10:00 AM - 10:15 AM
*Takuya Manaka1, Tsuyoshi Yamada1, Kimihiro Kida2, Toru Ujiie3, Mitsuru Yamamura3, Tsutomu Sato4 (1.Department of Forest Soils, Forestry and Forest Products Research Institute, 2.Tohoku Research Center, Forestry and Forest Products Research Institute, 3.Japan Conservation Engineers Co., Ltd., 4.Faculty of Engineering, Hokkaido University)