1. School of Geography and Environment, Liaocheng University, Liaocheng 252059, China
2. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
3. Liaocheng Center of Data and Application of National High Resolution Earth Observation System, Liaocheng 252000, China
4. Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27613, USA
5. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China