MODELING SEASONAL VARIATION OF CO2 FLUX IN A SUBTROPICAL CONIFEROUS FOREST USING THE EALCO MODEL DROUGHT EFFECTS ON CARBON EXCHANGE IN A SUBTROPICAL CONIFEROUS PLANTATION IN CHINA Response of soil microorganism and soil enzyme activity to understory plant removal in the subalpine coniferous plantation of western Sichuan Community characteristics and soil properties of coniferous plantation forest monocultures in the early stages after close-to-nature transformation management in southern subtropical China Adaptation of leaf anatomical characteristics of eleven understory species to different environments in coniferous plantations Responses of Bird Communities to Restoration of Coniferous Plantations in a Previous Degraded Forest Ecosystem