气候变化领域集成服务门户(CCPortal): Climate signals from tree ring chronologies of the upper and lower treelines in the Dulan region of the Northeastern Qinghai-Tibetan Plateau

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DOI	10.1111/j.1744-7909.2006.00158.x
	Climate signals from tree ring chronologies of the upper and lower treelines in the Dulan region of the Northeastern Qinghai-Tibetan Plateau
	Liu, LS; Shao, XM; Liang, EY
发表日期	2006
ISSN	1672-9072
EISSN	1744-7909
起始页码	278
结束页码	285
卷号	48 期号:3
英文摘要	The radial growth of trees in mountainous areas is subject to environmental conditions associated with changes in elevation. To assess the sensitivity of tree-ring growth to climate variation over a wide range of elevations, we compared the chronological characteristics of Sabina przewalskii Kom. and their relationships with climatic variables at the upper and lower treelines in the Dulan region of the northeastern Qinghai-Tibetan Plateau. It was found that the radial growth in this region was controlled primarily by precipitation in late spring and early summer (from May to June). In addition, a higher temperature from April to June could intensify drought stress and lead to narrow tree rings. The significant similarity in climate-tree growth relationships at both the upper and lower treelines indicated that tree rings of S. przewalskii in this region are able to provide common regional climate information. However, the chronologies at the lower forest limits showed a higher standard deviation and more significant correlations with climatic factors, suggesting that the radial growth there was more significantly influenced by climate variation. The first principal component of the four chronologies showed a common growth response to local climate. The second principal component showed a contrasting growth response between different sampling sites. The third principal component revealed different growth patterns in response to altitudinal variation. Further analysis indicated that the precipitation in late spring and early summer controlled the growth of S. przewalskii on a regional scale and that other factors, such as microenvironment at the sampling sites, also affected the strength of the climatic response of tree growth.
关键词	RADIAL GROWTH VARIABILITY MENZIESII PATTERNS
英文关键词	dendroclimatology; clendroecology; Qinghai-Tibetan Plateau; Sabina przewalskii; treeline
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
WOS类目	Biochemistry & Molecular Biology ; Plant Sciences
WOS记录号	WOS:000235653300005
来源期刊	JOURNAL OF INTEGRATIVE PLANT BIOLOGY
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/257415
推荐引用方式 GB/T 7714	Liu, LS,Shao, XM,Liang, EY. Climate signals from tree ring chronologies of the upper and lower treelines in the Dulan region of the Northeastern Qinghai-Tibetan Plateau[J]. 中国科学院青藏高原研究所,2006,48(3).
APA	Liu, LS,Shao, XM,&Liang, EY.(2006).Climate signals from tree ring chronologies of the upper and lower treelines in the Dulan region of the Northeastern Qinghai-Tibetan Plateau.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,48(3).
MLA	Liu, LS,et al."Climate signals from tree ring chronologies of the upper and lower treelines in the Dulan region of the Northeastern Qinghai-Tibetan Plateau".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 48.3(2006).