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A spatial evaluation of global wildfire-water risks to human and natural systems

Posted date: October 30, 2017
Publication Year: 
2017
Authors: Robinne, Francois-Nicolas; Bladon, Kevin D.; Miller, Carol L.; Parisien, Marc-Andre; Mathieu, Jerome; Flannigan, Mike D.
Publication Series: 
Scientific Journal (JRNL)
Source: Science of the Total Environment. 610-611: 1193-1206.

Abstract

The large mediatic coverage of recent massive wildfires across the world has emphasized the vulnerability of freshwater resources. The extensive hydrogeomorphic effects from a wildfire can impair the ability of watersheds to provide safe drinking water to downstream communities and high-quality water to maintain riverine ecosystem health. Safeguarding water use for human activities and ecosystems is required for sustainable development; however, no global assessment of wildfire impacts on water supply is currently available. Here, we provide the first global evaluation of wildfire risks to water security, in the form of a spatially explicit index. We adapted the Driving forces-Pressure-State-Impact-Response risk analysis framework to select a comprehensive set of indicators of fire activity and water availability, which we then aggregated to a single index of wildfire-water risk using a simple additive weighted model. Our results show that water security in many regions of the world is potentially vulnerable, regardless of socio-economic status. However, in developing countries, a critical component of the risk is the lack of socio-economic capability to respond to disasters. Our work highlights the importance of addressing wildfire-induced risks in the development of water security policies; the geographic differences in the components of the overall risk could help adapting those policies to different regional contexts.

Citation

Robinne, Francois-Nicolas; Bladon, Kevin D.; Miller, Carol; Parisien, Marc-Andre; Mathieu, Jerome; Flannigan, Mike D. 2017. A spatial evaluation of global wildfire-water risks to human and natural systems. Science of the Total Environment. 610-611: 1193-1206.