Developing wildfire risk probability models for Eucalyptus globulus stands in Portugal

doi:10.3832/ifor0821-006

Developing wildfire risk probability models for Eucalyptus globulus stands in Portugal

B Botequim⁽¹⁾ , J Garcia-Gonzalo⁽¹⁾, S Marques⁽¹⁾, A Ricardo⁽¹⁾, JG Borges⁽¹⁾, M Tomé⁽¹⁾, MM Oliveira⁽²⁾

iForest - Biogeosciences and Forestry, Volume 6, Issue 4, Pages 217-227 (2013)
doi: https://doi.org/10.3832/ifor0821-006
Published: May 27, 2013 - Copyright © 2013 SISEF

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This paper presents a model to predict annual wildfire risk in pure and even-aged eucalypt stands in Portugal. Emphasis was in developing a management-oriented model, i.e., a model that might both: (a) help assess wildfire occurrence probability as a function of readily available forest inventory data; and (b) help predict the effects of management options (e.g., silvicultural treatments) on the risk of fire in eucalypt stands. Data from both the 1995/1998 and the 2005/2006 Portuguese National Forest Inventories as well as wildfire perimeters’ data were used for modeling purposes. Specifically, this research considered 1122 inventory plots with approximately 1.2 million trees and 85 wildfire perimeters. The model to predict the probability of wildfire occurrence is a logistic function of measurable and controllable biometric and environmental variables. Results showed that wildfire occurrence probability in a stand increases with the ratio basal area/quadratic mean diameter and with the shrubs biomass load, while it decreases with stand dominant height. They further showed that the probability of wildfire occurrence is higher in stands that are over 1 Km distant from roads. These results are instrumental for assessing the impact of forest management options on wildfire risk levels thus helping forest managers develop plans that may mitigate wildfire impacts.

Keywords

Forest Fires, Forest Management, Eucalyptus globulus Labill, Annual Wildfire Risk Model

Authors’ address

(1)

Forest Research Centre, School of Agriculture, Departamento de Recursos Naturais, Ambiente e Território, Technical University of Lisbon, tapada da Ajuda, P-1349-017 Lisboa (Portugal)

(2)

Research Centre in Mathematics and Applications, Colégio Luís Verney, University of Évora, rua Romão Ramanho 59, P-7000-671 Évora (Portugal)

Corresponding author

B Botequim
bbotequim@isa.utl.pt

Citation

Botequim B, Garcia-Gonzalo J, Marques S, Ricardo A, Borges JG, Tomé M, Oliveira MM (2013). Developing wildfire risk probability models for Eucalyptus globulus stands in Portugal. iForest 6: 217-227. - doi: 10.3832/ifor0821-006

Academic Editor

Marco Borghetti

Paper history

Received: Oct 12, 2012
Accepted: Mar 18, 2013

First online: May 27, 2013
Publication Date: Aug 01, 2013
Publication Time: 2.33 months

Open Access

This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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