1. Institute of Dunhuang Studies, School of History & Culture, Lanzhou University, Lanzhou, People’s Republic of China
2. Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environment Science, Yunnan University, Kunming, People’s Republic of China
3. Ministry of Education Key Laboratory of Western China’s Environmental System, College of Earth & Environmental Sciences, Lanzhou University, Lanzhou, People’s Republic of China
4. Gansu Provincial Institute of Cultural Relics and Archaeology, Lanzhou, People’s Republic of China
5. Institution of Chinese Agricultural Civilization, Nanjing Agricultural University, Nanjing, People’s Republic of China
6. School of Geomatics, Anhui University of Science and Technology, Huainan, People’s Republic of China