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Stepwise expansions of C-4 biomass and enhanced seasonal precipitation and regional aridity during the Quaternary on the southern Chinese Loess Plateau
Sun, JM (Sun, Jimin)[1]; Lu, TY (Lu, Tongyan)[1]; Zhang, ZQ (Zhang, Zhenqing)[2]; Wang, X (Wang, Xu)[1]; Liu, WG (Liu, Weiguo)[3]
2012-02-21
Source PublicationQUATERNARY SCIENCE REVIEWS
Volume34Pages:57-65
Subtype期刊论文
Abstract

The expansion of C-4 plants is one of the most prominent vegetation changes in the global ecosystem during the Cenozoic Era. Although C-4 plant expansions in the latest Miocene have been widely reported, factors driving the expansions are still in debate, and the details of vegetation changes during the Quaternary have not been well studied. Here we present high-resolution carbon isotope time series of both organic matter and bulk carbonates, covering the past 2.58 Ma, derived from the loess-soil successions on the southern Chinese Loess Plateau. The organic matter delta C-13 values indicate stepwise C-4 plant expansions initiated at similar to 1.6 and at similar to 0.43 Ma, respectively. We conclude that such tectonic time scale C-4 plant expansions are controlled by enhanced seasonality of precipitation (relatively more precipitation in the warm growing season) as well as regional aridity, and this long-term fluctuation superimposes on the orbital scale variations of C-4 plants, while the latter appears phase-locked with cyclical changes of summer monsoon circulations.

KeywordOrganic Matter Carbon Isotope Carbonate Isotope Aeolian Deposits Quaternary Paleovegetation
DOI10.1016/j.quascirev.2011.12.007
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10194
Collection加速器质谱中心
Corresponding AuthorSun, JM (Sun, Jimin)[1]
Affiliation1.Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, P. O. Box 9825, Beijing 100029, China;
2.Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
3.Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China
Recommended Citation
GB/T 7714
Sun, JM ,Lu, TY ,Zhang, ZQ ,et al. Stepwise expansions of C-4 biomass and enhanced seasonal precipitation and regional aridity during the Quaternary on the southern Chinese Loess Plateau[J]. QUATERNARY SCIENCE REVIEWS,2012,34:57-65.
APA Sun, JM ,Lu, TY ,Zhang, ZQ ,Wang, X ,&Liu, WG .(2012).Stepwise expansions of C-4 biomass and enhanced seasonal precipitation and regional aridity during the Quaternary on the southern Chinese Loess Plateau.QUATERNARY SCIENCE REVIEWS,34,57-65.
MLA Sun, JM ,et al."Stepwise expansions of C-4 biomass and enhanced seasonal precipitation and regional aridity during the Quaternary on the southern Chinese Loess Plateau".QUATERNARY SCIENCE REVIEWS 34(2012):57-65.
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