Abstract
The majority of wildfires in Spain are caused by human activities. However, much wildfire research has focused on the biological and physical aspects of wildfire, with comparatively less attention given to the importance of socio-economic factors. With recent changes in human activity and settlement patterns in many parts of Spain, potentially contributing to the increases in wildfire occurrence recently observed, the need to consider human activity in models of wildfire risk for this region are apparent. Here we use a method from Bayesian statistics, the weights of evidence (WofE) model, to examine the causal factors of wildfires in the south west of the Madrid region for two differently defined wildfire seasons. We also produce predictive maps of wildfire risk. Our results show that spatial patterns of wildfire ignition are strongly associated with human access to the natural landscape, with proximity to urban areas and roads found to be the most important causal factors We suggest these characteristics and recent socio-economic trends in Spain may be producing landscapes and wildfire ignition risk characteristics that are increasingly similar to Mediterranean regions with historically stronger economies, such as California, where the urban-wildland interface is large and recreation in forested areas is high. We also find that the WofE model is useful for estimating future wildfire risk. We suggest the methods presented here will be useful to optimize time, human resources and fire management funds in areas where urbanization is increasing the urban-forest interface and where human activity is an important cause of wildfire ignition.
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Acknowledgements
We thank the two anonymous reviewers for the extremely valuable comments provided as well as the editorial comments. We would like to express our gratitude to Servicio de Cartografía Regional and Sección de Defensa Contra Incendios Forestales of the Regional Government of Madrid for the Digital cartography and Ignition Point database. We also wish to thank at the Ministry of Education and Sciences for the finance received (project CGL2004-06049-C04-02/CLI., FIREMAP).
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Romero-Calcerrada, R., Novillo, C.J., Millington, J.D.A. et al. GIS analysis of spatial patterns of human-caused wildfire ignition risk in the SW of Madrid (Central Spain). Landscape Ecol 23, 341–354 (2008). https://doi.org/10.1007/s10980-008-9190-2
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DOI: https://doi.org/10.1007/s10980-008-9190-2