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Mid-Miocene C4 expansion on the Chinese Loess Plateau under an enhancedAsian summer monsoon
Dong,JB(Dong,Jibao)1; Liu,ZH(Liu,Zhonghui)2; An, ZS(An, Zhisheng)1,3; Liu,WG(Liu,Weiguo)1,4; Zhou,WJ(Zhou.Weijian)1,3; Qiang,XK(Qiang, Xiaoke)1; Lu, FY(Lu,Fengyan)1; Dong,Jibao
2018-06-01
发表期刊Journal of Asian Earth Sciences
卷号158期号:2018页码:153-159
文章类型期刊论文
摘要Atmospheric CO2 starvation, aridity, fire and warm season precipitation have all been proposed as major contributors to C4 plant expansion during the Late Miocene. However, the driving factors responsible for the distribution of C4 plants in the early and mid-Miocene still remain enigmatic. Here we report pedogenic carbon and oxygen isotope data (δ13Cpedo, δ18Opedo), along with magnetic susceptibility (MS) results, from the Zhuang Lang drilling core on the Chinese Loess Plateau (CLP). Elevated δ13Cpedo values (>−5‰) signal a prominent C4 expansion and substantially increased δ18Opedo and MS values indicate enhanced Asian summer monsoon (ASM) precipitation. Both of these conditions are observed during the Mid-Miocene Climatic Optimum (MMCO), 14.5–17 million years ago. The marked increase in C4 plants, associated with warm temperatures and increased precipitation, strongly suggests the control of an enhanced ASM on C4 expansion on the CLP during the MMCO. This finding contrasts with the late-Miocene C4 expansion associated with cooling and drying conditions observed in low latitudes and argues for regionally specific control of C4 plant distribution/expansion.
关键词C4 Expansion Pedogenic Carbonate Chinese Loess Plateau Asian Summer Monsoon Mid-miocene Climatic Optimum
DOI10.1016/j.jseaes.2018.02.014
收录类别SCI
所属项目编号41420104008 ; 41290250 ; 41302152 ; QYZDY-SSW-DQC001 ; ZDBS-SSW-DQC001 ; 2013CB955901
语种英语
项目资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy ofSciences ; Chinese Academy ofSciences ; NationalBasic Research Program of China ; NationalBasic Research Program of China
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文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5307
专题加速器质谱中心
通讯作者Dong,Jibao
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth and Environment, CAS, Xi’an, Shaanxi 710061, China
2.Department of Earth Sciences, The University of Hong Kong, Hong Kong
3.Interdisciplinary Research Center of Earth Science Frontier, Beijing Normal University, Beijing 100875, China
4.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China
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Dong,JB,Liu,ZH,An, ZS,et al. Mid-Miocene C4 expansion on the Chinese Loess Plateau under an enhancedAsian summer monsoon[J]. Journal of Asian Earth Sciences,2018,158(2018):153-159.
APA Dong,JB.,Liu,ZH.,An, ZS.,Liu,WG.,Zhou,WJ.,...&Dong,Jibao.(2018).Mid-Miocene C4 expansion on the Chinese Loess Plateau under an enhancedAsian summer monsoon.Journal of Asian Earth Sciences,158(2018),153-159.
MLA Dong,JB,et al."Mid-Miocene C4 expansion on the Chinese Loess Plateau under an enhancedAsian summer monsoon".Journal of Asian Earth Sciences 158.2018(2018):153-159.
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