*Li Han TANG¹、Ching-An Chiu²、Jian-Hong Yang³、Guo-Zhang Michael Song¹ (1.Department of Soil and Water Conservation, National Chung Hsing University, Taichung 402, Taiwan、2.Department of Forestry, National Chung Hsing University, Taichung 402, Taiwan、3.Lienhuachih Research Center, Taiwan Forestry Research Institute, Ministry of Agriculture, Taiwan Forestry Research Institute, Nantou 555, Taiwan)