Affiliation: | 1.The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing, 100083, People’s Republic of China ;2.Academy of Forestry Inventory and Planning, State Forestry Administration, Beijing, 100714, People’s Republic of China ;3.School of Economics and Management, Ningxia University, Yinchuan, 750021, Ningxia, People’s Republic of China ; |