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标题：SPACE ANALYSIS AND THE DETECTION OF THE CHANGES FOR THE FOLLOW-UP OF THE COMPONENTS SAND-VEGETATION IN THE AREA OF MECHERIA, ALGERIE
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作者：I. Haddouche ; K. Mederbal ; S. Saidi 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 1
出版社：Copernicus Publications
摘要：The Algerian steppe has become for a few years the theatre of an ecological and climatic imbalance. The intense degradation for this fragile medium (stranding wind erosion, overgrazing, clearing, salinisation ….) inducing the turning into a desertification require a better comprehension in order to see how to f ight against this plague and to adapt an adequate installation to him. Thus, this work lies within the scope of the follow-up of the phenomenon of the turning into a desertification on a space with the heart of the high Oranian southem steppe plains, in fact the area of Mecheria. Techniques of numerical cartography, since the satellite image processing until the geographic information systems (SIG) f or the realization of the charts sets of themes, being able to highlight this calamity. The use of the approaches based on the exploitation of the satellite data multi dates (1998 & 2004 ) of the sensor Thematic Mapper (TM ) of Landsat 5 permitted us to obtain a gathering of an interpretative photo maps and vegetation index which , in their turn , helped us to see the changes arrived in the medium , copiously regressive that progressive
关键词：Desertification; Remote sensing; Steppe; Mecheria; Algeria