1. Department of Technology Management and Economics; Division of Environmental Systems Analysis; Chalmers University of Technology; Vera Sandbergs Allé 8 SE-412 96 Göteborg Sweden
2. Department of Space, Earth and Environment; Division of Physical Resource Theory; Chalmers University of Technology; Rännvägen 6B SE-412 96 Göteborg Sweden
3. Development Research Center of the State Council; Zhonghua Dizhi Dasha; Hepingjie 13 Jia 20 100013 Chaoyang, Beijing China