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Flammability and Combustibility of Some Mediterranean Species Related with Forest Fires in Croatia †

Faculty of Forestry and Wood Technology, University of Zagreb, 10000 Zagreb, Croatia
Croatian Forestry Institute, 10450 Jaska, Croatia
Author to whom correspondence should be addressed.
Presented at the Third International Conference on Fire Behavior and Risk, Sardinia, Italy, 3–6 May 2022.
Environ. Sci. Proc. 2022, 17(1), 43;
Published: 9 August 2022
(This article belongs to the Proceedings of The Third International Conference on Fire Behavior and Risk)


Climatic conditions are extremely important for both the ignition and spread of forest fires. Flammability and fire spread vary depending on the interactions with environmental factors, such as weather, fuels, and topography. Among the fuel variables that affect forest fires, the fuel moisture content, flammability, and combustibility can widely vary between diverse fuel types. The areas with the highest number of fires show significant variability and differences in air temperature, humidity, and precipitation. These factors have a great influence on the flammability, burning duration, and fuel moisture content of several Mediterranean species. This paper investigates and analyzes the flammability and combustibility characteristics of two Mediterranean species that are important for the Adriatic area in Croatia: the climazonal Holm oak (Quercus ilex L.) and the Aleppo pine (Pinus halepensis Mill.). The latter is an important conifer used for afforestation and reforestation. The results of linear correlation coefficients of flammability delay of these species showed a statistically significant and very strong correlation between the flammability delay and moisture content of the tested samples. Analysis of variance in burning duration showed a statistically significant difference between almost all used variables. The results indicate a significant role of the live fuel moisture content (LFMC) in the flammability delay (DI) and burning time (DC) of natural fuels.

Author Contributions

Conceptualization, R.R. and D.B.; methodology, R.R.; softwere, R.R.; validation, A.A. and T.D.; formal analysis, R.R.; investigation, R.R.; resources, Ž.Š. and D.B.; data curation, R.R.; writing—original draft preparation, R.R.; writing—review and editing, R.R. and D.B.; visualization, R.R.; supervision, R.R.; project administration D.B.; funding acquisition, R.R. All authors have read and agreed to the published version of the manuscript.


This research received no external funding.

Conflicts of Interest

The authors declare no conflict of interest.
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MDPI and ACS Style

Rosavec, R.; Barčić, D.; Dubravac, T.; Antonović, A.; Španjol, Ž. Flammability and Combustibility of Some Mediterranean Species Related with Forest Fires in Croatia. Environ. Sci. Proc. 2022, 17, 43.

AMA Style

Rosavec R, Barčić D, Dubravac T, Antonović A, Španjol Ž. Flammability and Combustibility of Some Mediterranean Species Related with Forest Fires in Croatia. Environmental Sciences Proceedings. 2022; 17(1):43.

Chicago/Turabian Style

Rosavec, Roman, Damir Barčić, Tomislav Dubravac, Alan Antonović, and Željko Španjol. 2022. "Flammability and Combustibility of Some Mediterranean Species Related with Forest Fires in Croatia" Environmental Sciences Proceedings 17, no. 1: 43.

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