1. College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China
2. Forest and Grassland Comprehensive Monitoring Division II, East China Institute of Forestry and Grassland Survey and Planning, State Forestry and Grassland Administration, Hangzhou 310019, China
3. School of Environmental Science, Nanjing Xiao Zhuang University, Nanjing 211171, China