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Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning

2014; Geological Society of America; Volume: 42; Issue: 12 Linguagem: Inglês

10.1130/g36110.1

1943-2682

Bin Zhou, Chengde Shen, Weidong Sun, Michael I. Bird, Wentao Ma, David Taylor, Weiguo Liu, Francien Peterse, Weixi Yi, Hongbo Zheng,

Paleontology and Stratigraphy of Fossils

Research Article| December 01, 2014 Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning Bin Zhou; Bin Zhou * 1Key Laboratory of Surficial Geochemistry (Ministry of Education), School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China2State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China *E-mails: zhoubinok@nju.edu.cn; cdshen@gig.ac.cn. Search for other works by this author on: GSW Google Scholar Chengde Shen; Chengde Shen * 2State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China *E-mails: zhoubinok@nju.edu.cn; cdshen@gig.ac.cn. Search for other works by this author on: GSW Google Scholar Weidong Sun; Weidong Sun 3CAS Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 511 Kehua Street, Wushan, Guangzhou 510640, China Search for other works by this author on: GSW Google Scholar Michael Bird; Michael Bird 4School of Earth and Environmental Sciences, James Cook University, Cairns, Queensland 4870, Australia Search for other works by this author on: GSW Google Scholar Wentao Ma; Wentao Ma 5State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China Search for other works by this author on: GSW Google Scholar David Taylor; David Taylor 6Department of Geography, National University of Singapore, 117570 Singapore Search for other works by this author on: GSW Google Scholar Weiguo Liu; Weiguo Liu 7State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China Search for other works by this author on: GSW Google Scholar Francien Peterse; Francien Peterse 8Department of Earth Sciences, Utrecht University, 3584 CD Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Weixi Yi; Weixi Yi 2State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Search for other works by this author on: GSW Google Scholar Hongbo Zheng Hongbo Zheng 9School of Geography Science, Nanjing Normal University, Nanjing 210023, China Search for other works by this author on: GSW Google Scholar Geology (2014) 42 (12): 1067–1070. https://doi.org/10.1130/G36110.1 Article history received: 22 Jul 2014 rev-recd: 17 Sep 2014 accepted: 17 Sep 2014 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Bin Zhou, Chengde Shen, Weidong Sun, Michael Bird, Wentao Ma, David Taylor, Weiguo Liu, Francien Peterse, Weixi Yi, Hongbo Zheng; Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning. Geology 2014;; 42 (12): 1067–1070. doi: https://doi.org/10.1130/G36110.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Plants using the C4 photosynthetic pathway, commonly tropical and subtropical grasses, increased in abundance in East Asia during the late Cenozoic. Determining the exact timing and likely factors leading to this major vegetation change requires region-specific studies. Here variations in pyrogenic carbon mass accumulation rate (PyC-MAR) and isotope composition (δ13CPyC) from an ∼7-m.y.-long depositional sequence from the central Loess Plateau, China, suggest increased biomass burning and an increased contribution to combusted material from C4 taxa from 2.6 Ma. Changes in the composition of PyC after 0.6 Ma likely reflect the effects of lower temperatures, particularly during glacial periods, and changes in seasonality of precipitation. Increased PyC-MAR without concomitant changes in δ13CPyC at ca. 0.15 Ma appears to indicate a decoupling of feedbacks between changes in climate, fire regime, and vegetation, and may mark the onset of anthropogenic burning in the region. These new data suggest that C4 taxa were present on the Loess Plateau from at least the late Miocene, rising to prominence at ca. 2.6 Ma following changes in climate and, critically, an increase in biomass fires. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.