1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, China
2. Department of Geosciences, University of Arkansas, Fayetteville, AD, USA
3. Department of Geomatics Engineering, Istanbul Technical University, Istanbul, Turkey
4. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
5. School of Emergency Management, Xihua University, Chengdu, China