Two-Stage Climate and Vegetation Change at the East Asian Monsoonal Margin Across the Miocene Climatic Optimum

doi:10.1029/2024PA004894

IVPP-IR

	Two-Stage Climate and Vegetation Change at the East Asian Monsoonal Margin Across the Miocene Climatic Optimum
	Wang, Jian 1,2; Zhou, Xinying2,3 ; Wang, Shiqi2 ; Ye, Jie 2; Liu, Junchi 2; Zheng, Yan 2; Stidham, Thomas A.2,3; Zhao, Keliang2 ; Behling, Hermann 4; Li, Xiaoqiang2,3
	2024-09-01
发表期刊	PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
ISSN	2572-4517
卷号	39 期号:9 页码:19
通讯作者	Zhou, Xinying(zhouxinying@ivpp.ac.cn) ; Li, Xiaoqiang(lixiaoqiang@ivpp.ac.cn)
摘要	The change in vegetation at the margins of the East Asian summer monsoon (EASM) during the Miocene Climatic Optimum (MCO) remains poorly understood. Here, we present a high-resolution terrestrial sequence, paleomagnetically dated to 18.2-13.5 Ma, from the Tongxin Basin of midwestern China. Our multi-indicator analysis, encompassing pollen, delta 13CTOC, delta 18Ocarb-delta 13Ccarb, and magnetic susceptibility, reveals that the regional vegetation and climate had two distinct stages during the MCO, manifesting as stable arid steppe from 17.0 to 16.0 Ma, and woodland steppe with six forested environments from 16.0 to 14.0 Ma. Together with other adjacent records, this supports the EASM as the main control on terrestrial vegetation. Further comparisons of marine-terrestrial data and time series analysis suggest that in the late MCO, the oceanic carbon reservoir (OCR) experienced strong perturbations (mainly Cmax events) accompanied by multiple oscillations. The instability signals likely impacted and were amplified as rapid shifts in forest-steppe environments at the monsoon margins via EASM. Our study highlights the regulation of inland ecologically vulnerable areas by low-latitude forcing in a greenhouse world. Exploring the response of vegetation to the Miocene Climatic Optimum (MCO, similar to 17.0-14.0 Ma) can serve as an analogy for studies of ecological impacts under future global warming. Here, we perform magnetostratigraphic dating and past vegetation-climate reconstruction in high-resolution terrestrial sediments in the Tongxin Basin of Midwest China, a region sensitive to the East Asian summer monsoon (EASM). The records of several indicators, including pollen, delta 13CTOC, delta 18Ocarb-delta 13Ccarb and magnetic susceptibility, indicate that the regional climate and vegetation changed in two major stages across the warm MCO. Between 16.0 and 17.0 Ma, the regional vegetation was predominantly stable arid steppe, followed by at least six rapid oscillations between arid steppe and forest environments between 14.0 and 16.0 Ma. Further analyses show that EASM intensity dominates regional changes in vegetation, and its changing pattern is quasi-similar to global oceanic delta 13C changes reflecting the state of oceanic carbon reservoir (OCR). Multiple rapid shifts in the forest-steppe landscape during the late MCO are closely related to fluctuations in the EASM system, which are modulated by strong oscillations in the OCR. Our study reveals the non-negligible role of the low-latitude marine carbon cycle in forcing inland ecologically vulnerable areas during global climatic warming. The age of the Miocene Tongxin Fauna is constrained to 18.0-14.0 Ma by magnetostratigraphy and biostratigraphy The stability of the regional climate-vegetation system underwent a two-stage evolutionary pattern during the Miocene Climatic Optimum (MCO) Regional vegetation oscillations are likely to respond to ocean carbon reservoir perturbation in the late MCO
关键词	vegetation reconstruction Miocene Climatic Optimum East Asian summer monsoon oceanic carbon reservoir Tongxin Funa
DOI	10.1029/2024PA004894
关键词[WOS]	MIDDLE MIOCENE ; CARBON-ISOTOPE ; SUMMER MONSOON ; TIBETAN PLATEAU ; TECTONIC EVOLUTION ; ORGANIC-MATTER ; NORTH CHINA ; TEMPERATURE ; UPLIFT ; LOESS
收录类别	SCI
语种	英语
资助项目	National Program on key Basic Research Project of China[2022YFF0801502] ; National Program on key Basic Research Project of China[2022YFF0801102] ; National Natural Science Foundation of China[NSFC42303017] ; National Natural Science Foundation of China[41888101] ; Fundamental Research Funds for the Central Universities[E3E40905] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022071]
项目资助者	National Program on key Basic Research Project of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Strategic Priority Research Program of Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
WOS研究方向	Geology ; Oceanography ; Paleontology
WOS类目	Geosciences, Multidisciplinary ; Oceanography ; Paleontology
WOS记录号	WOS:001303068700001
出版者	AMER GEOPHYSICAL UNION
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/23924
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Zhou, Xinying; Li, Xiaoqiang
作者单位	1.Univ Chinese Acad Sci, Dept Archaeol & Anthropol, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.Univ Gottingen, Dept Palynol & Climate Dynam, Gottingen, Germany
推荐引用方式 GB/T 7714	Wang, Jian,Zhou, Xinying,Wang, Shiqi,et al. Two-Stage Climate and Vegetation Change at the East Asian Monsoonal Margin Across the Miocene Climatic Optimum[J]. PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,2024,39(9):19.
APA	Wang, Jian.,Zhou, Xinying.,Wang, Shiqi.,Ye, Jie.,Liu, Junchi.,...&Li, Xiaoqiang.(2024).Two-Stage Climate and Vegetation Change at the East Asian Monsoonal Margin Across the Miocene Climatic Optimum.PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY,39(9),19.
MLA	Wang, Jian,et al."Two-Stage Climate and Vegetation Change at the East Asian Monsoonal Margin Across the Miocene Climatic Optimum".PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY 39.9(2024):19.