1. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing, China
2. Center for Statistical Genetics, Pennsylvania State University, Loc T3436, Mailcode CH69, 500 University Drive, Hershey, PA USA
3. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague 6- Suchdol, Czech Republic
4. College of Forestry, Central South University of Forestry and Technology, 498 Shaoshan Nanlu, Changsha, Hunan, China
5. College of Computer and Information Techniques, Xinyang Normal University, Xinyang, Henan Province, China
6. Academy of Forest Inventory and Planning of Jilin Province, Changchun, Jilin, China