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  4. 中国科学院新生代地质与环境重点实验室
Increased extreme drought events in south-central China since the last century:Evidence from oxygen isotope signatures preserved in tree ring cellulose

文献类型：期刊论文

作者Zhao, Qingyu1,4; Xu, Chenxi3,4,5; An, Wenling4; Liu, Yucheng2,4; Guo, Zhengtang4,5
刊名DENDROCHRONOLOGIA
出版日期2022-08-01
卷号74页码:11
关键词Tree-ring cellulose oxygen isotopes June-October relative humidity East Asian summer monsoon Pacific Decadal Oscillation El Nino-Southern Oscillation
ISSN号1125-7865
DOI10.1016/j.dendro.2022.125973
英文摘要Tree-ring cellulose oxygen isotope ratios (delta O-18) is a well-established proxy for hydroclimatic conditions in monsoon Asia. We reconstructed June-October relative humidity (RHJ-O) variations from 1808 to 2017, based on tree-ring cellulose 818O data, which explain 46.2% of the actual RH variance in the Nanyue region, south -central China. Extreme wet events occurred frequently prior to the 1900s, but there have been more extreme dry events since the 1900s, apart from the late 1930s and early 1950s. Periodicity analysis revealed that the reconstructed RHJ-O records show obvious 15-30 years cycles from the 1830-1970s. The multi-decadal signals may reflect the effect of the Pacific Decadal Oscillation (PDO) on hydroclimate. In the positive PDO phase, there is drying in south-central China, which is related to a weaker East Asian summer monsoon (EASM) via the Pacific-Japan teleconnection. The decadal signal has weakened since the 1970s. In addition, the reconstructed RHJ-O record shows strong interannual variations, which may be related to the Central Pacific El Nin & SIM;o-Southern Oscillation (CP ENSO). During extreme CP El Nin & SIM;o events, there is a weaker EASM due to the Pacific-Japan teleconnection, and the study site experienced drought. Our reconstructed moisture record is characterized by a decreasing influence from the PDO and increasing influence from the CP ENSO in recent decades. Moreover, the frequency of CP ENSO events is projected to increase under anthropogenic warming. Consequently, more extreme droughts which are related to CP ENSO events may increase in the south-central China in near future.
WOS关键词ASIAN SUMMER MONSOON ; PACIFIC DECADAL OSCILLATION ; EL-NINO ; HISTORICAL DOCUMENTS ; STABLE-ISOTOPES ; EASTERN CHINA ; NORTH PACIFIC ; TIME-SERIES ; PRECIPITATION ; DELTA-O-18
资助项目National Natural Science Foundation of China[42022059] ; National Natural Science Foundation of China[41888101] ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26020000] ; Key Research Program of the Institute of Geology and Geophysics[IGGCAS-201905]
WOS研究方向Forestry ; Physical Geography
语种英语
WOS记录号WOS:000808352200004
出版者ELSEVIER GMBH
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics ; Key Research Program of the Institute of Geology and Geophysics
源URL[http://ir.iggcas.ac.cn/handle/132A11/106110]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Xu, Chenxi
作者单位1.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, 19,Beitucheng Western Rd,Chaoyang Dist, Beijing 100029, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
5.CAS Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Qingyu,Xu, Chenxi,An, Wenling,et al. Increased extreme drought events in south-central China since the last century:Evidence from oxygen isotope signatures preserved in tree ring cellulose[J]. DENDROCHRONOLOGIA,2022,74:11.
APA Zhao, Qingyu,Xu, Chenxi,An, Wenling,Liu, Yucheng,&Guo, Zhengtang.(2022).Increased extreme drought events in south-central China since the last century:Evidence from oxygen isotope signatures preserved in tree ring cellulose.DENDROCHRONOLOGIA,74,11.
MLA Zhao, Qingyu,et al."Increased extreme drought events in south-central China since the last century:Evidence from oxygen isotope signatures preserved in tree ring cellulose".DENDROCHRONOLOGIA 74(2022):11.

入库方式： OAI收割

来源：地质与地球物理研究所

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