1. Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing, China
2. Key Laboratory of Forestry Remote Sensing and Information System, NFGA, Beijing, China
3. School of Information Technology and Engineering, Guangzhou College of Commerce, Guangzhou, China
4. School of Geography, University of Leeds, Leeds, UK
5. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China
6. Shandong Geographical Institute of Land Spatial Data and Remote Sensing Technology, Jinan, China