1. College of Computer and Information Technology, Xinyang Normal University, Xinyang 464000, China
2. Henan Dabieshan National Field Observation and Research Station of Forest Ecosystem, Zhengzhou 450046, China
3. Xinyang Academy of Ecological Research, Xinyang 464000, China
4. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China
5. College of Mathematics and Statistics, Xinyang Normal University, Xinyang 464000, China
6. College of Tourism, Xinyang Normal University, Xinyang 464000, China