1. Ecosystems and Landscape Evolution, Department of Environmental Systems Science ETH Zürich Universitätstrasse 16 8092 Zürich Switzerland
2. Ecosystems and Landscape Evolution, Land Change Science Research Unit Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) Zürcherstrasse 111 8903 Birmensdorf Switzerland
3. Dynamic Macroecology, Land Change Science Research Unit Swiss Federal Institute for Forest, Snow, and Landscape Research (WSL) Zürcherstrasse 111 8903 Birmensdorf Switzerland
4. Earth Surface Dynamics, Department of Earth Sciences ETH Zürich Sonneggstrasse 5 8092 Zürich Switzerland
5. Department of Mathematics, Seminar for Statistics ETH Zürich Rämistrasse 101 8092 Zürich Switzerland
6. Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences Peking University Beijing 100871 China