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Dynamic relationships between Picea crassifolia growth and climate at upper treeline in the Qilian Mts., Northeast Tibetan Plateau, China
Zhang, Yongxiang1; Shao, Xuemei2; Wilmking, Martin1
2011
Source PublicationDENDROCHRONOLOGIA
Volume29Issue:4Pages:185-199
AbstractKnowledge of the spatial pattern and temporal relationships between tree-growth and climatic factors are important not only for the projection of forest growth under varying climate but for dendroclimatology in general. Here, we systematically investigated tree-growth climate relationships of Picea crassifolia at upper treeline in the Qilian Mts., northwestern China. 297 trees from eleven sites, covering a large part of the natural range of this species, show increasing and partly divergent correlations with temperature in the most recent decades. The dominant signal at all sites was a strengthening of negative correlations of annual radial growth with summer temperature. In a subset of trees at six sites, a strengthening positive correlation with summer temperatures existed as well. Wetter and high altitude sites tended to show a higher percentage of trees that are positively correlated with warming temperatures, indicating that some individuals there may take advantage of warmer conditions. Divergent responses between the two sub-populations clustered by their response to climate factor were significantly stronger in the last 30 years compared to earlier time slices. In the same time frame, hydrothermal conditions of the investigation area changed to a drier and warmer combination. Drought conditions, most likely affecting the radial growth of most P. crassifolia, have been intensifying over time and expanding spatially from the middle Qilian Mts. to most of our study area during the last half century. While explanations such as methodological effects due to trend removal or human disturbance at the sampling sites might be able to explain the result at single sites, the spatial and temporal co-occurrence of large scale changes in climate and tree growth suggests a causal link between them. (C) 2011 Istituto Italiano di Dendrocronologia. Published by Elsevier GmbH. All rights reserved.
SubtypeArticle
KeywordPicea Crassifolia Recent Warming Instable Climate-growth Relationships Response Divergence Drought Stress Northeast Tibet Plateau
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedPlant Sciences ; Forestry
WOS KeywordNORTHWESTERN CHINA ; DIVERGENCE PROBLEM ; WHITE SPRUCE ; TEMPERATURE ; RESPONSES ; SENSITIVITY ; QINGHAI ; RECONSTRUCTION ; 20TH-CENTURY ; MOUNTAINS
Indexed BySCI
Language英语
WOS SubjectPlant Sciences ; Forestry
WOS IDWOS:000297183200002
PublisherELSEVIER GMBH, URBAN & FISCHER VERLAG
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68018
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Yongxiang
Affiliation1.Ernst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, D-17487 Greifswald, Germany
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yongxiang,Shao, Xuemei,Wilmking, Martin. Dynamic relationships between Picea crassifolia growth and climate at upper treeline in the Qilian Mts., Northeast Tibetan Plateau, China[J]. DENDROCHRONOLOGIA,2011,29(4):185-199.
APA Zhang, Yongxiang,Shao, Xuemei,&Wilmking, Martin.(2011).Dynamic relationships between Picea crassifolia growth and climate at upper treeline in the Qilian Mts., Northeast Tibetan Plateau, China.DENDROCHRONOLOGIA,29(4),185-199.
MLA Zhang, Yongxiang,et al."Dynamic relationships between Picea crassifolia growth and climate at upper treeline in the Qilian Mts., Northeast Tibetan Plateau, China".DENDROCHRONOLOGIA 29.4(2011):185-199.
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