M@ppemonde ()
Les « Ramli », Jardins de culture du littoral nord-est tunisien : cartographie de l’évolution récente d’un système original d’irrigation
Abstract
Using a cartographic approach, this paper studies the recent evolution of Ramli gardens. This agricultural parcel was developed on the lagoon of Sidi Ali El Mekki (wetlands in the Gulf of Tunis, the former Bay of Utica). Its unique irrigation system uses the movement of tides to push the water table to the roots. Our methodology is based on the use of a variety of large-scale mapping, photographic, and satellite data processed under a GIS. This study is also based on a survey of 67 local farmers. The work on plot evolution is based on the cartography of changes in land use between 1948 and 2016 and is consolidated by the statistical results of spatial structure indicators that have revealed profound changes. In fact, between 1948 and 1982, the northern banks of the lagoon sheltered most of the agricultural parcels developed for this period, which covers 28.35% of the total agricultural area. Starting from the 1980s, and with sedimentary transformations, the zone located on the coast hosted most of the managed farms with a growth rate of around 217.5%. After 2010, this same area has undergone strong anthropic pressure and the majority of the area's urbanization; aprocess that may shrink the overall area of these garden's that are the sole of their kind in the world.
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