1. School of Remote Sensing and Information Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
2. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
3. Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011, China
4. University of Chinese Academy of Sciences, Beijing 100049, China
5. Computer Vision and Remote Sensing, Technical University Berlin, 10623 Berlin, Germany
6. Langfang Natural Resources and Planning Bureau, Langfang 065000, China