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Article << Previous     |     Next >>   Contents Vol 18(1)

Construction of empirical models for predicting Pinus sp. dead fine fuel moisture in NW Spain. I: Response to changes in temperature and relative humidity

Ana Daría Ruiz González A C, Jose Antonio Vega Hidalgo B, Juan Gabriel Álvarez González A

A Departamento de Ingeniería Agroforestal, Escuela Politécnica Superior, Universidad de Santiago de Compostela, E-27002 Lugo, Spain.
B Departamento de Protección ambiental, CINAM-Lourizán, Xunta de Galicia, E-36080 Pontevedra, Spain.
C Corresponding author. Email: anadaria.ruiz@usc.es
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A statistical methodology is presented for developing moisture content models from repeated measurements made on non-destructive repeated measurements. Empirical vapour exchange models for dead fine fuels generated in Pinus radiata and P. pinaster stands are developed by using the methodology proposed. Experiments were carried out with five types of fuel particles (surface and aerial fine fuels) of the two species of pine, in Lugo (Galicia, north-west Spain). The samples of each fuel type were collected and placed inside an instrument shelter so that vapour exchange with the atmosphere was the only source of moisture in the fuels. Statistical criteria obtained from the residuals indicated that the fitted models were acceptable. The cross-validation results also confirmed the validity of the fitted models. The model underlined the decisive role played by the time lag in dead fine fuel moisture content variation.

Keywords: fire behaviour, fire danger, vapour exchange.

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