1. Institute of Planning Research, Agricultural Economics and Rural Development, Tehran, Iran
2. Department of Economics and Rural Development, Gembloux Agro-Bio Tech, University of Liège, Gembloux, Belgium
3. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
4. College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
5. Institute of Economics and Social Sciences, Estonian University of Life Sciences, Tartu, Estonia
6. Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, China
7. Sino-Belgian Joint Laboratory for Geo-Information, Urumqi, China
8. University of Chinese Academy of Sciences, Beijing, China