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Virtual water trade and time scales for loss of water sustainability: a comparative regional analysis.


ABSTRACT: Assessment and policy design for sustainability in primary resources like arable land and water need to adopt long-term perspective; even small but persistent effects like net export of water may influence sustainability through irreversible losses. With growing consumption, this virtual water trade has become an important element in the water sustainability of a nation. We estimate and contrast the virtual (embedded) water trades of two populous nations, India and China, to present certain quantitative measures and time scales. Estimates show that export of embedded water alone can lead to loss of water sustainability. With the current rate of net export of water (embedded) in the end products, India is poised to lose its entire available water in less than 1000 years; much shorter time scales are implied in terms of water for production. The two cases contrast and exemplify sustainable and non-sustainable virtual water trade in long term perspective.

SUBMITTER: Goswami P 

PROVIDER: S-EPMC4366793 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature

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Virtual water trade and time scales for loss of water sustainability: a comparative regional analysis.

Goswami Prashant P   Nishad Shiv Narayan SN  

Scientific reports 20150320


Assessment and policy design for sustainability in primary resources like arable land and water need to adopt long-term perspective; even small but persistent effects like net export of water may influence sustainability through irreversible losses. With growing consumption, this virtual water trade has become an important element in the water sustainability of a nation. We estimate and contrast the virtual (embedded) water trades of two populous nations, India and China, to present certain quan  ...[more]

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