Effects of Seabuckthorn on Tree Growth and Biomass Production Poplar Plantations in a in a Subhumid-arid Area of China THE BIOMASS PSODUCTIVITY AND WOOD QUALITY OF EASTERN COTTONWOOD IN MINIROTATION MANAGEMENT SYSTEMS Biomass formation for switchgrass (Panicum virgatum) in the semiarid loess hilly-gully regions A FUNCTIONAL-STRUCTURAL MODEL GREENLAB FOR PINUS TABULAEFORMIS Response of biomass production to human impacts in a pine forest in subtropical China Effects of Rotation Length and Repeated Harvesting on the Sprouting Reproduction of Acacia auriculiformis EFFECTS OF SIMULATED NITROGEN DEPOSITION ON BIOMASS PRODUCTION AND ALLOCATION IN SCHIMA SUPERBA AND CRYPTOCARYA CONCINNA SEEDLINGS IN SUBTROPICAL CHINA Above Ground Biomass Production and Nutrient Cycling of Middle age Plantation of Acacia mangium