Diurnal surface fuel moisture prediction model for Calabrian pine stands in Turkey

This study presents a dynamic model for the prediction of diurnal changes in the moisture content of dead surface fuels in normally stocked Calabrian pine stands under varying weather conditions. The model was developed based on several empirical relationships between moisture contents of dead surfa...

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Bibliographic Details
Published in:IForest (Viterbo) 2019-06, Vol.12 (3), p.262-271
Main Authors: Bilgili, E, Coskuner, KA, Usta, Y, Saglam, B, Kucuk, O, Berber, T, Goltas, M
Format: Article
Language:English
Subjects:
Adsorption
Diurnal
Drying Rate
Dynamic models
Empirical analysis
Equilibrium
Forest & brush fires
Fuel Moisture Content
Fuels
Humidity
Inspection
Litter
Mathematical models
Modeling
Moisture content
Moisture effects
Precipitation
Prediction models
Rain
Simulation
Vapor Pressure Deficit
Variables
Water content
Weather
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Summary:This study presents a dynamic model for the prediction of diurnal changes in the moisture content of dead surface fuels in normally stocked Calabrian pine stands under varying weather conditions. The model was developed based on several empirical relationships between moisture contents of dead surface fuels and weather variables, and calibrated using field data collected from three Calabrian stands from three different regions of Turkey (Mugla, southwest; Antalya, south; Trabzon, north-east). The model was tested and validated with independent measurements of fuel moisture from two sets of field observations made during dry and rainy periods. Model predictions showed a mean absolute error (MAE) of 1.19% for litter and 0.90% for duff at Mugla, and 3.62% for litter and 14.38% for duff at Antalya. When two rainy periods were excluded from the analysis at Antalya site, the MAE decreased from 14.38% to 4.29% and R2 increased from 0.25 to 0.83 for duff fuels. Graphical inspection and statistical validation of the model indicated that the diurnal litter and duff moisture dynamics could be predicted reasonably. The model can easily be adapted for other similar fuel types in the Mediterranean region.
ISSN:1971-7458
1971-7458
DOI:10.3832/ifor2870-012