[1] College of Geography and Environmental Science, Northwest Normal University, Lanzhou,730070, China
[2] School of Geography and Planning, Sun Yat-Sen University, Guangzhou,510006, China
[3] Key Laboratory of Resource Environment and Sustainable Development of Oasis, Lanzhou,730070, China
[4] Institute of Urban and Rural Development and Collaborative Governance of Northwest, Lanzhou,730070, China
[5] Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-Sen University, Guangzhou,510006, China
[6] Guangdong Provincial Engineering Research Center for Public Security and Disaster, Guangzhou,510006, China