Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history

doi:10.1016/j.quascirev.2004.01.005

	Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history
	Xiao, JL ; Xu, QH ; Nakamura, T ; Yang, XL ; Liang, WD ; Inouchi, Y
刊名	QUATERNARY SCIENCE REVIEWS
	2004-07-01
卷号	23 期号:14-15 页码:1669-1679
ISSN号	0277-3791
DOI	10.1016/j.quascirev.2004.01.005
文献子类	Article
英文摘要	DH99a sediment core recovered at the center of Daihai Lake in north-central China was analyzed at 4-cm intervals for pollen assemblage and concentration. The pollen record spanning the last ca 10,000 yr revealed a detailed history of vegetation and climate changes over the Daihai Lake region during the Holocene. From ca 10,250 to 7900 cal yr BP, and herbs and shrubs dominated the lake basin in company with patches of mixed pine and broadleaved forests, indicating a mild and dry climatic condition. Over this period, the woody plants displayed an increasing trend, which may suggest a gradual increase in warmth and humidity. The period between ca 7900 and 4450 cal yr BP exhibits large-scale covers of mixed coniferous and broadleaved forests, marking a warm and humid climate. Changes in the composition of the forests indicate that both temperature and precipitation displayed obvious fluctuations during this period, i.e., cool and humid ca 7900-7250 cal yr BP, warm and slightly humid ca 7250-6050 cal yr BP, warm and humid between ca 6050 and 5100 cal yr BP, mild and slightly humid ca 5100-4800 cal yr BP, and mild and humid ca 4800-4450 cal yr BP. The period can be viewed as the Holocene optimum (characterized by a warm and moist climate) of north-central China, with the maximum (dominated both by warmest temperatures and by richest precipitations) occurring from ca 6050 to 5100 cal yr BP. During the period of ca 4450-2900 cal yr BP, the woody plants declined, and the climate generally became cooler and drier than the preceding period. This period is characterized by a cold, dry episode from ca 4450 to 3950 cal yr BP, a warm, slightly humid interval between ca 3950 and 3500 cal yr BP and a mild, slightly dry episode from ca 3500 to 2900 cal yr BP, and appears to be a transition from warm and humid to cold and dry climatic conditions. Since ca 2900 cal yr ago, the forests disappeared and the vegetation density decreased, reflecting a cool and dry climate. However, a relative recovery of the woody plants occurring between ca 1700 and 1350 cal yr BP may denote an increase both in temperature and in precipitation. Fluctuations in the climatic condition of the Daihai Lake region were not only related to changes in the seasonal distribution of solar insolation and in the axis and intensity of the ocean current in the western North Pacific but were also closely linked to variations in the position and strength of polar high-pressure systems and in the pattern and intensity of the Westerly winds. (C) 2004 Elsevier Ltd. All rights reserved.
WOS关键词	POLLEN
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000222438500012
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/79473]
专题	中国科学院地质与地球物理研究所
通讯作者	Xiao, JL
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Xian 710075, Peoples R China 3.Hebei Normal Univ, Coll Resources & Environm, Shijiazhuang 050016, Peoples R China 4.Nagoya Univ, Ctr Chronol Res, Nagoya, Aichi 4648602, Japan 5.Hebei Acad Sci, Inst Geog, Shijiazhuang 050011, Peoples R China 6.Ehime Univ, Fac Sci, Dept Earth Sci, Matsuyama, Ehime 7908577, Japan
推荐引用方式 GB/T 7714	Xiao, JL,Xu, QH,Nakamura, T,et al. Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history[J]. QUATERNARY SCIENCE REVIEWS,2004,23(14-15):1669-1679.
APA	Xiao, JL,Xu, QH,Nakamura, T,Yang, XL,Liang, WD,&Inouchi, Y.(2004).Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history.QUATERNARY SCIENCE REVIEWS,23(14-15),1669-1679.
MLA	Xiao, JL,et al."Holocene vegetation variation in the Daihai Lake region of north-central China: a direct indication of the Asian monsoon climatic history".QUATERNARY SCIENCE REVIEWS 23.14-15(2004):1669-1679.