1. College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing, People’s Republic of China
2. Research Center for Soft Energy Science, Nanjing University of Aeronautics and Astronautics, Nanjing, People’s Republic of China
3. Department of Land Management, Huazhong Agricultural University, Wuhan, People’s Republic of China
4. School of Economics and Management, Tianjin Chengjian University, Tianjin, People’s Republic of China