Padrões de distribuições espaciais e temporais de temperaturas associados ao bioma Cerrado

Resumo

The occurrence of vegetation is an important factor regarding the maintainance of natural biogeochemical processes. In the Cerrado, the conversion of the vegetative cover into crop fi elds and areas of cultivated pastures has induced severe modifi cations in biophysical variables such as land surface temperatures, highly sensitive to land cover / land use changes. Thus, and aiming at a more thorough understanding of the land conversion impacts on the Cerrado biophysical variables, in this study we assessed, through orbital data (MOD 11 product - Land Surface Temperature), the correlation between land occupation and thermal variability, considering 2003 imagery obtained at the beginning and end of the dry season. Data analysis showed signifi cant differences in surface temperature between natural and converted classes and revealed the spatial patterns and dependency of this variable in relation to seasonality.

Descrição

Palavras-chave

Cerrado, Temperatura de superfície, MODIS, Surface temperature

Citação

SANTOS, Nieali Bleyer Ferreira dos; FERREIRA JÚNIOR, Laerte Guimarães; FERREIRA, Nilson Clementino. Padrões de distribuições espaciais e temporais de temperaturas associados ao bioma Cerrado. Mercator, Fortaleza, v. 10, n. 21, p. 189-203, jan./abr. 2011