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Late Holocene Indian summer monsoon variations recorded at Lake Erhai, Southwestern China
Xu, Hai1; Zhou, Xinying2; Lan, Jianghu1; Liu, Bin1; Sheng, Enguo1; Yu, Keke1; Cheng, Peng1; Wu, Feng1; Hong, Bin3; Yeager, Kevin M.4; Xu, Sheng5
2015-03-01
Source PublicationQUATERNARY RESEARCH
ISSN0033-5894
Volume83Issue:2Pages:307-314
SubtypeArticle
Abstract

In this study we report changes in Indian summer monsoon (ISM) intensity during the past 3500 yr inferred from proxy indices at Lake Erhai, southwestern China. Both the pollen concentrations and other proxy indices, including sediment grain size, total organic carbon contents (TOC), and elemental contents (e.g., Fe, Al), clearly indicate a long term decreasing trend in ISM intensity over the late Holocene. During the period from approximately AD 750 to AD 1200, pollen concentrations of conifer and broadleaf trees, and herbs reached the lowest levels over the past 3500 yr; while the pollen percentages of both herbs and broadleaf trees increased, suggesting a significant medieval drought. The grain size, TOC, and elemental contents also support an arid climate during the medieval period. The Little Ice Age (LIA) at Lake Erhai was characterized as cold and wet. The medieval and LIA climatic patterns at Lake Erhai were similar to those over most of the ISM areas, but anti-phase with those over East Asian summer monsoon (EASM) areas. We suspect that sea surface temperature variations in the Indo-Pacific oceans and the related land-sea thermal contrasts may be responsible for such hydroclimatic differences between EASM and ISM areas. (C) 2014 University of Washington. Published by Elsevier Inc. All rights reserved.

KeywordLake Erhai In Southwestern chIna Indian Summer Monsoon Precipitation Late Holocene Medieval Period
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.yqres.2014.12.004
WOS KeywordMedieval Warm Period ; North-atlantic Climate ; Yunnan Province ; Vegetation History ; Tibetan Plateau ; Asian Monsoon ; Sediments ; Drought ; South ; Precipitation
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000353093500005
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9376
Collection现代环境研究室
Corresponding AuthorXu, Hai
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Human Evolut & Archeol Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China
4.Univ KY, Dept Earth & Environm Sci, Lexington, KY 40506 USA
5.Scottish Univ Environm Res Ctr, Glasgow G75 0QF, Lanark, Scotland
Recommended Citation
GB/T 7714
Xu, Hai,Zhou, Xinying,Lan, Jianghu,et al. Late Holocene Indian summer monsoon variations recorded at Lake Erhai, Southwestern China[J]. QUATERNARY RESEARCH,2015,83(2):307-314.
APA Xu, Hai.,Zhou, Xinying.,Lan, Jianghu.,Liu, Bin.,Sheng, Enguo.,...&Xu, Sheng.(2015).Late Holocene Indian summer monsoon variations recorded at Lake Erhai, Southwestern China.QUATERNARY RESEARCH,83(2),307-314.
MLA Xu, Hai,et al."Late Holocene Indian summer monsoon variations recorded at Lake Erhai, Southwestern China".QUATERNARY RESEARCH 83.2(2015):307-314.
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