1. School of Computer Science, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science and Technology, Nanjing, China
2. School of Computer Science, Nanjing University of Information Science and Technology, Nanjing, China
3. School of Computer Engineering, Nanjing University of Science and Technology, Nanjing, China
4. Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing, China