1. Institute of Big Data and Artificial Intelligence, Southwest Forestry University, Kunming, China
2. School of Mathematics and Statistics, Henan University, Kaifeng, China
3. Key Laboratory of National Forestry and Grassland Administration on Forestry and Ecological Big Data, Southwest Forestry University, Kunming, Yunnan, China
4. Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, China
5. Art and Design College, Southwest Forestry University, Kunming, Yunnan, China