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Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning
Zhou,B(Zhou,Bin)[1,2]; Shen,CD(Shen,Chengde)[2]; Sun,WD(Sun,Weidong)[3]; Bird,M(Bird,Michael)[4]; Ma,WT(Ma,Wentao)[5]; Taylor,D(Taylor,David)[6]; Liu,WG(Liu,Weiguo)[7]; Peterse,F(Peterse,Francien)[8]; Yi,WX(Yi,Weixi)[2]; Zheng,HB(Zheng,Hongbo)[9]
Source PublicationGeological Society of America

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-specifc studies. Here variations in pyrogenic carbon mass accumulation rate (PyC-MAR) and isotope composition (d13CPyC) 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 C 4 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 d13CPyC at ca. 0.15 Ma appears to indicate a decoupling of feedbacks between changes in climate, fre 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 fres.

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Document Type期刊论文
Corresponding AuthorZhou,B(Zhou,Bin)[1,2]; Shen,CD(Shen,Chengde)[2]
Affiliation1.Key Laboratory of Surfcial Geochemistry (Ministry of Education), School of Earth Sciences and Engineering, Nanjing University,Nanjing 210046, China;
2.State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640, China;
3.CAS Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,511 Kehua Street, Wushan, Guangzhou 510640, China;
4.School of Earth and Environmental Sciences, James Cook University, Cairns, Queensland 4870, Australia;
5.State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;
6.Department of Geography, National University of Singapore, 117570 Singapore;
7.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an 710075, China;
8.Department of Earth Sciences, Utrecht University, 3584 CD Utrecht, Netherlands;
9.School of Geography Science, Nanjing Normal University, Nanjing 210023, China
Recommended Citation
GB/T 7714
Zhou,B(Zhou,Bin)[1,2],Shen,CD(Shen,Chengde)[2],Sun,WD(Sun,Weidong)[3],等. Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning[J]. Geological Society of America,2014,42(12):1067-1070.
APA Zhou,B.,Shen,CD.,Sun,WD.,Bird,M.,Ma,WT.,...&Zheng,HB.(2014).Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning.Geological Society of America,42(12),1067-1070.
MLA Zhou,B,et al."Late Pliocene–Pleistocene expansion of C4 vegetation in semiarid East Asia linked to increased burning".Geological Society of America 42.12(2014):1067-1070.
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