1. Guangxi Key Laboratory of Forest Ecology and Conservation, Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, College of Forestry, Guangxi University, Nanning 530004, China
2. Guangxi Youyiguang Forest Ecosystem Research Station, Pingxiang 532600, China
3. Experimental Centre of Tropical Forestry, Chinese Academy of Forestry, Pingxiang 532600, China