Article révisé par les pairs
Résumé : The Ghâb, the Apamean western countryside (Northwestern Syria), is known since Antiquity as a wealthy region. However, no study has so far attempted to understand the development of this territory during the Roman and Byzantine periods. A rupture can be identified among the literary mentions that deal with this area and be placed during the Severian era ca. This modification comes from the disappearing of the marshland's evocations and the new assertion of its wealth derived from its cultivations. We enquire therefore whether this rupture can be explained by works undertaken to purge this Apamean countryside and to what extent a relationship could be seen with the Parthian wars launched from the late 2nd century ad onwards. This work deals subsequently with the hypothetic small scale irrigation and the identification of the major Ghäb productions during Late Antiquity. It's from this period that the Ghäb has ensured its fertility reputation.