A PRELIMINARY STUDY ON THE CLIMATIC CHANGE OF THE HENGDUAN MOUNTAINS AREA SINCE 1600 A.D.

Based on twelve tree-ring chronologies, two curves including the fluctuations of air temperature and the annual precipitation during last hundreds of years in the Hengduan Mountains area are drawn. Some significant cold/warm and dry/wet periods could be identified. A combined analysis between dendrochronologies and historical literature data of five classes helps us understand successive variations of each climatic pattern since 1600 A.D. In addition, the periodicities of some climatic features in the area have been studied in this paper.