干旱区生态环境知识资源中心(Arid): Paleohydrological changes in southeastern China from 13.1 to 2.5 ka based on a multi-proxy peat record

Arid

DOI	10.1016/j.palaeo.2019.109282
	Paleohydrological changes in southeastern China from 13.1 to 2.5 ka based on a multi-proxy peat record
	Wang, Xinxin 1,2,3; Huang, Xianyu 3,4
通讯作者	Huang, Xianyu
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2019
卷号	534
英文摘要	Investigating the hydrological changes in the East Asian monsoon regions of China during the Holocene could provide important insights into the mechanism and future variability of the East Asian summer monsoon (EASM) rainfall. However, existing studies have revealed large inconsistencies in the spatiotemporal pattern of the hydrological changes in East China, probably due to different climatic sensitivities of various proxies, the uncertainties of sedimentary chronologies and unevenness of proxy record distributions. Thus, multi-proxy records with precise dating are needed, especially in southeastern China which is one of the key places to determine the spatiotemporal pattern with few hydrological records available. In this study, hopanoid flux, humification degree, the concentration of total organic carbon (TOC) and the atomic ratio between total organic carbon and total nitrogen (C/N) of organic matter were applied on Shuizhuyang (SZY) peat cores retrieved from south-eastern China to reconstruct the paleohydrological changes spanning from 13.1 to 2.5 ka. Results of these proxies reveal a moderately dry period during 13.1-11.6 ka, followed by an interval of increasing aridity from 11.6 to 8.6 ka. The Holocene optimum (referred here as an effective moisture maximum) occurred at 8.6-4.4 ka before the climate became drier from 4.4 to 2.5 ka. The hydrological changes in SZY during the Holocene with a mid-Holocene Holocene optimum are consistent with the regional climate records in southeastern China. Such an overall arid-wet-arid pattern in Southeast China during the Holocene closely tracked the variations in the west-to-east sea surface temperature (SST) gradient in tropical Pacific. We preliminarily concluded the ENSO state and the western Pacific subtropical high (WPSH) position associated with variations in the thermal state of the tropical Pacific were primarily responsible for the hydrological changes in Southeast China during the Holocene. Our study added new evidence to the spatiotemporal pattern of hydrological changes in eastern China during the Holocene.
英文关键词	East Asian summer monsoon Holocene optimum Hopanoid flux Western Pacific subtropical high ENSO
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000504504200005
WOS关键词	BOG SURFACE WETNESS ; EAST-ASIAN SUMMER ; HOLOCENE OPTIMUM ; CLIMATE-CHANGE ; SOUTHERN CHINA ; GLOBAL MONSOON ; WINTER MONSOON ; RECONSTRUCTION ; POLLEN ; CARBON
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
EI主题词	2019-11-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310881
作者单位	1.Yunnan Univ, Inst Deep Time Terr Ecol, Kunming 650500, Yunnan, Peoples R China; 2.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China; 3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China; 4.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Crit Zone Evolut, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xinxin,Huang, Xianyu. Paleohydrological changes in southeastern China from 13.1 to 2.5 ka based on a multi-proxy peat record[J],2019,534.
APA	Wang, Xinxin,&Huang, Xianyu.(2019).Paleohydrological changes in southeastern China from 13.1 to 2.5 ka based on a multi-proxy peat record.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,534.
MLA	Wang, Xinxin,et al."Paleohydrological changes in southeastern China from 13.1 to 2.5 ka based on a multi-proxy peat record".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 534(2019).