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：1992
卷号：3
期号：2
页码：97-102
出版社：John Libbey Eurotext
摘要：Authors Valéry Gond , Jacques Hubschman , Catherine Meste CIMA-CNRS, actuellement au LERTS-CNES-CNRS UM0001, 18, avenue E. Belin, 31055 Toulouse Cedex, France, CNRS URA 366, Institut de Géographie, Université de Toulouse le Mirail, 5, allées A. Machado, 31058 Toulouse Cedex, France, Laboratoire de Botanique et Biogéographie, Université Paul Sabatier, 39, allées Jules Guesde, 31062 Toulouse Cedex, France. Page(s) : 97-102 Published in: 1992 From the AVHRR-Global Vegetation Index (GVI) data set produced by NOAA, new monthly composites are extracted, regarding seven years of global monitoring over the semi-arid Nordeste of Brazil. Space and time-related variations of plant cover phenology are displayed and compared with ground based rainfall data. Both data sets are digitally processed for computer mapping and for analyzing their specific relationships. Four key-periods are taken into account to monitor the dynamics of seasonal drought.
