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Developing post-fire Eucalyptus globulus stand damage and tree mortality models for enhanced forest planning in Portugal
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Orientador(es)
Resumo(s)
Forest and fire management planning activities are carried out mostly independently of each
other. This paper discusses research aiming at the development of methods and tools that can
be used for enhanced integration of forest and fire management planning activities. Specifically,
fire damage models were developed for Eucalyptus globulus Labill stands in Portugal.
Models are based on easily measurable forest characteristics so that forest managers may
predict post-fire mortality based on forest structure. For this purpose, biometric data and
fire-damage descriptors from 2005/2006 National Forest Inventory plots and other sample
plots within 2006, 2007 and 2008 fire areas were used. A three-step modelling strategy based
on logistic regression methods was used. In the first step, a model was developed to predict
whether mortality occurs after a wildfire in a eucalypt stand. In the second step the degree
of damage caused by wildfires in stands where mortality occurs is quantified (i.e. percentage
of mortality). In the third step this mortality is distributed among trees. Data from over 85
plots and 1648 trees were used for modeling purposes. The damage models show that relative
damage increases with stand basal area. Tree level mortality models indicate that trees
with high diameters, in dominant positions and located in regular stands are less prone to die
when a wildfire occurs
Descrição
Research Article
Palavras-chave
forest fires forest management Eucalyptus globulus damage model post-fire mortality
Contexto Educativo
Citação
Marques, S., Garcia-Gonzalo, J., Borges, J.G., Botequim, B., Oliveira, M.M., Tomé, J. & Tomé, M. 2011. Developing post-fire Eucalyptus globulus stand damage and tree mortality models for enhanced forest planning in Portugal. Silva Fennica 45(1): 69–83
Editora
The Finnish Society of Forest Science