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| DOI：10.13522/j.cnki.ggps.2020999 |
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| Integrative Management of Physical Water and Virtual Water to Ensure National Food Security |
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WU Pute.
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Northwest Agricultural and Forestry University, Yangling 712100, China
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| Abstract: |
| The double whammy in Chinese agricultural production is the sustained water resources shortage and the change in concern over food production that has shifted from food security to the ways the food is produced. Improving integrative management of physical water and virtual waters is urgently needed to resolve these issues. This paper analyzed current situation and the outstanding problems in grain production and water resources utilization in China, and proposed that the key to achieve integrative management of physical and virtual waters is to develop process-hydrology based on the theory of coupled flow of the physical and virtual waters. This paper reviews the research results of our group over the past five years in process-hydrology in grain production and consumption systems in China. It highlights three areas required to construct applicable theory and methods for integrative management of physical and virtual water resources: ① breaking the technical and methodological barriers excising in integrative management of physical and virtual water, and refining and resolving key scientific issues in process-hydrology in grain production system; ② addressing efficient utilization of water resources in the whole industrial chains, improving reform of the system and its underlying mechanisms, and implementing virtual water management; ③ strengthening training and support of specialists in physical and virtual water management. |
| Key words: coupled flow of physical and virtual water; food security; process hydrology; whole industry chain; integrative management |
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