Document Detail


Land cover mapping of the tropical savanna region in Brazil.
MedLine Citation:
PMID:  19504057     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The Brazilian tropical savanna (Cerrado), encompassing more than 204 million hectares in the central part of the country, is the second richest biome in Brazil in terms of biodiversity and presents high land use pressure. The objective of this study was to map the land cover of the Cerrado biome based on the segmentation and visual interpretation of 170 Landsat Enhanced Thematic Mapper Plus satellite scenes acquired in 2002. The following land cover classes were discriminated: grasslands, shrublands, forestlands, croplands, pasturelands, reforestations, urban areas, and mining areas. The results showed that the remnant natural vegetation is still covering about 61% of the biome, however, on a highly asymmetrical basis. While natural physiognomies comprise 90% of the northern part of the biome, only 15% are left in its southern portions. Shrublands were the dominant natural land cover class, while pasturelands were the dominant land use class in the Cerrado biome. The final Cerrado's land cover map confirmed the intensive land use pressure in this unique biome. This paper also showed that Landsat-like sensors can provide feasible land cover maps of Cerrado, although ancillary data are required to help image interpretation.
Authors:
Edson E Sano; Roberto Rosa; Jorge L S Brito; Laerte G Ferreira
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-06-06
Journal Detail:
Title:  Environmental monitoring and assessment     Volume:  166     ISSN:  1573-2959     ISO Abbreviation:  Environ Monit Assess     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-24     Completed Date:  2010-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508350     Medline TA:  Environ Monit Assess     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  113-24     Citation Subset:  IM    
Affiliation:
Embrapa Cerrados, BR-020 km 18, CEP 73301-970, Planaltina, Distrito Federal, Brazil. sano@cpac.embrapa.br
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MeSH Terms
Descriptor/Qualifier:
Brazil
Environmental Monitoring*
Geography*
Plants / classification,  growth & development
Tropical Climate*

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