School of Natural Resources, University of Missouri-Columbia, 203 Anheuser-Busch Natural Resources Building, Columbia, MO 65211-7270, USA;
Department of Forestry and Natural Resources, Purdue University, 195 Marsteller Street,West Lafayette, IN 47907-2033, USA;
中国科学院沈阳应用生态研究所,沈阳,110016;
School of Environment, Resources and Development, Asian Institute of Technology, P.O.Box 4, Klong Luang, Pathumthani 12120, Thailand;