1. Assistant Professor, School of Economics, Zhejiang University of Technology, 288 Liuhe Road, Hangzhou 310023, China P.R.
2. Assistant Professor, State Key Laboratory of Grassland Agro-ecosystems; College of Pastoral Agriculture Science and Technology, Lanzhou University, 222 Tianshui Road, Lanzhou 730000, China P.R.
3. Professor, China Academy for Rural Development (CARD), School of Public Affairs, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China P.R.
4. Researcher, Institute of Food and Nutrition Development, Ministry of Agriculture, No. 12 Zhongguancun South St., Haidian District, Beijing 100081, China P.R.