1. School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 34100, China
2. Guangdong Institute of Resources Comprehensive Utilization, Guangzhou, Guangdong 510650, China
3. Hunan Academy of Forestry, Changsha, Hunan 410004, China
4. School of Chemical Engineering, The University of Queensland, St Lucia, 4072 Queensland Australia