1. Institute of Forest Science, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Republic of Korea;
2. Department of Forest Management, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, Republic of Korea;
3. Department of Forestry, Ministry of Agriculture and Forestry, Vientiane, Laos;
4. Forestry Administration, Phnom Penh, Cambodia