1. United Graduate School of Agricultural Sciences, Iwate University, Morioka 020-8550, Japan
2. Agri-Innovation Center, Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan
3. Geo Forest Co., Ltd., Minamiminowa 399-4511, Japan
4. Forestry and Forest Products Research Institute, Tsukuba 305-8687, Japan