气候变化领域集成服务门户(CCPortal): Qinghai spruce (Picea crassifolia) growth-climate response between lower and upper elevation gradient limits: a case study along a consistent slope in the mid-Qilian Mountains region

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DOI	10.1007/s12665-015-4930-5
	Qinghai spruce (Picea crassifolia) growth-climate response between lower and upper elevation gradient limits: a case study along a consistent slope in the mid-Qilian Mountains region
	Wang, Bo; Chen, Tuo; Wu, Guoju; Xu, Guobao; Zhang, Youfu; Gao, Haining; Zhang, Yong; Feng, Qi
发表日期	2016
ISSN	1866-6280
EISSN	1866-6299
卷号	75 期号:3
英文摘要	Tree-ring width chronologies are important records of climate change. Mounting evidence suggests that tree-ring climate response is elevation dependent. In this study, even-aged Qinghai spruce (Picea crassifolia Kom.) chronologies from six sites along a consistent slope in the Qilian Mountains region were selected to investigate altitudinal variability of growth-climate response. Results showed that growth-climate response of this species at different elevations was limited by identical factors. In the Qilian Mountains, P. crassifolia tree-ring growth was limited primarily by drought conditions which are determined by precipitation and temperature in the Qilian Mountains along the entire elevation gradient, exhibiting a positive correlation with PDSI in growth season, a positive correlation with precipitation in May and a negative correlation with the maximum temperature in June. Moreover, P. crassifolia recruitment dynamics coincided well with the temperature variations, suggesting that recruitment rates at different elevations were all primarily influenced by temperature. What was noteworthy was that the great decrease in the mean sensitivity and standard deviation of chronologies directly indicated that P. crassifolia climate-growth response weakened at higher elevations. Furthermore, tree-ring-climate correlation coefficients, and spatial correlation fields of tree-ring width indices to regional climate factors also significantly decreased at higher elevations, indicating that P. crassifolia climate-growth response at higher elevations was weaker than that at lower elevations. Additionally, response of P. crassifolia recruitment dynamics to changes in temperature decreased with increasing elevation, confirming results from chronology and response analyses that showed that P. crassifolia climate-growth response weakened at higher elevations.
关键词	Tree-ring Altitude Qinghai spruce A consistent slope The Qilian Mountains
学科领域	Environmental Sciences & Ecology; Geology; Water Resources
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111884
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Donggang West Rd 320, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Bo,Chen, Tuo,Wu, Guoju,et al. Qinghai spruce (Picea crassifolia) growth-climate response between lower and upper elevation gradient limits: a case study along a consistent slope in the mid-Qilian Mountains region[J]. 中国科学院西北生态环境资源研究院,2016,75(3).
APA	Wang, Bo.,Chen, Tuo.,Wu, Guoju.,Xu, Guobao.,Zhang, Youfu.,...&Feng, Qi.(2016).Qinghai spruce (Picea crassifolia) growth-climate response between lower and upper elevation gradient limits: a case study along a consistent slope in the mid-Qilian Mountains region.ENVIRONMENTAL EARTH SCIENCES,75(3).
MLA	Wang, Bo,et al."Qinghai spruce (Picea crassifolia) growth-climate response between lower and upper elevation gradient limits: a case study along a consistent slope in the mid-Qilian Mountains region".ENVIRONMENTAL EARTH SCIENCES 75.3(2016).