干旱区生态环境知识资源中心(Arid): Holocene hydroclimate in the source region of the Yellow River: A new sediment record from Lake Gyaring, NE Tibetan Plateau

Arid

DOI	10.1016/j.jseaes.2020.104601
	Holocene hydroclimate in the source region of the Yellow River: A new sediment record from Lake Gyaring, NE Tibetan Plateau
	Zhao, Wenwei; Chen, Chunzhu; Jiang, Qingfeng; Ji, Ming; Zhen, Jianan; Yang, Yufeng; Ning, Dongliang; Li, Xiangzhong; Shen, Ji
通讯作者	Jiang, QF (corresponding author), Nantong Univ, Sch Geog Sci, Nantong 226007, Peoples R China.
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2021
卷号	205
英文摘要	The environmental history of the source region of the Yellow River (SRYR) is vital for understanding its hydrological response to climate processes in the alpine northeastern Tibetan Plateau (TP). In this study, we present the first sediment core record from Lake Gyaring, one of the largest fresh lakes in SRYR, using proxies of total organic carbon, total nitrogen, C/N ratio, delta C-13(org), chlorophyll a, and grain size, to discuss the environmental variations over past 10 kyr. The results show that sedimentary organic matter mainly originated from the aquatic macrophytes and phytoplankton, the relative abundance of which can serve as a qualitative indicator of lake level changes of Lake Gyaring. From 10 to 6.2 cal kyr B.P., the notable expansion of macrophytes was favored by the warm conditions and an enlarged littoral zone due to lake-level decline. The abrupt cooling between 8.9 and 8 cal kyr B.P. led to temporal lake-level rises that significantly reduced macrophyte primary production. After 6.2 cal kyr B.P., the lake turned to be phytoplankton-dominated following the cooling trend and stepwise increase in lake level. The inferred climate pattern in the lake catchment with an overall dry early to mid Holocene and moister mid to late Holocene disagrees with the Asian monsoon variations. This phenomenon is well recognized by the lake-level records from most of the northeastern TP lakes, implying that strong evaporation in semi-arid lake catchments could have outweighed the increased regional precipitation during early to mid Holocene and vice versa for mid to late Holocene.
英文关键词	Alpine lake Monsoon Lake level Yellow River Bulk organic matter Grain size
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000600416600001
WOS关键词	ORGANIC GEOCHEMICAL PROXIES ; ASIAN MONSOON ; HIGH-RESOLUTION ; LEVEL CHANGES ; HURLEG LAKE ; SOURCE AREA ; GRAIN-SIZE ; QINGHAI ; CLIMATE ; PRECIPITATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347982
作者单位	[Zhao, Wenwei; Chen, Chunzhu; Jiang, Qingfeng; Zhen, Jianan; Yang, Yufeng; Ning, Dongliang] Nantong Univ, Sch Geog Sci, Nantong 226007, Peoples R China; [Ji, Ming; Shen, Ji] Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China; [Li, Xiangzhong] Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China; [Shen, Ji] Nanjing Univ, Sch Geog & Marine Sci, Nanjing 210046, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenwei,Chen, Chunzhu,Jiang, Qingfeng,et al. Holocene hydroclimate in the source region of the Yellow River: A new sediment record from Lake Gyaring, NE Tibetan Plateau[J]. 南京大学,2021,205.
APA	Zhao, Wenwei.,Chen, Chunzhu.,Jiang, Qingfeng.,Ji, Ming.,Zhen, Jianan.,...&Shen, Ji.(2021).Holocene hydroclimate in the source region of the Yellow River: A new sediment record from Lake Gyaring, NE Tibetan Plateau.JOURNAL OF ASIAN EARTH SCIENCES,205.
MLA	Zhao, Wenwei,et al."Holocene hydroclimate in the source region of the Yellow River: A new sediment record from Lake Gyaring, NE Tibetan Plateau".JOURNAL OF ASIAN EARTH SCIENCES 205(2021).