1. Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical Sciences, Southwest University, Chongqing, People’s Republic of China
2. Key Laboratory of Virtual Geographic Environment (Ministry of Education), Nanjing Normal University, Nanjing, People’s Republic of China
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, Jiangsu, People’s Republic of China