1. Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Science Anwai, Beijing China
2. China Center for Agricultural Policy, School of Advanced Agricultural Sciences Peking University Haidian District, Beijing China
3. University of Chinese Academy of Sciences Shijingshan District, Beijing USA
4. Collaborative Innovation Center for Beijing‐Tianjin‐Hebei Integrated Development Hebei University of Economics and Business Shijiazhuang China
5. Rural Development Institute Chinese Academy of Social Sciences Beijing China
6. Department of Agricultural Economics and Agribusiness University of Arkansas Fayetteville Arkansas USA