Utilize este identificador para referenciar este registo: http://hdl.handle.net/10348/1394
Título: Fuel age, weather and burn probability in Portugal
Autor: Fernandes, Paulo
Loureiro, Carlos
Magalhães, Marco
Ferreira, Pedro
Fernandes, Manuel
Palavras-chave: fire frequency
fire regime
Data: 2012
Resumo: The relative influence of the factors acting upon burn probability, namely fuel and weather, is not well understood, especially in Europe. We use a digital fire atlas (1975-2008) and apply survival analysis to individual fires (1998-2008) to describe how burn probability changes with fuel age in Portugal. The typical FRI (fire return interval) and median fire-free interval vary regionally from 23 to 52 and 18 to 47 years, respectively. Increase of the hazard of burning with time is generally near linear, denoting moderate fuel-age dependency as in some other shrub-dominated Mediterranean environments. Analysis of complete fire intervals resulted in shorter FRI and higher fuel-age dependency of burn probability than findings that included censored observations. Increasingly severe weather conditions either expressed through fire size or by extreme fire danger, concurrently decreased fuel-age dependency and selected for older fuels. The results are discussed from the viewpoints of fire suppression and fuel treatments.
Revisão por Pares: yes
URI: http://hdl.handle.net/10348/1394
Tipo de Documento: Artigo
Aparece nas colecções:OLD - DCFAP - Artigo em Revista Científica Internacional

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