Luan Xiaoboa, Sun Shikuna, Wang Yubaoa
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, China
In shallow groundwater buried areas, considering the direct utilization of groundwater by crops, a SWAT-MODFLOW coupling model was established to analyze the hydrological cycle process of irrigated areas, analyze the hydrological factors related to agricultural production, and construct a regional scale crop production water footprint quantization method based on SWAT-MODFLOW, it is found that: 1) This method can comprehensively simulate crop water use process in shallow groundwater area and quantify crop water footprint, which is an extension and improvement of crop water footprint quantification method; 2) The water circulation in the Hetao is mainly vertical, and the horizontal movement of groundwater is relatively small through ET, irrigation and precipitation supplement, and irrigation leakage plays an important role in maintaining the ecological environment of the irrigation area; 3) The water footprint hotspots of three crops were found in Hetao, which was helpful to improve the water resource management capacity of irrigation district.