Padrões de distribuições espaciais e temporais de temperatura de superfície no bioma Cerrado: uma análise integrada a partir de dados orbitais de resolução moderada
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| Autor principal: | |
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| Data de publicació: | 2010 |
| Format: | Doctoral thesis |
| Idioma: | por |
| Font: | Repositório Institucional da UFG |
| Download full: | http://repositorio.bc.ufg.br/tede/handle/tde/338 |
Sumari: | 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 croplands and cultivated pasturelands has induced severe modifications in biophysical variables such as land surface temperatures, highly sensitive to land cover / land use changes. Thus, and aiming at a more complete 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. In particular, we investigated the LST behavior in relation to the major Cerrado land cover classes, as well as its response to the ongoing clearings. Our results confirmed higher temperatures over anthropic areas, as well as significant increases immediately following deforestations. |