1. Virtual Water and Water Footprints in a Global Perspectives
... a scarcity of water use the concept of 'virtual water' to determine their agricultural and industrial production strategies. The concept of water footprint was introduced in 2002 by A.Y. Hoekstra as an alternative indicator of water use. A water footprint consists of three components: the blue, green and gray water footprint. ... and ground water. The green water footprint is the volume of water evaporated from the global green water resources coming under rainwater stored in the soil as soil moisture. The gray water footprint is the volume of the water that becomes polluted during the ...
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