1. Key Laboratory of Geographic Information Science, Ministry of Education, and School of Geographical Sciences, East China Normal University Shanghai PR China
2. School of Geography & the Environment University of Oxford Oxford UK
3. School of Geography, Archaeology and Environmental Studies University of the Witwatersrand Johannesburg South Africa
4. College of Environment and Planning Henan University Kaifeng PR China
5. School of Resource & Environment Science Wuhan University Wuhan China