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Spatial and temporal analysis of a tidal floodplain landscape-Amapá, Brazil-using geographic information systems and remote sensing / V.F.G. Pereira in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 5 (Mai 2002)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 68 n° 5 (Mai 2002) . - pp 463 - 472 Titre : Spatial and temporal analysis of a tidal floodplain landscape-Amapá, Brazil-using geographic information systems and remote sensing Type de document : Article/Communication Auteurs : V.F.G. Pereira, Auteur ; Russell G. Congalton, Auteur ; D.J. Zarin, Auteur Année de publication : 2002 Article en page(s) : pp 463 - 472 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse diachronique [Termes IGN] analyse spatio-temporelle [Termes IGN] Brésil [Termes IGN] image Landsat [Termes IGN] photo-interprétation [Termes IGN] système d'information géographique [Termes IGN] télédétection spatiale [Termes IGN] zone inondable Résumé : (Auteur) For at least 12,000 years, Amazonian floodplains (varzea) have been exploited by human populations. Although they represent a small fraction of the Amazon basin, floodplains contain the most productive ecosystems of the region. Easy access and the abundance of valuable forest products have historically led to higher human population densities and higher resource use than in many interfluvial areas. Recent research has brought attention to land-use and land-cover change in upland Amazonian forests, but relatively little research has been conducted on similar dynamics in the floodplains. In this project, we used photointerpretation of 1970s aerial photographs and digital image classification of Landsat Thematic Mapper (TM) 5 imugeiy from the 1990s to produce land-cover maps used for change detection analysis. A study area in the tidal floodplains of the State of Amapa, in the northern Brazilian Amazon, was evaluated. The accuracy of the Landsat TM classification and errors inherent to the techniques used were assessed. Several changes in the study site were observed, including increases in the areal extent of secondary growth and palm forests and corresponding decreases in intact varzea forest area. Numéro de notice : A2002-104 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/2002journal/may/2002_may_463-472.p [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22019 [article]