Abstract
A comprehensive and objective understanding of the amount of water resources occupied by human activities is an important way to improve the existing water resources management. The theory of virtual water is a brand-new concept proposed at the end of the 20th century to solve the problems of water resource shortage and water resource security. Based on a brief analysis of virtual water and its related concepts, this paper introduces the research status of related theories at home and abroad, discusses from the perspectives of water footprint, virtual water quantitative calculation, virtual water trade, virtual water strategy, etc., and points out that virtual water plays a vital role in maintaining regional peace. Stabilizing and promoting regional economic development is of great significance. It also examines the imperfections in the existing theories of virtual water and looks forward to the future research directions of virtual water.
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