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A land cover map of South America. Repositório Alice
EVA, H. D.; BELWARD, A. D.; MIRANDA, E. E. de; DI BELLA, C. M.; GONDS, V.; HUBER, O.; JONES, S.; SGRENZAROLI, M.; FRITZ, S..
A digital land cover map of South America has been produced using remotely sensed satellite data acquired between 1995 and the year 2000. The mapping scale is defined by the 1 km spatial resolution of the map grid-cell. In order to realize the product, different sources of satellite data were used, each source providing either a particular parameter of land cover characteristic required by the legend, or mapping a particular land cover class. The map legend is designed both to fit requirements for regional climate modelling and for studies on land cover change. The legend is also compatible with a wider, global, land cover mapping exercise, which seeks to characterize the world?s land surface for the year 2000. As a first step, the humid forest domain has...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazonia; Ecosystems; Land cover; Mapping; South America; Vegetation classes.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/17218
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Validation of the global land Cover 2000 map. Repositório Alice
MAYAUX, P.; EVA, H.; GALLEGO, J.; STRAHLER, A. H.; HEROLD, M.; AGRAWAL, S.; NAUMOV, S.; MIRANDA, E. E. de; DI BELLA, C. M.; ORDOYNE, C.; KOPIN, Y.; ROY, P. S..
The Joint Research Centre of the European Commission (JRC), in partnership with 30 institutions, has produced a global land cover map for the year 2000, the GLC 2000 map. The validation of the GLC2000 product has now been completed. The accuracy assessment relied on two methods: a confidence-building method (quality control based on a comparison with ancillary data) and a quantitative accuracy assessment based on a stratified random sampling of reference data. The sample site stratification used an underlying grid of Landsat data and was based on the proportion of priority land cover classes and on the landscape complexity. A total of 1265 sample sites have been interpreted. The first results indicate an overall accuracy of 68.6%. The GLC2000 validation...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Quality control; Statistics; Vegetation mapping.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1009181
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