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Báo cáo lâm nghiệp: "Canopy fuel characteristics and potential crown fire behavior in Aleppo pine (Pinus halepensis Mill.) forests"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Canopy fuel characteristics and potential crown fire behavior in Aleppo pine (Pinus halepensis Mill.) forests. | Ann. For. Sci. 64 2007 287-299 INRA EDP Sciences 2007 DOI 10.1051 forest 2007006 287 Original article Canopy fuel characteristics and potential crown fire behavior in Aleppo pine Pinus halepensis Mill. forests Ioannis D. MlTSOPOULOS Alexandras P. DlMITRAKOPOULOS Laboratory of Forest Protection School of Forestry and Natural Environment Aristotle University of Thessaloniki PO Box 228 54124 Thessaloniki Greece Received 4 July 2006 accepted 27 September 2006 Abstract - Canopy fuel characteristics that influence the initiation and spread of crown fires were measured in representative Aleppo pine Pinus halepensis Mill. stands in Greece. Vertical distribution profiles of canopy fuel load canopy base height and canopy bulk density are presented. Aleppo pine canopy fuels are characterized by low canopy base height 3.0-6.5 m while available canopy fuel load 0.96-1.80 kg m2 and canopy bulk density 0.09-0.22 kg m3 values are similar to other conifers worldwide. Crown fire behavior probability of crown fire initiation crown fire type rate of spread fireline intensity and flame length in Aleppo pine stands with various understory fuel types was simulated with the most updated crown fire models. The probability of crown fire initiation was high even under moderate burning conditions mainly due to the low canopy base height and the heavy surface fuel load. Passive crown fires resulted mostly in uneven aged stands while even aged stands gave high intensity active crown fires. Assessment of canopy fuel characteristics and potential crown fire behavior can be useful in fuel management and fire suppression planning. canopy fuels crown fires fire behavior Aleppo pine Pinus halepensis Mill. Mediterranean Basin Résumé - Caractéristiques des combustibles de la canopée et comportement du potentiel de feu des couronnes de forêts de Pin d Alep Pinus halepensis Mill. . Les caractéristiques des combustibles qui influencent le démarrage et la propagation des feux de couronnes ont été mesurées