Research Institute of Forest Ecology and Protection Chinese Academy of Forestry Key Laboratory of Forest Ecology and Environment State Forestry Administration Beijing 100091;
P. R. China;
Department of Wildlife Protection;
State Forestry Administration Beijing 100043;
P. R. China;
College of Bioscience and Biotechnology;
Beijing Forestry University;
Beijing 100083;
P. R. China;
Inner Mongolia Forestry Industrial Co. Ltd.;
Yakeshi 022150;
P. R. China;