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The Role of Virtual Water Flows in Physical Water Scarcity: The Case of Central Asia

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  • Miina Porkka
  • Matti Kummu
  • Stefan Siebert
  • Martina Flörke

Abstract

Water scarcity in Central Asia was analyzed by using two water scarcity indices at the scale of sub-basin areas (SBAs): water stress index (consumption-to-availability ratio) and water shortage index (water availability per capita). These indices were calculated for a baseline scenario that included virtual water flows, and again for a scenario where international trade was eliminated, thus assessing the role of virtual water flows in water scarcity. Over 80% of the study area population suffers from water stress and approximately 50% from water shortage as well. Removing virtual water flows considerably decreased water scarcity for approximately half the population. Reducing the exports of water-intensive products could thus be an option, along with other more traditional measures, for alleviating water scarcity in Central Asia.

Suggested Citation

  • Miina Porkka & Matti Kummu & Stefan Siebert & Martina Flörke, 2012. "The Role of Virtual Water Flows in Physical Water Scarcity: The Case of Central Asia," International Journal of Water Resources Development, Taylor & Francis Journals, vol. 28(3), pages 453-474.
    • Handle: RePEc:taf:cijwxx:v:28:y:2012:i:3:p:453-474
    DOI: 10.1080/07900627.2012.684310
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    Cited by:

    1. Miina Porkka & Matti Kummu & Stefan Siebert & Olli Varis, 2013. "From Food Insufficiency towards Trade Dependency: A Historical Analysis of Global Food Availability," PLOS ONE, Public Library of Science, vol. 8(12), pages 1-12, December.
    2. Shuang Liu & Geping Luo & Hao Wang, 2020. "Temporal and Spatial Changes in Crop Water Use Efficiency in Central Asia from 1960 to 2016," Sustainability, MDPI, vol. 12(2), pages 1-18, January.
    3. Dong Yan & Zhiwei Jia & Jie Xue & Huaiwei Sun & Dongwei Gui & Yi Liu & Xiaofan Zeng, 2018. "Inter-Regional Coordination to Improve Equality in the Agricultural Virtual Water Trade," Sustainability, MDPI, vol. 10(12), pages 1-17, December.

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