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BRDF-corrected vegetation indices confirm seasonal pattern in greening of French Guiana's forests / Emil A. Cherrington in Revue Française de Photogrammétrie et de Télédétection, n° 211 - 212 (juillet - décembre 2015)  

Public [article]  inRevue Française de Photogrammétrie et de Télédétection > n° 211 - 212 (juillet - décembre 2015) . - pp 3 - 9 Titre : BRDF-corrected vegetation indices confirm seasonal pattern in greening of French Guiana's forests Type de document : Article/Communication Auteurs : Emil A. Cherrington, Auteur ; Grégoire Vincent, Auteur ; Daniel Sabatier, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 3 - 9 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] distribution du coefficient de réflexion bidirectionnelle BRDF [Termes IGN] forêt tropicale [Termes IGN] Guyane (département français) [Termes IGN] image SPOT-Végétation [Termes IGN] image Terra-MODIS [Termes IGN] indice de végétation [Termes IGN] phénologie [Termes IGN] surveillance forestière [Termes IGN] variation saisonnière Résumé : (auteur) Remote sensing is a useful tool set for monitoring changes in forest ecosystems, particularly remote and otherwise inaccessible tracts of tropical forest. To revisit findings of earlier satellite-based studies of phenological variation in Amazonian forests, the current study focused on the variation of vegetation indices (Vis) of French Guiana. Specifically, 12 years of VI data which had been treated for bi-directional effects were extracted from the archives of 2 particular satellite sensors: the SPOT VEGETATION instrument, and MODIS (the MODerate resolution Imaging Spectroradiometer). At the scale of the entire territory of French Guiana, as well as at 4 sites across the territory, VI data displayed strong seasonal patterns, with the dry season months having significantly higher VI estimates than the wet season months. As Vls are considered proxies for photosynthetic activity, those seasonal variations would seem to indicate leaf-Flushing across French Guiana's forests during the dry season months of September to October. Numéro de notice : A2015-900 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.52638/rfpt.2015.536 Date de publication en ligne : 30/12/2020 En ligne : https://doi.org/10.52638/rfpt.2015.536 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79555 [article]