1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
2. University of Chinese Academy of Sciences, Beijing, China
3. Research Group Climate Change and Security, Institute of Geography, Center for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany
4. Research Unit Sustainability and Global Change, Center for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany
5. Graduate School of Human Development in Landscapes, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
6. Institute for Peace Research and Security Policy at the University of Hamburg, Hamburg, Germany