1. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity; Northwest University; Xi'an, 710127 China
2. College of Urban and Environmental Sciences; Northwest University; Xi'an, 710127 China
3. College of Agronomy; Northwest A&F University; Yangling, 712100 China
4. Shaanxi Land Construction Group; Shaanxi LCG Land Project Technology Institute, Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Land and Resources of China; Xi'an, 710075 China