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STUDIES ON PLANT COMMUNITY DIVERSITY IN DONGLINGSHAN MOUNTAIN,BEIJING,CHINA Ⅸ.THE INFLUENCE OF SCALE ON α DIVERSITY Study on Dividing the Ecological Benefit Region of Hubei Province with GIS Technology Species Diversity and Floristic Characteristics of Vascular Plants in Nanji Island, Zhejiang Provience DETERMINING RESIN LOVERAGE AND RESIN AMOUNT ON WOOD CHIP SURFACES Root Hydraulic Lift and Nutrition Activity in Astraglus adsurgens with Fertilization Species Diversity and Floristic Characteristics of Vascular Plants in Nanji Island, Zhejiang Provience A NUMERICAL ANALYSIS ON THE DIVIDING LINE OF GEOGRAPHIC DISTRIBUTION AND TAXONOMY RELATION BETWEEN PINUS HENRYI MAST. AND PINUS TABULAEFORMIS CARR.