*Ako YAMAMOTO¹, Yuki Kanemaru², Ryunosuke Matsunaga³, Takayuki Minamino³, Tsuyoshi Tada², yo Fukutani³, Yoshinori Shigihara² (1.Forest of Research and Management Organization Forestry and Forest Products Research Institute, 2.National Defense Academy, 3.Kanto Gakuin University)