Vegetation evolution-based hydrological climate history since LGM in southern South China Sea

doi:10.1016/j.marmicro.2020.101837

CORC > 海洋研究所 > 中国科学院海洋研究所

	Vegetation evolution-based hydrological climate history since LGM in southern South China Sea
	Yang, Zaibao 1,2,5; Li, Tiegang 2,3,4; Lei, Yanli 1,2,5; Chang, Fengming 1,5; Nan, Qingyun 1,5
刊名	MARINE MICROPALEONTOLOGY
	2020-04-01
卷号	156 页码:17
关键词	Palynology East Asian Winter Monsoon Heinrich Stadial 1 Hydrological climate Pollen and spores
ISSN号	0377-8398
DOI	10.1016/j.marmicro.2020.101837
通讯作者	Li, Tiegang(tgli@fio.org.cn) ; Lei, Yanli(leiyanli@qdio.ac.cn)
英文摘要	The reconstruction of vegetation evolution and climate changes at low latitudes since the Last Glacial Maximum (LGM) remains incomplete. In this study, we reconstructed the palynological history of vegetation changes since the LGM using a sediment core collected from the slope in the southern South China Sea (SCS). The chronology of the core was based on eight AMS(14)C dates, and 85 stratigraphic samples were palynologically analyzed. Our results denote that the vegetation reconstructed during the LGM in the southern SCS was characterized by a relatively high percentage of herb pollen and a modest decrease in the number of fern spores, suggesting a temperature decline and humidity change in this region. Further, the preservation of a rich diversity of pollen from the tropical lowland rainforest indicated that the rainforests might have covered large areas of the exposed Sunda Shelf during the LGM. The dynamic concentration of the Pinus pollen in the core, which is a proxy for the East Asian winter monsoon (EAWM), satisfactorily matched the changes in the Atlantic meridional overturning circulation and Australian-Indonesian summer monsoon, especially during the Heinrich Stadial 1. This suggests that the climate at the high latitudes of the Northern Hemisphere can drive the Intertropical Convergence Zone (ITCZ) southwards based on the enhanced EAWM. The southward-shifting ITCZ may change the hydrological climate of the equator and the Southern Hemisphere. The pteridophyte spores, which are good regional precipitation indicators, were positively correlated with the warm pool convection and inversely related with the EAWM, possibly indicating the considerable impact of the high-latitude climate in the Northern Hemisphere on precipitation in the tropical regions. Our results indicate that during the last deglaciation, the tropical hydrological changes were relatively moderate when compared with the drastic change observed at high latitudes and were attributed to the regulation of the El Nino-Southern Oscillation-like state. Our sequence of pollen and spores from the southern SCS can be used to observe the detailed dynamics of climatic evolution in tropical regions. The results of this study are essential to understand the complicated climate processes and the relation between high and low latitudes.
资助项目	National Key Research and Development Program: Post-cruise Scientific Research of International Ocean Drilling Expeditions to the South China Sea[2018YFE0202401] ; National Science Foundation of China[41830539] ; National Science Foundation of China[41630965] ; National Science Foundation of China[41576054] ; National Special Project for 'Global Change and Air-Sea Interaction'[GASI-GEOGE04] ; Continental Shelf Drilling Program of China[GZH201100202] ; Senior User Project of RV KEXUE[KEXUE2018G27] ; Taishan Scholars Project Funding
WOS研究方向	Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000528062400002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/167253]
专题	中国科学院海洋研究所
通讯作者	Li, Tiegang; Lei, Yanli
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266061, Peoples R China 4.MNR, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Yang, Zaibao,Li, Tiegang,Lei, Yanli,et al. Vegetation evolution-based hydrological climate history since LGM in southern South China Sea[J]. MARINE MICROPALEONTOLOGY,2020,156:17.
APA	Yang, Zaibao,Li, Tiegang,Lei, Yanli,Chang, Fengming,&Nan, Qingyun.(2020).Vegetation evolution-based hydrological climate history since LGM in southern South China Sea.MARINE MICROPALEONTOLOGY,156,17.
MLA	Yang, Zaibao,et al."Vegetation evolution-based hydrological climate history since LGM in southern South China Sea".MARINE MICROPALEONTOLOGY 156(2020):17.