thesis

Phytoclimatologie de la montagne marocaine : le Rif central

Defense date:

Jan. 1, 1993

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Institution:

Paris 7

Disciplines:

Directors:

Abstract EN:

We attemps to delect the flora variation in relationship with the climate in central rif (marocco). It con be seen from the analysis of the horizontal distribution of species along continsons sampling transeet accross the centra rif which shon two floristica majors limits : the firstin the north entry of the cedas forest, the second at hio south limit. It can be obtrined also from the climatic study which bring out an opposition between the mediterraneen side and the atlantic si te of therif. Besides a study of surface temperature measurements from the noaa satellite bring out the individualization of the central rif and an affinity between the mediterraneen side and the south limit of the transect. The climate individuality has an effect upon clearly on vegetation structure.

Abstract FR:

On essaie de deceler les variations floristiques en relation avec celles du climat dans le rif central (maroc). L'analyse de la distribution horizontale des especes le long d'un transect continu a travers le rif montre deux limites floristiques majeures : la premiere au nord a l'entree de la cedraie du rif central, et la seconde a sa sortie. L'etude des precipitations quotidiennes fait ressortir l'individualite du versant mediterraneen ribain. En outre, l'etude des temperatures de surface par les images satellitaires (noaa) montre l'individualite du rif central et une certaine affinite entre le versant mediterraneen et la limite meridionale du transect. L'opposition climatique retentit donc clairement sur le structure de la vegetation.