1. Faculty of Agriculture and Life Science; Hirosaki University; Hirosaki Japan
2. National Institute of Advanced Industrial Science and Technology; Tsukuba Japan
3. Forestry and Forest Products Research Institute; Tsukuba Japan
4. Faculty of Economics and Management; Surugadai University; Hanno Japan
5. Kyushu Research Center; Forestry and Forest Products Research Institute; Kumamoto Japan
6. Association of International Research Initiatives for Environmental Studies; Taito-ku Japan