Abstract
The diachronic land use analysis, performed by processing the sensor data, is based on the 10-and 30-yearchange maps. The dynamics of the vegetation is followed by the application of the NDVI. The gradual and regressive changes in the components of land use reached the rates of 44.78% and -29.21% respectively. The most reduced surfaces are the forest massifs, the steppe area and to a lesser extent the waters of the saline surfaces (dayet). Cereal crops, urban and mineral areas, on the other hand, have increased in area to the detriment of the natural plant cover. The stability of the studied area recorded only a rate of 26.01%. This rate represented only ¼ of the area of the south of Tlemcen region.
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