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  Reconciling irrigated food production with environmental flows for Sustainable Development Goals implementation

Jägermeyr, J., Pastor, A., Biemans, H., Gerten, D. (2017): Reconciling irrigated food production with environmental flows for Sustainable Development Goals implementation. - Nature Communications, 8, 15900.
https://doi.org/10.1038/ncomms15900

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 Creators:
Jägermeyr, Jonas1, Author              
Pastor, A.2, Author
Biemans, H.2, Author
Gerten, Dieter1, Author              
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              
2External Organizations, ou_persistent22              

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 Abstract: Safeguarding river ecosystems is a precondition for attaining the UN Sustainable Development Goals (SDGs) related to water and the environment, while rigid implementation of such policies may hamper achievement of food security. River ecosystems provide life-supporting functions that depend on maintaining environmental flow requirements (EFRs). Here we establish gridded process-based estimates of EFRs and their violation through human water withdrawals. Results indicate that 41% of current global irrigation water use (997 km3 per year) occurs at the expense of EFRs. If these volumes were to be reallocated to the ecosystems, half of globally irrigated cropland would face production losses of ≥10%, with losses of ∼20–30% of total country production especially in Central and South Asia. However, we explicitly show that improvement of irrigation practices can widely compensate for such losses on a sustainable basis. Integration with rainwater management can even achieve a 10% global net gain. Such management interventions are highlighted to act as a pivotal target in supporting the implementation of the ambitious and seemingly conflicting SDG agenda.

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 Dates: 2017
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/ncomms15900
PIKDOMAIN: Earth System Analysis - Research Domain I
eDoc: 7631
Research topic keyword: Freshwater
Research topic keyword: Adaptation
Research topic keyword: Sustainable Development
Model / method: LPJmL
Regional keyword: Global
Organisational keyword: RD1 - Earth System Analysis
Working Group: Terrestrial Safe Operating Space
Working Group: Land Use and Resilience
 Degree: -

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Title: Nature Communications
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 8 Sequence Number: 15900 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals354