1. Forestry and Forest Products Research Institute, Hokkaido Research Center, Sapporo, Japan
2. Hokkaido Research Organization, Forestry Research Institute, Bibai, Japan
3. Faculty of Science, Shinshu University, Matsumoto, Japan
4. School of Human Science and Environment, University of Hyogo, Himeji, Japan
5. Department of Applied Chemistry and Bioscience, Chitose Institute of Science and Technology, Chitose, Japan
6. Forestry and Forest Products Research Institute, Tsukuba, Japan
7. Field Science Center for Northern Biosphere, Hokkaido University, Horonobe, Japan