DOI: 10.3354/cr01271
Scopus记录号: 2-s2.0-84922450453
论文题名: Dendroclimatic reconstruction of temperature in the eastern Qilian Mountains, northwestern China
作者: Gao L. ; Gou X. ; Deng Y. ; Yang M. ; Zhang F. ; Li J.
刊名: Climate Research
ISSN: 0936577X
出版年: 2015
卷: 62, 期: 3 起始页码: 241
结束页码: 250
语种: 英语
英文关键词: Northwest China
; Picea crassifolia
; Temperature reconstruction
; Tree-ring
; Warming trend
Scopus关键词: climate variation
; coniferous tree
; dendroclimatology
; temperature effect
; tree ring
; twentieth century
; China
; Qilian Mountains
; Qinghai-Xizang Plateau
; Picea crassifolia
英文摘要: Understanding the extent to which climate has varied in the past is a prerequisite to assessing current trends. In this study, we present a 225 yr tree-ring width record of Qinghai spruce Picea crassifolia from a mesic site in the eastern Qilian Mountains of northwest China. This tree-ring record showed significant positive correlations (p <0.05) with temperature for most months from the preceding May to the current September, but none with precipitation or the Palmer Drought Severity Index. Based on the correlation relationships, we developed a regression model to reconstruct the average July temperatures over the period AD 1785-2009, which accounted for 45% of the observed temperature variation during the calibration period (1957-2009). This is the first tree-ring based temperature reconstruction in the eastern Qilian Mountains. The reconstruction indicated a warming trend that began around 1900 and continued through the late 20th century. Eight of the 10 warmest years were recorded during the period 1990-2009. The longest cool period occurred in 1894-1916. Comparisons of our reconstruction with other independent tree-ring based temperature reconstructions from the northeastern Tibetan Plateau suggest coherent variance patterns in these warm season temperature reconstructions regardless of the positive or negative correlation relationships between tree-ring records and temperatures. The results of comparisons also indicated that the warm season tem-perature variances lag behind the winter temperature variability by about 20 yr in this region. © Inter-Research 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116510
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Gao L.,Gou X.,Deng Y.,et al. Dendroclimatic reconstruction of temperature in the eastern Qilian Mountains, northwestern China[J]. Climate Research,2015-01-01,62(3)