[2] CHAPAGAIN A K, HOEKSTRA A Y, SAVENIJE H H G et al. The water footprint of cotton consumption: An assessment of the impact of worldwide consumption of cotton products on the water resources in the cotton producing countries[D]. Ecological Economics, 60, 186-203(2006).

[3] GERBENS L W, HOEKSTRA A Y. The water footprint of sweeteners and bio-ethanol[D]. Environment International, 70, 749-758(2011).

[4] ALDAYA M M, ERCIN A E, HOEKSTRA A Y. Corporate water footprint accounting and impact assessment: The case of the water footprint of a sugar-containing carbonated beverage[D]. Water Resource Management, 25, 721-741(2011).

[5] CHAPAGAIN A K, HOEKSTRA A Y, MEKONNEN M M et al. Global monthly water scarcity: Blue water footprints versus blue water availability[D]. Plos One, 7, 632-688(2012).

[6] GOLDSMITH S, JENERETTE G D, WU W L et al. Contrasting water footprints of cities in China and the United States[D]. Ecological Economics, 57, 346-358(2006).

[7] HOEKSTRA A Y, MEKONNEN M M. A global assessment of the water footprint of farm animal products[D]. Ecosystems, 15, 401-415(2012).