1. Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
2. State Key Laboratory of Efficient Production of Forest Resources, Beijing 100083, China
3. School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China
4. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
5. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China