Abstract: The canonical correlation analysis was used to describe the influnce of the enviromental factors on the growth characters of Platycladus orientalis stand in mount Qianfe of Ji'nan. Three topography variables, four soil variables and stand density were selected as enviroment factors. Four growth indices i.e.height,DBH,basal diameter and standing stock were regarded as dependent variables. Three pairs of canonical variables which had significant correlation, but had no correlation between them were:(1)Stand density and positive moisture index in soil, diameter (DBH and basaldiameter);(2)Elevation, standing stock caused by innormal growing;(3) The negative moisture index in soil, standing stock caused by normal growing.The conclusion showed that the stand density,the positive moisture in soil and topography were the major factors influencing the growth marked by diameters,and the growth is not sensitive to the exposure,the gradient,the soil texture and the content of organic matter in soil.It showed the characteristics of barren-enduring and higher adaptability for enviroment of Platycladus orientalis.

Key words: Canonical correlation analysis, Platycladus orientalis, Site conditions and growth characters