1. New Brunswick Department of Natural Resources, Island View, NB E3E 1G3, Canada.
2. Ontario Forest Research Institute, 1235 Queen E, Sault Ste. Marie, ON P6A 2E5, Canada.
3. College of Forestry, Beihua University, 3999 Huashan Rd, Jieling City, 132013, China.
4. Faculty of Forestry and Environmental Management, University of New Brunswick, Fredericton, NB E3B 6C2, Canada.