D iurna l Change of Photosynthetic Character istics and Response to L ightIntensity of P inus kesiya Royle ex Gordon var. langbianensis COMPOSITION, SPATIAL DISTRIBUTION AND SURVIVAL DURING THE DRY SEASON OF TREE SEEDLINGS IN A TROPICAL FOREST IN XISHUANGBANNA, SW CHINA Soil Respiration under Three Landuse Categories of Mountainous Region in Xishuangbanna, Yunnan Variations of whole-tree transpiration at different diameter-classes in Acacia mangium during dry and wet seasons Relationship between Activity of Ceratosolen fusciceps and Seasonal Changes of the Seed Number of Ficus racemosa The spatial characteristics of air temperature in canopy gap in a tropic secondary forest in Xishuangbanna Stock Sap Flow Characters of Juglans reg ia and Relationship withM eteorological Factors in Dry Season CANONICAL CORRELATION ANALYSIS OF METEOROLOGICAL FACTORS ON DRY SEASONAL SOIL WATER CONTENT DYNAMICS IN EUCALYPTUS PLANTATION ON LEIZHOU PENINSULA OF CHINA