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ŠUMARSKI LIST 9-10/2013 str. 33     <-- 33 -->        PDF

Vučetić, M. (2002): Weather Conditions and a Comparison of the Forest Fire Season 2001 with Long-Term Mean Values, Šumarski list, 11–12, 563–574.
Vukelić, J., Trinajstić, I., Baričević, D. (2011): Šumska vegetacija hrvatskoga Sredozemlja. U: Šume hrvatskoga Sredozemlja, Akademija šumarskih znanosti, Zagreb, 193–214.
Walter, H. (1955): Die Klima-Diagramme als Mittel zur Beurteilung der Klimaverhältnisse für ökologische, vegetationskundliche und landwirtschafliche Zwecke. Ber. Deutsch. Bot. Ges. 68: 321–344.
Forest fires significantly affect the degradation of habitats in Croatia and in the whole Mediterranean. From 1995. until 2012. years in the Croatian karst was 4279 fire. The total burned area amounted to 242,690 ha and 56,70 ha per fire. In Croatia, the Aleppo pine (Pinus halepensis Mill.) comes in different vegetation zones that have different climatic characteristics. Investigations were carried out on three Adriatic islands. The island of Rab is in eumediterranean vegetation zone, while the islands of Brač and Korčula mostly found in stenomediterranean vegetation zone. Total rainfall on the island of Rab is 1087 mm, 716 mm of Brač and 1000 mm of Korčula per year. Given the climate conditions during the summer months increases the risk of developing and spreading wildfires. The risk is greatest in forest plantations and native stands of Aleppo pine, especially if they are not implemented silvicultural work. In general, this refers to the cleaning work in the early years, and thinning in later years. Based on the relevant climate parameters were obtained monthly (Mounthly Severity Rating MSR) and seasonal (Seasonal Severity Rating SSR) potential severity. Potential severity score was calculated using the methods of the Canadian Canadian Forest Fire Danger Rating System and its subsystems Fire Weather Index (Fire Weather Index, FWI). The aim of the research is to analyze the climatic parameters and their influence towards Aleppo pine stands in different site conditions with the aim of using the obtained intensity as a preventive measure to protect the forests, as well as the relationship between climatic parameters of the fundamental characteristics (delay flammability, flame duration, moisture content) of fine forest fuels Aleppo pine. The results suggest that significantly higher values ​​MSR for August than for July. From secondary seasonal score intensity is evident that they are lower on the islands of Korčula and Rab in relation to the island of Brač. Climatic parameters differently correlate with the basic characteristics of fine fuels – ignition (DI), burning (DC) and the moisture content of the live fuel (LFMC).
Key words: forest fires, Aleppo pine, seasonal severity ratings, monthly severity ratings, fine forest fuel