Climate Change Research ›› 2013, Vol. 9 ›› Issue (4): 252-257.doi: 10.3969/j.issn.1673-1719.2013.04.003

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Variations of June Air Temperature Derived from Tree-Ring Records in 1713-2010 in Jinchuan, West Sichuan Plateau, China

Xiao Dingmu1, 4, Qin Ningsheng1, 2, 3, Li Jinjian3, Li Yuanyuan3   

  1. 1 School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China; 
    2 Chengdu Institute of Plateau Meteorology, China Meteorological Administration, Chengdu 610072, China; 
    3 Agrometeorological Center of Sichuan Province, Chengdu 610072, China; 
    4 Sichuan Provincial Meteorological Office, Chengdu 610072, China
  • Received:2012-11-16 Revised:2013-04-01 Online:2013-07-30 Published:2013-08-07

Abstract: Tree-ring width of Picea schrenkiana sampled at Jinchuan and its response to climate change were analyzed. Correlation analysis indicates that the tree-ring chronology and the June mean air temperature at Jinchuan station in the West Sichuan Plateau was significantly correlated. The June mean air temperature series of 1713-2010 at Jinchuan was well reconstructed. Its reliability was substantiated by the leave-one-out method. According to the reconstructed temperature series, the June mean air temperature over the period was 18.2℃. The reconstructed series contained three warm periods: 1825-1839, 1854-1892 and 1951-1961, as well as four cold periods: 1792-1804, 1842-1853, 1864-1893 and 1911-1924. Power spectrum analysis and wavelet analysis show that the series had variation periods of 2-3, 7-8, 20-30, 32-64 and 70-130 years.

Key words: West Sichuan Plateau, tree-ring width, climatic reconstruction, mean air temperature

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