰ to -21.9‰; the stable carbon isotopic composition of soil organic carbon (expressed as δ13CSOC values) ranged from -26.8‰ to -20.9‰. A strong positive correlation was observed between δ13s{cyrillic}BC and δ13CSOC (R=0.88, P=0.000<0.01); the difference between the δ13s{cyrillic}BC and δ13CSOC (δ13s{cyrillic}SOC-BC) values ranged from -1.5‰ to +1.3‰, with an average of +0.2‰. The characteristics of vegetation on the Chinese Loess Plateau and its variation, indicated by δ13s{cyrillic}BC and δ13CSOC values, were consistent with those of modern plants. It suggests that δ13s{cyrillic}BC values for surface soil are controlled mainly by surface plants, and that therefore δ13s{cyrillic}BC can indicate the vegetation effectively, within a precision range of ±1.5‰. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69610
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Mineral Resources Chinese Academy of Geological Sciences, Beijing 100037, China; Chinese Academy of Geological Sciences, Beijing 100037, China; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
Recommended Citation:
Liu L.,Song Y.,Cui L.,et al. Stable carbon isotopic composition of black carbon in surface soil as a proxy for reconstructing vegetation on the Chinese Loess Plateau[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,388