1School of Geography and Tourism, Anhui Normal University, Wuhu 241000, Anhui, China
2State Environmental Protection Key Laboratory of Satellite Remote Sensing, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China
3University of Chinese Academy of Sciences, Beijing 100049, China
4Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China
5School of Information Engineering, Kunming University, Kunming 650214, Yunnan, China