A Study of Climate Regionalization and Application of Phoebe zhennana in Sichuan

Phoebe zhennan is the precious broad-leaved timber species in the Sichuan Basin.Because of its long growth cycle,relative to other fast-growing timber species,its artificial cultivation and development are mostly done in spots at "Four Sides".Based on the requirements to ecological conditions and geographical distribution of Phoebe zhennan in Sichuan,the cultivated regions of Phoebe zhennan were divided into four divisions by use of cluster analysis of 38 stations and 9 climatic parameters,namely the most suitable zone(Ⅰ),suitable zone(Ⅱ),less suitable zone(Ⅲ) and fringe zone(Ⅳ).The most suitable zone and suitable zone were the main production area of Phoebe zhennan in Sichuan.