1. School of Architecture and Design, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
2. School of Architecture, Clemson University, Clemson, SC 29631, USA
3. School of Architecture, Cornell University, Ithaca, NY 14853, USA
4. Faculty of Forestry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
5. Shanghai Landscape Architecture Design and Research Institute Co., Ltd., Shanghai 200031, China