1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, People’s Republic of China
2. Arid Land Research Center, Tottori University, Tottori, Japan
3. School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen, People’s Republic of China
4. Information Center, Ministry of Environmental Protection of the People’s Republic of China, Beijing, People’s Republic of China