Global unsustainable virtual water flows in agricultural trade. (22nd October 2019)
- Record Type:
- Journal Article
- Title:
- Global unsustainable virtual water flows in agricultural trade. (22nd October 2019)
- Main Title:
- Global unsustainable virtual water flows in agricultural trade
- Authors:
- Rosa, Lorenzo
Chiarelli, Davide Danilo
Tu, Chengyi
Rulli, Maria Cristina
D'Odorico, Paolo - Abstract:
- Abstract: Recent studies have highlighted the reliance of global food production on unsustainable irrigation practices, which deplete freshwater stocks and environmental flows, and consequently impair aquatic ecosystems. Unsustainable irrigation is driven by domestic and international demand for agricultural products. Research on the environmental consequences of trade has often concentrated on the global displacement of pollution and land use, while the effect of trade on water sustainability and the drying of over-depleted watercourses has seldom been recognized and quantified. Here we evaluate unsustainable irrigation water consumption (UWC) associated with global crop production and determine the share of UWC embedded in international trade. We find that, while about 52% of global irrigation is unsustainable, 15% of it is virtually exported, with an average 18% increase between year 2000 and 2015. About 60% of global virtual transfers of UWC are driven by exports of cotton, sugar cane, fruits, and vegetables. One third of UWC in Mexico, Spain, Turkmenistan, South Africa, Morocco, and Australia is associated with demand from the export markets. The globalization of water through trade contributes to running rivers dry, an environmental externality commonly overlooked by trade policies. By identifying the producing and consuming countries that are responsible for unsustainable irrigation embedded in virtual water trade, this study highlights trade links in which policiesAbstract: Recent studies have highlighted the reliance of global food production on unsustainable irrigation practices, which deplete freshwater stocks and environmental flows, and consequently impair aquatic ecosystems. Unsustainable irrigation is driven by domestic and international demand for agricultural products. Research on the environmental consequences of trade has often concentrated on the global displacement of pollution and land use, while the effect of trade on water sustainability and the drying of over-depleted watercourses has seldom been recognized and quantified. Here we evaluate unsustainable irrigation water consumption (UWC) associated with global crop production and determine the share of UWC embedded in international trade. We find that, while about 52% of global irrigation is unsustainable, 15% of it is virtually exported, with an average 18% increase between year 2000 and 2015. About 60% of global virtual transfers of UWC are driven by exports of cotton, sugar cane, fruits, and vegetables. One third of UWC in Mexico, Spain, Turkmenistan, South Africa, Morocco, and Australia is associated with demand from the export markets. The globalization of water through trade contributes to running rivers dry, an environmental externality commonly overlooked by trade policies. By identifying the producing and consuming countries that are responsible for unsustainable irrigation embedded in virtual water trade, this study highlights trade links in which policies are needed to achieve sustainable water and food security goals in the coming decades. … (more)
- Is Part Of:
- Environmental research letters. Volume 14:Number 11(2019:Nov.)
- Journal:
- Environmental research letters
- Issue:
- Volume 14:Number 11(2019:Nov.)
- Issue Display:
- Volume 14, Issue 11 (2019)
- Year:
- 2019
- Volume:
- 14
- Issue:
- 11
- Issue Sort Value:
- 2019-0014-0011-0000
- Page Start:
- Page End:
- Publication Date:
- 2019-10-22
- Subjects:
- hydrology -- virtual water trade -- irrigation -- groundwater depletion -- environmental flows
Environmental sciences -- Periodicals
Human ecology -- Research -- Periodicals
Environmental health -- Periodicals
333.7 - Journal URLs:
- http://iopscience.iop.org/1748-9326 ↗
http://www.iop.org/EJ/toc/1748-9326 ↗
http://ioppublishing.org/ ↗ - DOI:
- 10.1088/1748-9326/ab4bfc ↗
- Languages:
- English
- ISSNs:
- 1748-9326
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3791.592955
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 19573.xml