1. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
2. Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA
3. Faculty of Artificial Intelligence in Education, Central China Normal University, Wuhan, China
4. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
5. Department of Geology and Geography, West Virginia University, Morgantown, WV, USA