1. College of Geography and Environmental Science; Northwest Normal University; Lanzhou China
2. College of Geography Science; Inner Mongolia Normal University; Hohhot China
3. State Key Laboratory of Remote Sensing Science; Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences; Beijing China
4. State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics; Institute of Atmospheric Physics Chinese Academy of Sciences; Beijing China
5. College of Resource Environment and Earth Science; Yunnan University; Kunming China
6. College of Global Change and Earth System Science; Beijing Normal University; Beijing China