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The Sierra of the Culebra is showed as a space with deep transformations in its physiognomy vegetal during a long temporal evolution. The agent which caused these changes has been the human being, who, of direct or indirect way, has eliminated the forest species, or has let the replace of same forest species by others, creating so a medium of high stability of the vegetation. Here is studyed the result of this dinamic of the vegetation in two signifi cant moments of the evolution, the 18 th and the 20 th centuries. In the fi rst date we already have found a lanscape vegetal broadly modelling by the man, with predominance of the brushwoods of heather, across of the introduction of a determined economic structure. While in the second hand of 20 th century will be external agents to

La transformación del paisaje vegetal y los aprovechamientos forestales tradicionales en la Sierra de la Culebra (Zamora)