Revue d’Ecologie (Terre et Vie), Vol. 72 (4), 2017 : 387-409 CARTOGRAPHIE DE L’INTENSITÉ DU FEU ET DE LA SENSIBILITÉ AUX FEUX DE CIMES EN FORÊTS MÉDITERRANÉENNES. CAS DE LA PROVINCE DE CHEFCHAOUEN AU NORD DU MAROC Hicham MHARZI ALAOUI1,2*, Fouad ASSALI1,2, Mohamed ROUCHDI1, Driss TAHIRI1, Said LAHSSINI3, Abderrahmane AAFI3 & Said MOUKRIM4 1 Institut Agronomique et Vétérinaire Hassan II, Rabat, Maroc 2 Centre National de Gestion des Risques Climatiques Forestiers, HCEFLCD, Rabat, Maroc 3 École Nationale Forestière d’Ingénieurs, Salé, Maroc 4 Université Mohammed V de Rabat, Faculté des Sciences, Rabat, Maroc * Auteur correspondant. E-mail:
[email protected] SUMMARY.— Mapping of fire intensity and of sensibility to crown fires in Mediterranean forests. Case of the province of Chefchaouen in northern Morocco.— The current evolution of the forest fire regime poses new challenges to the usual practices of forest management plans and forest fires strategies. The implementation of wisely measured actions on the ground in terms of preventive silviculture, water points or fire breaks, requires a deep understanding and a fine mapping of the fire behaviour. This paper focuses first on mapping the fire intensity using the Byram formula in the province of Chefchaouen, one of the most affected regions by this scourge in Morocco. The fire speed of spread is estimated using the parametric equations derived from the physical model FireStar, the spatially varying wind fields according to the relief are carried out by the Windninja software. Secondly, the localization of sensitive areas to crown fires was carried out using the Nelson & Adkins model.