Tree-ring delta O-18, a tool to crack the paleo-hydroclimatic code in subtropical China

doi:10.1016/j.quaint.2017.10.038

IEECAS OpenIR > 现代环境研究室

	Tree-ring delta O-18, a tool to crack the paleo-hydroclimatic code in subtropical China
	Cai, Qiufang 1; Liu, Yu 1,2,3,4; Duan, Bingchuang 1,5; Li, Qiang 1; Sun, Changfeng 1; Wang, Lu 1,5
通讯作者	Cai, Qiufang(caiqf@ieecas.cn) ; Liu, Yu(liuyu@loess.llqg.ac.cn)
	2018-09-10
发表期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
卷号	487 页码:3-11
摘要	Tree ring plays an important role in deciphering the paleoclimatic signals. Although tree-ring width (TRW) has obvious advantages in studying the hydroclimatic history in the middle-high latitudes, it has certain limitation in hydroclimatic signal extraction in the tropical to subtropical areas, which greatly limits our fully understanding about the hydroclimatic history in these areas. In this work, tree-ring delta O-18 (delta O-18(tree)) records from five independent tree-ring cores were measured and a composite delta O-18(tree) record (1939-2014) was developed in Guilin, subtropical southwest China. No "juvenile effect" existed in this delta O-18(tree) record and no relationship was found between delta O-18(tree) and TRW. Correlation analysis with the climatic parameters demonstrated that the delta(18)O(tree )record significantly (p < 0.01) and negatively correlated with all the hydroclimatic parameters during the growing season (e.g. April-October precipitation, August-October relative humidity and April-November standardized precipitation -evapotranspiration index), while it only positively correlated with the August-September mean temperature (p < 0.05). At high frequency, the above relationships were greatly strengthened. Compared with the temperature-limited TRW in Guilin and other areas of subtropical China, delta(18)O(tree )was a better choice for hydroclimatic reconstruction. Moreover, the delta O-18(tree) record in Guilin showed high consistency with other moisture-sensitive delta(18)O(tree )records in a large area of central-southeastern China. Analysis revealed that both large-scale circulation system (e.g. Indian summer monsoon, ENSO, westerlies) and local weather system significantly influenced the growing-season hydroclimatic variation in the study area. This study provides great potential for extracting hydroclimatic information from longer-living trees in subtropical China. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
关键词	Hydroclimatic proxy ENSO Asian summer monsoon Growing season Tree-ring delta O-18
DOI	10.1016/j.quaint.2017.10.038
关键词[WOS]	STABLE-CARBON-ISOTOPE ; SOUTHEAST CHINA ; YANGTZE-RIVER ; 2 CENTURIES ; PRECIPITATION ; TEMPERATURE ; OXYGEN ; RECORD ; SERIES ; VARIABILITY
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41671212] ; National Natural Science Foundation of China[41171170] ; National Natural Science Foundation of China[41630531] ; National Natural Science Foundation of China[41371221] ; CAS Light of West China Program ; State Key Laboratory of Loess and Quaternary Geology foundation (SKLLQG)
WOS研究方向	Physical Geography ; Geology
项目资助者	National Natural Science Foundation of China ; CAS Light of West China Program ; State Key Laboratory of Loess and Quaternary Geology foundation (SKLLQG)
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000439047300002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13247
专题	现代环境研究室
通讯作者	Cai, Qiufang; Liu, Yu
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quatemary Geol, Xian 710075, Shaanxi, Peoples R China 2.Beijing Normal Univ, IRCESF, Beijing 100875, Peoples R China 3.Beijing Normal Univ, JCGCS, Beijing 100875, Peoples R China 4.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210046, Jiangsu, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cai, Qiufang,Liu, Yu,Duan, Bingchuang,et al. Tree-ring delta O-18, a tool to crack the paleo-hydroclimatic code in subtropical China[J]. QUATERNARY INTERNATIONAL,2018,487:3-11.
APA	Cai, Qiufang,Liu, Yu,Duan, Bingchuang,Li, Qiang,Sun, Changfeng,&Wang, Lu.(2018).Tree-ring delta O-18, a tool to crack the paleo-hydroclimatic code in subtropical China.QUATERNARY INTERNATIONAL,487,3-11.
MLA	Cai, Qiufang,et al."Tree-ring delta O-18, a tool to crack the paleo-hydroclimatic code in subtropical China".QUATERNARY INTERNATIONAL 487(2018):3-11.