1. School
of Renewable Natural Resources, Louisiana State University AgCenter, Baton
Rouge, Louisiana 70803, United States
2. Southern
Regional Research Center, USDA Agricultural Research Service, New Orleans, Louisiana 70124, United States
3. Department of Environment & Forest Resources Science Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
4. Henan Key Laboratory of Biomass Energy, Zhengzhou, Henan 450008, China