[EN] In view of the increasing intensity and frequency of large forest fires, the study and simulation of fire behavior in Mediterranean forests appears as a crucial task to define prevention and extinction strategies. The physical model Fire Dynamics Simulator (FDS) allows the analysis of fire behavior in 3D scenarios at high levels of resolution by introducing LiDAR point clouds to describe the structure and characteristics of the vegetation. The main objective of this paper is the analysis of fire behavior in Mediterranean forest semi-real scenarios, by modifying structural properties of the forest related to the horizontal and vertical continuity of the vegetation. To achieve this goal, a methodology has been developed to generate scenarios from real segmented and voxelized individuals of Mediterranean shrubland and tree species. These models were obtained from TLS (Terrestrial Laser Scanning) in plots located in La Serra d'Espadà. The methodology considers the distribution of biomass at individual and voxel level, taking into account a heterogeneous distribution of the bulk density of forest fuel, estimated based on the proportion of returns from the point cloud. Finally, for the analysis of the results, the evolution graphs of the following model output variables have been studied: the rate of spread, the heat release rate, the mass loss rate and the percentage of biomass consumed. Preliminary findings indicate that horizontal continuity of vegetation is the main driver for the development of steady and sustained fires. , This work was supported by (i) PID2020-117808RBC21/AEI/10.13039/50110001103 and FSE+ “Invierte en tu Futuro” under Grant PRE2021-099526; and (ii) “Programa de Contratos de Acceso de Personal Investigador Doctor” (PAID-10-22) from “Vicerrectorado de Investigación de la Universitat Politècnica de València”.