Supplementary material to "A high-resolution gridded dataset of water footprints for China's major food crops from 2001 to 2020"

Methods 10 S1.1 Irrigation water useFor irrigation water use ( ), the data primarily comes from the dataset by Zhou Feng et al. (2020), which covers irrigation water use at the municipal level from 2001 to 2013.Irrigation is modeled as the ratio of to irrigation efficiency (), limited by freshwater availability allocated to irrigation sector () as well