1. U. I. Ahmed:
College of Economics and Management, Huazhong Agricultural University, Wuhan, Hubei Province, China; University College of Agriculture, University of Sargodha, Sargodha, Pakistan
2. L. Ying:
College of Economics and Management, Huazhong Agricultural University, Wuhan, Hubei Province, China
3. M. K. Bashir:
Institute of Agricultural and Resource Economics, University of Agriculture, Faisalabad, Pakistan;Agriculture Policy, USPCAS-AFS, University of Agriculture, Faisalabad, Pakistan
4. M. Abid:
Research group Climate Change and Security, Institute of Geography, University of Hamburg, Grindelberg, Germany
5. E. Elahi:
College of Economics and Management, China Agricultural University, Beijing, China
6. M. A. Iqbal:
College of Economics and Management, Huazhong Agricultural University, Wuhan, Hubei Province, China