La cartografía de la vegetación en el piso crioromediterráneo: una herramienta para la conservación de la biodiversidad.

Geographic Information Systems are tools which have been used with great interest in vegetation studies. The mapping process developed to store data about vegetation and flora in the upper vegetation belt of Sierra Nevada (South-Eastern Spain) is shown. The aim was to elaborate a detailed cartography that served into future to detect changes in plant communities. The extension of the crioromediterranean belt was estimated in 3875.7 ha, ranging between 2750-3290 m of altitude. We have detected thirteen endemic plant communities and four variants inside, all of them are commonly distributed with low cover and very disperse form. The total of quantified taxa was 185, with more than 37 % of them are endemic of the Baetic range. Our study suggests that the Geographic Information systems are good tools for the study of very complex territories as high mountain areas. They generated information that could be used as a testimony to observe the current climatic change processes.