Affiliation: | 1.College of Economics and Management, Northwest A&F University, Yangling, 712100, China ;2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China ;3.School of Resources and Environmental Sciences, Wuhan University, Wuhan, 430079, China ;4.The school of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China ; |