Wildfires are a major threat to people and property in Wildland Urban Interface (WUI) communities worldwide, but while the patterns of the WUI in North America, Europe and Oceania have been studied before, this is not the case in Latin America. Our goals were to a) map WUI areas in central Argentina, and b) assess wildfire exposure for WUI communities in relation to historic fires, with special emphasis on large fires and estimated burn probability based on an empirical model. We mapped the WUI in the mountains of central Argentina (810,000 ha), after digitizing the location of 276,700 buildings and deriving vegetation maps from satellite imagery. The areas where houses and wildland vegetation intermingle were classified as Intermix WUI (housing density > 6.17 hu/km2 and wildland vegetation cover > 50%), and the areas where wildland vegetation abuts settlements were classified as Interface WUI (housing density > 6.17 hu/km2, wildland vegetation cover < 50%, but within 600 m of a vegetated patch larger than 5 km2). We generated burn probability maps based on historical fire data from 1999 to 2011; as well as from an empirical model of fire frequency. WUI areas occupied 15% of our study area and contained 144,000 buildings (52%). Most WUI area was Intermix WUI, but most WUI buildings were in the Interface WUI. Our findings suggest that central Argentina has a WUI fire problem. WUI areas included most of the buildings exposed to wildfires and most of the buildings located in areas of higher burn probability. Our findings can help focus fire management activities in areas of higher risk, and ultimately provide support for landscape management and planning aimed at reducing wildfire risk in WUI communities.
Bibliographical noteFunding Information:
J.P.A. thanks Fulbright and the Bunge y Born Foundation which provided a Fellowship to support an internship at the SILVIS Lab, Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, USA. J.P.A. is grateful to the host institution for providing great working facilities, technical assistance of D. Helmers and helpful comments from the staff. D. Brito collaborated to create the building layer. We thank personnel from Instituto Gulich, CONAE – UNC, for providing SPOT 5 imagery and allowing the use of their facilities. R. Heredia from Plan Provincial de Manejo del Fuego of Córdoba, A. Carcur, ranger at Reserva Hídrica Natural Parque La Quebrada and grad students: E. Andreu, D. Lasdica, E. Miranda, F. Molina, G. Morera, D. Palacios, C. Pereyra, J.M. Sanchez, C. Reati helped during field surveys. K. Begg, gave us permission to do field surveys in his farm. This study was funded by grants to L.M.B. from SECyT – Universidad Nacional de Córdoba, FONCYT (PICT Nº 1147) and CONICET (PIP Nº 11220090100263). J.P.A. has a fellowship from CONICET and L.M.B. is a researcher at CONICET.
© 2017 Elsevier Ltd
- Burn probability
- Latin America
- Point-based approach
- WUI mapping
- Wildfire exposure
ASJC Scopus subject areas
- Environmental Engineering
- Waste Management and Disposal
- Management, Monitoring, Policy and Law