Climatic response of thick leaf spruce (Picea crassifolia) tree-ring width at different elevations over Qilian Mountains, northwestern China

Gou, Xiaohua; Chen, Fahu; Yang, Meixue; Li, J.; Peng, Jianfeng; Jin, Lei

doi:10.1016/j.jaridenv.2004.09.011

Cited by 100 publications

(54 citation statements)

References 11 publications

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“…Our study found a deceasing trend in mean ring width values with increasing elevation, which was frequently observed along altitudinal gradients (Splechtna et al 2000;Gou et al 2005;Wang et al 2005;Di Filippo et al 2007;Liang et al 2010). Mainly because that at high elevations, the tree-ring formation was limited by many factors, such as the low temperature, strong wind exposure, shallow soil with low nutrient availability, and shortened growing season (Di Filippo et al 2007;Liang et al 2010).The relationship between RBAR and elevation also suggested that environmental conditions at higher elevation sites were more stressful for Betula ermanii growth.…”

Section: Discussionsupporting

confidence: 63%

Climatic response of Betula ermanii along an altitudinal gradient in the northern slope of Changbai Mountain, China

Wang¹,

Zhao²,

Gao³

2013

Dendrobiology

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Abstract:The sensitivity of Betula ermanii tree-ring growth to climate variation over an altitudinal gradient was assessed. Betula ermanii forest grows in the northern slope of Changbai Mountain from approximately 1,700 m above sea level (a.s.l.), and forms the upper tree line at nearly 2,100 m a.s.l.. Six study sites were constructed along the altitudinal gradient (1,670 to 2,010 m a.s.l.) and ring-width chronologies of Betula ermanii were built. The mean tree-ring series intercorrelation (RBAR) increased with elevation. In principal component analysis, the first unrotated principle component explained 77.1% of the total variance, indicating the tree-ring growth of Beutla ermanii over the altitudinal gradient was governed by regional climate. Correlation function analysis revealed that the radial growth of Betula ermanii was significantly similar in response to climatic conditions.

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Section: Discussionsupporting

confidence: 63%

Climatic response of Betula ermanii along an altitudinal gradient in the northern slope of Changbai Mountain, China

Wang¹,

Zhao²,

Gao³

2013

Dendrobiology

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“…This result was similar to those of previous studies, in which the temperature of the growing season played an important role in treering growth near the cold high-elevation treeline (Jacoby et al 1985;Zhang and Hebda 2004). However, our results differed from previous studies that showed annual radial increment being further controlled by precipitation and temperature prior to the growing season near the treeline in the central Tianshan Mountains (Wang et al 2005), and that showed spring precipitation as a significant factor for tree growth at high-elevation sites in the central Qilian Mountains (Gou et al 2005).…”

Section: Discussionsupporting

confidence: 64%

Dendroclimatological Investigations of Sea Buckthorn (Hippophae rhamnoides) and Reconstruction of the Equilibrium Line Altitude of the July First Glacier in the Western Qilian Mountains, Northwestern China

Xiao¹,

Hu²,

Kobayashi³

et al. 2007

Tree-Ring Research

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Radial growth characteristics of a high-elevation shrub species, sea buckthorn (Hippophae rhamnoides), were investigated at four sites in a river valley at altitudes ranging from 3,333 to 3,820 m a.s.l. close to the terminus of the July First Glacier in the western Qilian Mountains of northwestern China. Radial growth of the sea buckthorn was significantly and positively correlated with the mean monthly temperature in June of the current growing season. Based on the fact that fluctuations in the shrub's radial growth and the glacier's equilibrium-line altitude (ELA) are affected by climatic variables, a tree-ring width chronology of the four sites was used to reconstruct the ELA from 1950 to 2003. The resulting ELA model explained more than 55.3% of the variance in the ELA of the July First Glacier series. On a decadal time scale, the cumulative-departure curve of the reconstructed ELA series showed an increasing trend from the 1950s to the mid-1960s, followed by a descending trend from the mid-1960s to the mid-1970s. The ELA appears to have remained stable from the mid-1970s to the mid-1990s, but has displayed dramatic variations during the past decade.

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“…A growing number of studies have illustrated that the response of tree growth to climate may change with elevation (e.g., Daniels and Veblen 2004;Gou et al 2005). As indicated by RPC2, a portion of the variance could be attributed to altitude-specific conditions, highlighting the importance of high May temperatures that can trigger early cambial reactivation in evergreen conifers at high elevations (Oberhuber 2004).…”

Section: Discussionmentioning

confidence: 99%

Spatial variability of tree growth along a latitudinal transect in the Qilian Mountains, northeastern Tibetan Plateau

et al. 2010

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Abstract:Little is known about the spatial variability in tree growth and its responses to climate on the Tibetan Plateau; however, such information is essential for improving predictions of forest ecosystem response to climatic change. A network of 16 ring width chronologies was developed along a latitudinal transect in the Qilian Mountains, northeastern Tibetan Plateau. A principal components analysis revealed that the residual chronologies had a positive loading on the first unrotated principal component (PC1). After rotation, PC1 yielded the highest loadings on the driest sites in the northwest and decreased to the south and to the east. PC2 was negatively correlated with altitude. Moisture availability was a dominant limiting factor for tree growth, and this dominance increased northwards and westwards along the precipitation gradient. Loadings of the first two rotated principal components separated the 16 forest sites into three major groups corresponding to the three regions affected by the East Asian Monsoon, Westerlies, and their interaction. Thus, spatial variability in tree growth is an excellent bioindicator of regional climate.Résumé : On connaît peu de choses sur la variation spatiale de la croissance des arbres et de sa réaction au climat sur le plateau tibétain. Toutefois, cette information est nécessaire pour améliorer les prédictions de la réaction des écosystèmes forestiers aux changements climatiques. Un réseau de 16 séries dendrochronologiques a été mis en place le long d'un transect latitudinal dans les monts Qilian, au nord-est du plateau tibétain. Une analyse en composantes principales a révélé que les chronologies résiduelles avaient des valeurs positives le long de la première composante principale sans rotation (CP1). Après rotation, les plus grandes valeurs de la CP1 étaient associées aux stations les plus sèches dans le nord-ouest et les valeurs diminuaient vers le sud et vers l'est. La CP2 était négativement corrélée à l'altitude. La disponibilité en eau était un facteur limitatif dominant pour la croissance des arbres et cette dominance augmentait vers le nord et vers l'ouest le long d'un gradient de précipitations. Après rotation, les deux premières composantes principales ont divisé les 16 stations forestières en trois groupes principaux qui correspondaient aux trois régions influencées par la mousson est-asiatique, les vents d'ouest et leur interaction. Par conséquent, la variation spatiale de la croissance des arbres est un excellent bioindicateur du climat régional.[Traduit par la Rédaction]

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Climatic response of thick leaf spruce (Picea crassifolia) tree-ring width at different elevations over Qilian Mountains, northwestern China

Cited by 100 publications

References 11 publications

Climatic response of Betula ermanii along an altitudinal gradient in the northern slope of Changbai Mountain, China

Climatic response of Betula ermanii along an altitudinal gradient in the northern slope of Changbai Mountain, China

Dendroclimatological Investigations of Sea Buckthorn (Hippophae rhamnoides) and Reconstruction of the Equilibrium Line Altitude of the July First Glacier in the Western Qilian Mountains, Northwestern China

Spatial variability of tree growth along a latitudinal transect in the Qilian Mountains, northeastern Tibetan Plateau

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