1. Field Scientific Observation and Research Base of Ministry of Land and Resources, School of Surveying and Land Information Engineering; Henan Polytechnic University; Jiaozuo Henan Province China
2. Ministry of Agriculture Key Lab for Crop Water Requirement and Regulation, Farmland Irrigation Research Institute; Chinese Academy of Agricultural Sciences; Xinxiang Henan Province China
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Ministry of Water Resources/Institute of Soil and Water Conservation; Chinese Academy of Sciences; Yangling Shaanxi Province China