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- Title
Análise de índices biofísicos a partir de imagens TM Landsat 5 em paisagem heterogênea no Sudoeste da Amazônia.
- Authors
Tartari, Rodrigo; Gomes Machado, Nadja; Rodrigues dos Anjos, Marcelo; da Cunha, José Maurício; De Musis, Carlo Ralf; de Souza Nogueira, José; Sacardi Biudes, Marcelo
- Abstract
The southwest area of the Brazilian Amazon is composed of a landscape mosaic with transition grasslands and tropical rain forest. The basin of the Puruzinho River, located in the "Arc of Deforestation" in the Purus-Madeira interfluve, has undergone changes in land use and land cover. The objective of this study was to evaluate the spatial variation of biophysical indices of a heterogeneous landscape in the Basin of Puruzinho River. The normalized difference vegetation index (NDVI), leaf area index (LAI), surface temperature, surface albedo and surface net radiation (Rn) were estimated by SEBAL (Surface Energy Balance Algorithm for Land) from TM Landsat 5 images, and analyzed on areas of dense forest, grasslands, deforested area and urban area of Humaitá-AM. All biophysical indices were significantly different considering the land use and land cover. The biophysical indices showed an opposite pattern between the urban area and the dense forest, with lower NDVI, IAF and net radiation and higher surface temperature and surface albedo in the urban area. Therefore, the variables estimated by SEBAL were adequate to assess the effect of land use changes on the estimated variables and to distinguish disturbed areas from natural areas.
- Publication
Revista Ambiente e Água, 2015, Vol 10, Issue 4, p943
- ISSN
1980-993X
- Publication type
Article
- DOI
10.4136/ambi-agua.1663