SHAN Bo1, GAO Li2, XIAO Yan, WANG Zheng2
(1.Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, Hunan Univ,Changsha, Hunan 410082, China;2.China Academy of Forest, Beijing 100091, China; 3.Dept of Civil and Environmental Engineering, Univ of Southern California, Los Angeles, CA90089, USA)