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标题：La détermination de la limite nord du désert par télédétection
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作者：Christian Puech ; Mohamed Merdas
期刊名称：Science et changements planétaires / Sécheresse
印刷版ISSN：1147-7806
电子版ISSN：1777-5922
出版年度：1990
卷号：1
期号：3
页码：170-178
出版社：John Libbey Eurotext
摘要：Authors Christian Puech , Mohamed Merdas CEMAGREF-ENGREF Laboratoire commun de Télédétection Domaine de Lavalette, BP 5095 34033 Montpellier Cedex, France. Page(s) : 170-8 Published in: 1990 The study of the relative variations of albedo and surface temperature indicate two specific stages: the «radiative one» and the «hydric one», which correspond to two very different states of hydric alimentation of plants. This result is applied to study seasonal variations of the hydric state of the soil in North Africa using NOAA imagery. It seems possible to use this methodology to caracterize the evolution of the desert in the Maghreb area using images over succesive years.