1. Bioenergy and Environment Science & Technology Laboratory, College of Engineering, China Agricultural University, Beijing, China
2. Key Laboratory of Clean Production and Utilization of Renewable Energy, Ministry of Agriculture and Rural Affairs, Beijing, China
3. National Center for International Research of BioEnergy Science and Technology, Ministry of Science and Technology, Beijing, China
4. Yantai Institute, China Agricultural University, Yantai, Shandong Province, China