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| Titel |
Analysis of intra-country virtual water trade strategy to alleviate water scarcity in Iran |
| VerfasserIn |
M. Faramarzi, H. Yang, J. Mousavi, R. Schulin, C. R. Binder, K. C. Abbaspour |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 14, no. 8 ; Nr. 14, no. 8 (2010-08-02), S.1417-1433 |
| Datensatznummer |
250012390
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| Publikation (Nr.) |
 copernicus.org/hess-14-1417-2010.pdf |
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| Zusammenfassung |
| Increasing water scarcity has posed a major constraint to sustain food
production in many parts of the world. To study the situation at the
regional level, we took Iran as an example and analyzed how an intra-country
"virtual water trade strategy" (VWTS) may help improve cereal production
as well as alleviate the water scarcity problem. This strategy calls, in
part, for the adjustment of the structure of cropping pattern (ASCP) and
interregional food trade where crop yield and crop water productivity as
well as local economic and social conditions are taken into account. We
constructed a systematic framework to assess ASCP at the provincial level
under various driving forces and constraints. A mixed-integer,
multi-objective, linear optimization model was developed and solved by
linear programming. Data from 1990–2004 were used to account for yearly
fluctuations of water availability and food production. Five scenarios were
designed aimed at maximizing the national cereal production while meeting
certain levels of wheat self-sufficiency under various water and land
constraints in individual provinces. The results show that under the
baseline scenario, which assumes a continuation of the existing water use
and food policy at the national level, some ASCP scenarios could produce
more wheat with less water. Based on different scenarios in ASCP, we
calculated that 31% to 100% of the total wheat shortage in the deficit
provinces could be supplied by the wheat surplus provinces. As a result,
wheat deficit provinces would receive 3.5 billion m3 to 5.5 billion m3 of virtual water by importing wheat from surplus provinces. |
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