Mid-Holocene climate variations recorded by palaeolake in marginal area of east Asian monsoon: A multi-proxy study

ISL OpenIR > 青海盐湖研究所知识仓储

	Mid-Holocene climate variations recorded by palaeolake in marginal area of east Asian monsoon: A multi-proxy study
	Long Hao 1; Tan Hongbin 1; Wang Naiang 2; Tan Liangcheng 3; Li Yu 2
	2007-12-01
发表期刊	CHINESE GEOGRAPHICAL SCIENCE
卷号	17 期号:4 页码:325-332
关键词	East Asian Monsoon Region Holocene Lacustrine Sediment Climate Change
摘要	Traditionally, the mid-Holocene in most parts of China was thought to be warmer with higher precipitation, resulting from a strong Asian summer monsoon. However, some recent researches have proposed a mid-Holocene drought interval of millennial-scale in East Asian monsoon margin areas. Thus whether mid-Holocene was dry or humid remains an open issue. Here, Zhuyeze palaeolake, the terminal lake of the Shiyang River Drainage lying in Asian monsoon marginal areas, was selected for reconstructing the details of climate variations during the Holocene, especially mid-Holocene, on the basis of a sedimentological analysis. Qingtu Lake (QTL) section of 6.92m depth was taken from Zhuyeze palacolake. Multi-proxy analysis of QTL section, including grain size, carbonate, TOC, C/N and delta C-13 of organic matter, was used to document regional climatic changes during 9-3 cal ka B.P. The record shows a major environmental change at 9.0-7.8 cal ka B.P., attributed to a climate trend towards warmth and humidity. This event was followed by a typical regional drought event which occurred during 7.8-7.5 cal ka B.P. And a warm and humid climate prevailed from 7.5 to 5.0 cal ka B.P., attributed to the warm/humid Holocene Optimum in this region. After that, the climate gradually became drier. Moreover, comparison of the climate record from this paper with the summer insolation at 30 degrees N indicates that the climate pattern reflecting the Asian monsoon changes was caused by insolation change.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5813
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Lanzhou Univ, Sch Resources & Environm, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Long Hao,Tan Hongbin,Wang Naiang,et al. Mid-Holocene climate variations recorded by palaeolake in marginal area of east Asian monsoon: A multi-proxy study[J]. CHINESE GEOGRAPHICAL SCIENCE,2007,17(4):325-332.
APA	Long Hao,Tan Hongbin,Wang Naiang,Tan Liangcheng,&Li Yu.(2007).Mid-Holocene climate variations recorded by palaeolake in marginal area of east Asian monsoon: A multi-proxy study.CHINESE GEOGRAPHICAL SCIENCE,17(4),325-332.
MLA	Long Hao,et al."Mid-Holocene climate variations recorded by palaeolake in marginal area of east Asian monsoon: A multi-proxy study".CHINESE GEOGRAPHICAL SCIENCE 17.4(2007):325-332.