Wenquan, Niu, 1. Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Yangling 712100, Shaanxi, China; 3. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China;
4. Institute of Water-saving Agriculture in Arid Areas of China (IWSA), Northwest A&F University, Yangling 712100, Shaanxi, China, China
