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Changes in water use efficiency and water footprint in grain production over the past 35 years: a case study in the North China Plain

Water Use EfficiencyPrecision AgricultureEngineeringWater ResourcesAgricultural Water ManagementWater ScarcityAgricultural EconomicsWater ManagementWater QualityNorth China PlainWater ConsumptionWater FootprintingWater Footprint