1. Research Institute of Biology and Agriculture, University of Science and Technology Beijing, Beijing 100024, China
2. Environmental Economics and Natural Resources Group, Wageningen University & Research, Wageningen 6706 KN, The Netherlands
3. Academy of National Food and Strategic Reserves Administration, Beijing 100037, China
4. Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA