Affiliation: | 1. Department of Environmental Science, Policy, and Management, 130 Mulford Hall #3114, University of California, Berkeley, CA 94720-3110, USA;2. School of Engineering, 5200 North Lake Rd., University of California, Merced, Merced, CA 95343, USA;1. College of Resources Environment and Tourism, Capital Normal University, Beijing 100048, China;2. Department of Geography, The State University of New York at Buffalo, 105 Wilkeson Quad, Buffalo, NY 14261, USA |