气候变化领域集成服务门户(CCPortal): Up to 400-year-old Rhododendron shrubs on the southeastern Tibetan Plateau: prospects for shrub-based dendrochronology

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DOI	10.1111/bor.12122
	Up to 400-year-old Rhododendron shrubs on the southeastern Tibetan Plateau: prospects for shrub-based dendrochronology
	Lu, Xiaoming; Julio Camarero, J.; Wang, Yafeng; Liang, Eryuan; Eckstein, Dieter
通讯作者	Liang, EY (通讯作者)
发表日期	2015
ISSN	0300-9483
EISSN	1502-3885
起始页码	760
结束页码	768
卷号	44 期号:4
英文摘要	In harsh and treeless environments, shrubs constitute the dominant growth form of woody plants, thus offering the opportunity to extend dendrochronological networks beyond the uppermost and northernmost distribution limits of trees. However, shrub-based dendrochronology has so far resulted in only a few long and climate-responsive ring-width chronologies at such stressful sites, particularly above the alpine tree line. A previous study on an alpine Rhododendron shrub species resulted in <80-year-long ring-width chronologies. Here, we collected Rhododendron agan-niphum var. schizopeplum stems from elevations between 4000 and 4500 m a.s.l. on the SE Tibetan Plateau and built six tree-ring width chronologies. One of them is 401 years long and well replicated from AD 1670 to 2011 (EPS>0.85), thus representing the longest shrub chronology available to date. A principal component analysis (PCA) converted the total variability of all six site chronologies into PCs. Then, the six site chronologies and the PC1, accounting for 65.9% of the total variance of the tree-ring width, were correlated with time series of monthly climate data. Based on this, the year-to-year variability of the ring-width indices was positively correlated with July temperature, which thus turned out to be the dominant factor controlling growth. Accordingly, such long shrub-ring chronologies may act as climatic and ecological proxies in treeless environments of the Tibetan Plateau.
关键词	TREE-RING RECORD PRECIPITATION VARIATION TEMPERATURE-VARIATIONS CLIMATIC SIGNALS SYGERA MOUNTAINS ARCTIC TUNDRA DWARF SHRUBS SMITH FIR GROWTH RECONSTRUCTION
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000362769600009
来源期刊	BOREAS
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/258562
推荐引用方式 GB/T 7714	Lu, Xiaoming,Julio Camarero, J.,Wang, Yafeng,et al. Up to 400-year-old Rhododendron shrubs on the southeastern Tibetan Plateau: prospects for shrub-based dendrochronology[J]. 中国科学院青藏高原研究所,2015,44(4).
APA	Lu, Xiaoming,Julio Camarero, J.,Wang, Yafeng,Liang, Eryuan,&Eckstein, Dieter.(2015).Up to 400-year-old Rhododendron shrubs on the southeastern Tibetan Plateau: prospects for shrub-based dendrochronology.BOREAS,44(4).
MLA	Lu, Xiaoming,et al."Up to 400-year-old Rhododendron shrubs on the southeastern Tibetan Plateau: prospects for shrub-based dendrochronology".BOREAS 44.4(2015).