气候变化领域集成服务门户(CCPortal): A short note on linkage of climatic records between a river valley and the upper timberline in the Sygera Mountains, southeastern Tibetan Plateau

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DOI	10.1016/j.gloplacha.2011.04.005
	A short note on linkage of climatic records between a river valley and the upper timberline in the Sygera Mountains, southeastern Tibetan Plateau
	Liang, Eryuan; Liu, Bo; Zhu, Liping; Yin, Zhi-Yong
通讯作者	Liang, EY (通讯作者)
发表日期	2011
ISSN	0921-8181
EISSN	1872-6364
起始页码	97
结束页码	102
卷号	77 期号:1-2
英文摘要	Tree-ring data from timberlines have been widely used to reconstruct past temperature variability. High-quality reconstructions depend on successful calibrations in which tree-ring records are compared with instrumental observations of climatic factors to establish quantitative relationships between tree growth and climate. Climatic data used in the calibrations are mostly from nearby meteorological stations, located generally in the valleys near human settlements of mountainous areas, regardless of whether climatic records at low elevations are representative for the upper timberline. In order to better understand the characteristics of the alpine environment at the upper timberline of blackseed juniper (Juniperus saltuaria) in the eastern side of the Sygera Mountains, southeastern Tibetan Plateau, an automatic weather station was established. We found that the variation in the daily/5-day/10-day/monthly mean temperatures and sums of precipitation on the valley bottom (3000 m a.s.l.) as well as the daily/seasonal sums of precipitation from the TRMM (Tropical Rainfall Measuring Mission) are highly correlated with the measurements at the upper timberline (4400 m a.s.l.). Thus, the variations of the valley bottom temperature and precipitation records are confident indicators of the conditions at the upper timberline on the southeastern Tibetan Plateau and hence can be used for the calibration in the dendroclimatic reconstructions based on timberline tree-ring data. For 5-day mean temperature pooled by individual months, the R-2 values of the regression models>0.60 between the valley bottom and timberline in February-August and October, and <0.40 in December. For 5-day total precipitation, the R-2 values>0.60 in March-July and October-December, and <0.40 in January, February, August and September. This study represents a small step towards fixing problems regarding to dendroclimatic calibrations. (C) 2011 Elsevier B.V. All rights reserved,
关键词	SUMMER TEMPERATURE TREE-RINGS PRECIPITATION RECONSTRUCTION
英文关键词	Dendroclimatic calibration; Climatic variability; Representative; Timberline; Valley bottom; Southeastern Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000292360100010
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257872
推荐引用方式 GB/T 7714	Liang, Eryuan,Liu, Bo,Zhu, Liping,et al. A short note on linkage of climatic records between a river valley and the upper timberline in the Sygera Mountains, southeastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2011,77(1-2).
APA	Liang, Eryuan,Liu, Bo,Zhu, Liping,&Yin, Zhi-Yong.(2011).A short note on linkage of climatic records between a river valley and the upper timberline in the Sygera Mountains, southeastern Tibetan Plateau.GLOBAL AND PLANETARY CHANGE,77(1-2).
MLA	Liang, Eryuan,et al."A short note on linkage of climatic records between a river valley and the upper timberline in the Sygera Mountains, southeastern Tibetan Plateau".GLOBAL AND PLANETARY CHANGE 77.1-2(2011).