Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Kunming University of Science and Technology, Yunnan Academy of Forestry and Grassland, Kunming University of Science and Technology, Kunming University of Science and Technology and affiliation not provided to SSRN