The potential of System Dynamics Modelling in assessing global water-energy-food security issues

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Courtesy of IWA Publishing

Water security and interconnected issues are gaining awareness in various international arenas, highlighted by publications investigating aspects of water budgets, availability, scarcity and trade [1-3]. Many of the world's freshwater sources are over-exploited [4-5]. This situation is likely to become exacerbated as population increases (to c. 9-11 billion by 2050; [6]), as per-capita water demand increases, particularly in developing nations [7] and as climate change impacts take effect [8], tending to reduce the overall water supply. Understanding water availability is critical, especially when it is considered that today, over 1 billion people lack access to clean drinking water, and 2.5 billion lack access to proper sanitation.

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