A planetary boundary-based method to assess freshwater use at the global and local scales
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Date
2022-09
Publication Type
Journal Article
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yes
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Abstract
Many studies have attempted to evaluate the transgression of the water planetary boundary at sub-global levels. Typically, this has been done by assessing water consumption in a country/city or sector against the assigned share of the global limit. Such an approach enables evaluating whether a sub-global unit operates within the safe global limits. However, it ignores spatial water availability and thus may provide an incomplete image of water-related environmental impacts and thus local boundaries. This study demonstrates how the water planetary boundary concept can be integrated within the Environmentally Extended Multi-Region Input-Output (EEMRIO) framework to assess global and local (watershed level) boundaries. Our results demonstrate that even though most countries operate within globally safe limits, for several countries, a large share of water comes from watersheds that have reached unsafe water consumption levels. This highlights the importance of combining local and global level assessments to design more accurate and tailored policy responses targeting specific watersheds that are most at risk.
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Publication status
published
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Journal / series
Volume
17 (9)
Pages / Article No.
94031
Publisher
IOP Publishing
Event
Edition / version
Methods
Software
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Date collected
Date created
Subject
planetary boundaries; water; input output analysis; safe operating space; environmental assessment
Organisational unit
03732 - Hellweg, Stefanie / Hellweg, Stefanie