1. College of Geography and Tourism, Hunan University of Arts and Science, Changde, China
2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
3. School of Earth Sciences, Lanzhou University; Key Laboratory of Mineral Resources in Western China, Lanzhou, Gansu, China
4. Development Research Center, China Geological Survey, Beijing, China
5. Technology Innovation Center of Geological Information, MNR, Beijing, China
6. School of Resources and Environment, Xingtai University, Xingtai, Hebei, China