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Hydrological Extremes in the Upper Yangtze River Over the Past 700 yr Inferred From a Tree Ring delta O-18 Record

文献类型：期刊论文

作者An, Wenling2; Li, Jinjian1; Wang, Shu5; Xu, Chenxi2,4; Shao, Xuemei3; Qin, Ningsheng5; Guo, Zhengtang2,4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2022-05-27
卷号127期号:10页码:15
关键词tree ring oxygen isotope hydrological extremes upper Yangtze River
ISSN号2169-897X
DOI10.1029/2021JD036109
英文摘要Ongoing global warming has a strong influence on regional hydrological cycles. The upper reaches of the Yangtze River (UYR) are highly vulnerable to extreme hydrological droughts and floods, but a lack of long-term streamflow observations has limited our understanding on global warming influences. Here, we establish an annually resolved and absolutely dated tree-ring oxygen (delta O-18) isotope chronology and use it to reconstruct the summer streamflow history of the UYR between 1260 and 2017. The UYR experienced 79 extreme floods and 107 extreme hydrological droughts over this period. We found a trend toward dry conditions in the region with tendencies for an increased drought probability since around 1850s. Especially, the frequency of hydrological droughts in recent decades has been outside the envelope of natural variability of extreme hydrological droughts. The temporal evolution of hydrological extremes is closely linked to variability of the Indian summer monsoon (ISM) at decadal scales. The UYR has experienced more frequent droughts during dry spells and experienced more frequent floods during wet spells of the ISM. The recent increase in the frequency of hydrological droughts is consistent with the observed trend toward a weaker ISM and increasing temperatures. Weaker transport of low-level moisture and greater evaporation caused by global warming have contributed to the increase in extreme hydrological droughts. Our results thus provide a long-term context for observed hydrological changes and suggest that the UYR will experience more frequent and severe extreme events as a consequence of increasing greenhouse gas emissions.
WOS关键词TIBETAN PLATEAU ; STABLE-ISOTOPES ; STREAMFLOW RECONSTRUCTION ; SUMMER MONSOON ; VARIABILITY ; PRECIPITATION ; CELLULOSE ; WATER ; BASIN ; HUMIDITY
资助项目National Natural Science Foundation of China[41772173] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[42022059] ; National Natural Science Foundation of China[41630529] ; National Natural Science Foundation of China[41877457] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDB26020000] ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Key Research Program of the Institute of Geology and Geophysics (CAS)[IGGCAS-201905]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000799043300001
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, China ; Key Research Program of the Institute of Geology and Geophysics (CAS) ; Key Research Program of the Institute of Geology and Geophysics (CAS)
源URL[http://ir.iggcas.ac.cn/handle/132A11/105953]  
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; Qin, Ningsheng
作者单位1.Chengdu Univ Informat Technol, Sch Atmospher Sci Plateau Atmosphere & Environm, Key Lab Sichuan Prov, Chengdu, Peoples R China
2.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
4.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
5.China Meteorol Adm, Chengdu Heavy Rain & Drought Flood Disasters Plat, Key Lab Sichuan Prov, Inst Plateau Meteorol, Chengdu, Peoples R China
推荐引用方式
GB/T 7714		 An, Wenling,Li, Jinjian,Wang, Shu,et al. Hydrological Extremes in the Upper Yangtze River Over the Past 700 yr Inferred From a Tree Ring delta O-18 Record[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2022,127(10):15.
APA An, Wenling.,Li, Jinjian.,Wang, Shu.,Xu, Chenxi.,Shao, Xuemei.,...&Guo, Zhengtang.(2022).Hydrological Extremes in the Upper Yangtze River Over the Past 700 yr Inferred From a Tree Ring delta O-18 Record.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,127(10),15.
MLA An, Wenling,et al."Hydrological Extremes in the Upper Yangtze River Over the Past 700 yr Inferred From a Tree Ring delta O-18 Record".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 127.10(2022):15.

入库方式： OAI收割

来源：地质与地球物理研究所

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