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Silva Lusitana

versão impressa ISSN 0870-6352

Resumo

JORGE, Mónica Fernandes; CERVEIRA, Maria Adelaide  e  FONSECA, Teresa Fidalgo. Forest management for timber production in fire prone areas of Pinus pinaster. Silva Lus. [online]. 2013, vol.21, n.1, pp.61-72. ISSN 0870-6352.

This study combines a sustainable forest management for timber production with the assessment of the spread of fire, in a maritime pine forest located in the northern region of Portugal, during the period 2012-2016. The study area refers to 1393 ha, distributed among five common lands called baldio areas. Two scenarios were analyzed: absence of intervention versus thinning and clear-cutting scheduling using a timber management plan. The plan was obtained by an optimization model where the goal is to maximize the removed timber given a set of constraints. The characteristics of the fire were determined with the simulator PiroPinus. The output individualizes between surface fire and crown fire, distinguishing in the case of the canopy layer, a passive or active crown fire, depending on the speed of spread of fire. In 2012 the proportion of area prone to crown fire is around 1/3. In 2016 that proportion decreases. This is due to the stand development stage of the studied stands (maturity) and to the natural evolution of the forest. The crown height increases with stand age with a simultaneous reduction in the possibility of fire spreading to the canopy layer.

Palavras-chave : forest fire; sustainable; maritime pine.

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