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|Title: ||Characterization of wildfires in Portugal|
|Authors: ||Marques, Susete|
Borges, José Guilherme
Carreiras, J. M. B.
|Editors: ||Pretzsch, Hans|
Ågren, Göran I.
O'Hara, Kevin L.
Reynolds, Keith M.
Skovsgaard, Jens Peter
|Keywords: ||Fire characterization|
Geographic information system
|Issue Date: ||2011|
|Abstract: ||Forest fires severity has increased in Portugal in
the last decades. Climate change scenarios suggest the
reinforcement of this severity. Forest ecosystem managers
and policy-makers thus face the challenge of developing
effective fire prevention policies. The characterization of
forest fires is instrumental for meeting this challenge. An
approach for characterizing fire occurrence in Portugal,
combining the use of geographic information systems and
statistical analysis techniques, is presented. Emphasis was
on the relationships between ecological and socioeconomic
features and fire occurrence. The number and sizes of
wildfires in Portugal were assessed for three 5-year periods
(1987–1991, 1990–1994, and 2000–2004). Features maps
were overlaid with perimeters of forest fires, and the proportion
of burned area for each period was modeled using weighted generalized linear models (WGLM). Descriptive statistics showed variations in the distribution of fire size
over recent decades, with a significant increase in the
number of very large fires. Modeling underlined the impact
of the forest cover type on the proportion of area burned.
The statistical analysis further showed that socioeconomic
features such as the proximity to roads impact the probability
of fires occurrence. Results suggest that this approach may provide insight needed to develop fire prevention policies.|
|Appears in Collections:||CIMA - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
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