Relationships Between Tree-–ring and Climate in Changji Region of the Middle of the Tianshan

The simple correlation and multiple correlation between the tree-ring chronologies at 6 locations in Changji region of the middle of the Tianshan, and mean temperatures and total precipitations for the growing season at 5 climatic stations around the tree-rings sampled have been analysed. Both data sets are subjected to a canonical correlation analysis. The results show that the two data sets are significantly correlated at the 99.5% confidence level. The correlation between the tree-ring index and the temperature is negative and the correlation between the index and the precipitation is positive in arid and semi-arid Changji region. Also, the one year lag correlation is more significant than the concurrent year correlation. This would probably provide a basis for reconstructing regional climate from tree-ring evidence.