1. a Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, School of Geographical Sciences, Fujian Normal University, Fuzhou, China
2. b Key Laboratory for Subtropical Mountain Ecology, School of Geographical Sciences, Fujian Normal University, Fuzhou, China
3. c Department of Geography, University of Portsmouth, Portsmouth, United Kingdom
4. d State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
5. e College of Geomatics, Shandong University of Science and Technology, Qingdao, China
6. f College of Geomatics, Xi’An University of Science and Technology, Shanxi, Xi’an, China
7. g School of Urban and Environmental Science, Huaiyin Normal University, Huai’an, China