IOCAS-IR
Vegetation evolution-based hydrological climate history since LGM in southern South China Sea
Yang, Zaibao1,4,5; Li, Tiegang2,3,4; Lei, Yanli1,4,5; Chang, Fengming1,5; Nan, Qingyun1,5
2020-04-01
Source PublicationMARINE MICROPALEONTOLOGY
ISSN0377-8398
Volume156Pages:17
Corresponding AuthorLi, Tiegang(tgli@fio.org.cn) ; Lei, Yanli(leiyanli@qdio.ac.cn)
AbstractThe 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.
KeywordPalynology East Asian Winter Monsoon Heinrich Stadial 1 Hydrological climate Pollen and spores
DOI10.1016/j.marmicro.2020.101837
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000528062400002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167254
Collection中国科学院海洋研究所
Corresponding AuthorLi, Tiegang; Lei, Yanli
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.MNR, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Geol, Qingdao 266061, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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.
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