Temperature reconstruction from tree-ring maximum density of Balfour spruce in eastern Tibet, China
作者: |
L. Wang, J. P. Duan, J. Chen, L. Huang and X. M. Shao |
期刊名称: |
International Journal of Climatology |
发表年度: |
2010 |
卷: |
30 |
期: |
7 |
联系作者: |
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页码: |
972-979 |
摘要: |
Wood from Balfour spruce [Picea likiangensis var. balfburiana (Rehd. et Wils.)] was collected at three sites in eastern Tibet. Maximum latewood densities (MXD) were measured by X-ray densitometry; individual series were first cross dated and then combined to form a standard chronology. This chronology was significantly correlated with late summer temperatures on the eastern Tibetan Plateau. It was used to reconstruct the August-September mean temperature for the period 1695-2000 A.D., and it explained the 63.5% of the total temperature variance. Wavelet analysis of the reconstructed temperature series suggested the existence of a 20-year climatic cycle during the period 1800-1860 and a similar to 50-year cycle at the beginning of the twentieth century. Copyright (C) 2009 Royal Meteorological Society
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