1. Key Lab of Biomass Energy and Material, Jiangsu Province; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province; Key Lab of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Lab for Biomass Chemical Utilization; Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, P. R. China
2. College of Science, Nanjing Forestry University, Nanjing 210037, P. R. China