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Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces

文献类型：期刊论文

作者Liu, Bin3,4; Sheng, Enguo3,4; Yu, Keke2; Zhou, Kang'en1; Lan, Jianghu3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2022-05-01
卷号65期号:5页码:949-965
ISSN号1674-7313
关键词Lake sediments Southwest China Monsoon precipitation Distinct climate periods Inter-tropical Convergence Zone
DOI10.1007/s11430-021-9888-y
通讯作者Sheng, Enguo(shengeg1985@126.com)
英文摘要Understanding hydroclimatic patterns and their possible driving mechanisms during distinct climate periods over the last 1500 years-such as the Medieval Warm Period (MWP), the Little Ice Age (LIA), and the Current Warm Period-is crucial for predicting future changes to monsoon precipitation in southwest China under global warming scenarios. In this study, based on Pb-210 and Cs-137 dating of surface sediments and AMS C-14 dating of terrestrial plant residues, we establish a robust age model that covers the last similar to 1500 years (AD 439-2012) at Lake Yihai in southwest China. We use analyses of multiple geochemical proxy indices, including loss on ignition at 550 degrees C, total organic carbon, total nitrogen, C/N ratios, and stable carbon isotopes of organic matter to reconstruct changes in summer monsoon precipitation at Lake Yihai during the last similar to 1500 years. The results show that, over southwest China, warm and dry climate conditions prevailed during the MWP (AD 1000-1400) and the past 200 years, whereas conditions during the LIA (AD 1400-1800) were cold and wet. This is consistent with evidence from other geological records over southwest China, such as stalagmite and lake sediment data. Similar hydroclimatic patterns have occurred over the last 1500 years in adjacent tropical/subtropical monsoon regions where the climate is similarly dominated by the Indian summer monsoon (e.g., South China, the South China Sea, Southeast Asia, Northeast India). We suggest that the meridional migration of the mean position of the Inter-tropical Convergence Zone, and El Nino/Southern Oscillation conditions which are linked to tropical Pacific sea surface temperature, are responsible for centennial-scale hydroclimatic patterns over southwest China and adjacent areas during the last 1500 years.
WOS关键词ASIAN SUMMER MONSOON ; INTERTROPICAL CONVERGENCE ZONE ; WESTERN NORTH PACIFIC ; HIGH-RESOLUTION ; ORGANIC-MATTER ; LATE-HOLOCENE ; MOISTURE TRANSPORT ; GLOBAL MONSOON ; DONGGE CAVE ; ICE-AGE
资助项目National Natural Science Foundation of China[41807429] ; National Natural Science Foundation of China[41702190] ; Open Fund Project of State Key Laboratory of Loess and Quaternary Geology, IEECAS[SKLLQG1517]
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000780765400001
资助机构National Natural Science Foundation of China ; Open Fund Project of State Key Laboratory of Loess and Quaternary Geology, IEECAS
源URL[http://ir.ieecas.cn/handle/361006/17658]  
专题地球环境研究所_现代环境研究室
通讯作者Sheng, Enguo
作者单位1.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
2.Baoji Univ Arts & Sci, Shaanxi Key Lab Disasters Monitoring & Mech Simul, Baoji 721013, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Zunyi Normal Univ, Coll Resources & Environm, Zunyi 563006, Guizhou, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Bin,Sheng, Enguo,Yu, Keke,et al. Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces[J]. SCIENCE CHINA-EARTH SCIENCES,2022,65(5):949-965.
APA Liu, Bin,Sheng, Enguo,Yu, Keke,Zhou, Kang'en,&Lan, Jianghu.(2022).Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces.SCIENCE CHINA-EARTH SCIENCES,65(5),949-965.
MLA Liu, Bin,et al."Variations in monsoon precipitation over southwest China during the last 1500 years and possible driving forces".SCIENCE CHINA-EARTH SCIENCES 65.5(2022):949-965.

入库方式： OAI收割

来源：地球环境研究所

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