1. School of Architecture and Design, Harbin Institute of Technology, Harbin 150001, China
2. Key Laboratory of National Territory Spatial Planning and Ecological Restoration in Cold Regions, Ministry of Natural Resources, Harbin 150001, China
3. School of Art and Archaeology, Hangzhou City University, Hangzhou 310015, China
4. Department of Geography, Faculty of Social & Historical Sciences, University College London, London WC1E 6BT, UK