[Li, Jianjun;Yang, Tingdong;Huang, Jing] Cent South Univ Forestry & Technol, Coll Comp Sci & Informat Technol, Changsha 410004, Hunan, Peoples R China.^[Zhang, Huaiqing;Li, Yongliang] Chinese Acad Forest, Res Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China.