Tree-ring delta O-18 based PDSI reconstruction in the Mt. Tianmu region since 1618 AD and its connection to the East Asian summer monsoon

doi:10.1016/j.ecolind.2019.05.043

	Tree-ring delta O-18 based PDSI reconstruction in the Mt. Tianmu region since 1618 AD and its connection to the East Asian summer monsoon
	Liu, Yu 1,2,4,7; Fang, Congxi 3,4; Li, Qiang 4; Song, Huiming 4; Ta, Weiyuan 5; Zhao, Guijie 6; Sun, Changfeng 4
刊名	ECOLOGICAL INDICATORS
	2019-09-01
卷号	104 页码:636-647
关键词	Mt. Tianmu, China Tree-ring delta O-18 Palmer Drought Severity Index (PDSI) East Asian summer monsoon (EASM)
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2019.05.043
通讯作者	Liu, Yu(liuyu@loess.llqg.ac.cn)
英文摘要	Previous studies on tree-ring stable oxygen isotopes (delta O-18) in the monsoon region of China have rarely involved in variations of the East Asian summer monsoon (EASM) and its rainbelt. In this study, a tree-ring delta O-18 chronology of Cryptomeria fortune at Mt. Tianmu, located south of the Yangtze River lower reaches, was developed and applied to reconstruct the local June-October Palmer Drought Severity Index (PDSI6-10) during the 1618-2013 AD period. The reconstruction explains 40.5% of the observational PDSI6-10 variances during 1951-2013, captures the actual variation features at both high and low frequencies, largely represents the PDSI6-10 in the middle and lower reach regions of the Yangtze River and further south, and the reconstruction is well-compared with other existing proxies. The reconstruction reveals that the durations of 1620 s-1660 s, 1680 s-1700 s, 1810 s-1830 s, 1850 s, 1900 s-1940 s, and 1960 s were drought periods, while wet durations were 1730 s-1770 s, 1790 s-1800 s, 1860 s-1870 s, 1950 s, and 1980 s-1990 s. Based on the meteorological re-analysis data and new EASM definitions, the reconstructed PDSI6-10 correlates with the meiyu rainbelt precipitation and EASM intensity during May-June, which is when Mt. Tianmu is affected by the EASM rainbelt. The Mt. Tianmu tree-ring delta O-18 chronology exhibits significantly positive correlations with El Nino-Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO). The relationship of the tree-ring delta O-18 chronology with the PDO could be due to EASM associations, while it is not clear to explain the mechanism of ENSO connecting to the tree-ring oxygen isotope.
资助项目	National Natural Science Foundation of China[41630531] ; National Natural Science Foundation of China[41873021] ; CAS Research Program[QYZDJ-SSW-DQC021] ; CAS Research Program[GJHZ1777] ; Key Project of State Key Laboratory of Loess and Quaternary Geology (SKLLQG)
WOS关键词	SEA-SURFACE TEMPERATURE ; TROPICAL PACIFIC SSTS ; INNER-MONGOLIA ; INTERDECADAL VARIATIONS ; PRECIPITATION RECORDS ; DROUGHT VARIABILITY ; STABLE-ISOTOPES ; NORTH CHINA ; CLIMATE ; MOUNTAIN
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470966000065
资助机构	National Natural Science Foundation of China ; CAS Research Program ; Key Project of State Key Laboratory of Loess and Quaternary Geology (SKLLQG)
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13852]
专题	地球环境研究所_现代环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Liu, Yu
作者单位	1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Earth & Environm Sci, Xian 710049, Shaanxi, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 5.Shaanxi Appraisal Ctr Environm Engn, Xian 710065, Shaanxi, Peoples R China 6.Beijing Municipal Weather Forecast Ctr, Beijing 100089, Peoples R China 7.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yu,Fang, Congxi,Li, Qiang,et al. Tree-ring delta O-18 based PDSI reconstruction in the Mt. Tianmu region since 1618 AD and its connection to the East Asian summer monsoon[J]. ECOLOGICAL INDICATORS,2019,104:636-647.
APA	Liu, Yu.,Fang, Congxi.,Li, Qiang.,Song, Huiming.,Ta, Weiyuan.,...&Sun, Changfeng.(2019).Tree-ring delta O-18 based PDSI reconstruction in the Mt. Tianmu region since 1618 AD and its connection to the East Asian summer monsoon.ECOLOGICAL INDICATORS,104,636-647.
MLA	Liu, Yu,et al."Tree-ring delta O-18 based PDSI reconstruction in the Mt. Tianmu region since 1618 AD and its connection to the East Asian summer monsoon".ECOLOGICAL INDICATORS 104(2019):636-647.