AN APPLICATION OF CLUSTERING ANALYSIS IN FOREST SITE CLASSIFICATION AND EVALUATION CULTURAL DISTRIBUTION AND SITE CLASSIFICATION FOR CAMELLIA OLEIFERA OPINIONS ON CHINA FOREST SITE CLASSIFICATION AND EVALUATION ON THE BASIC PRINCIPLES OF FOREST SITE CLASSIFICATION Individual tree biomass model by tree origin, site classes and age groups DISCUSSION ON ESTABLISHMENT OF THE FOREST SITE CLASSIFICATION SYSTEM IN CHINA Classification of Forest Site System in China Site Evaluation of Chinese Fir and Its Application in Hengyang Area