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Engenharia Agrícola

Print version ISSN 0100-6916On-line version ISSN 1809-4430

Abstract

CARVALHO, Daniel C. De; PESSOA, Mayara M. De L.; PEREIRA, Marcos G.  and  DELGADO, Rafael C.. EVOLUTION OF CERRADO VEGETAL COVER ON A RIVER ISLAND BASED ON ORBITAL IMAGING DATA. Eng. Agríc. [online]. 2016, vol.36, n.6, pp.1186-1197. ISSN 1809-4430.  https://doi.org/10.1590/1809-4430-eng.agric.v36n6p1186-1197/2016.

This study aimed to assess vegetal cover evolution on a river island within the Ecological Station of (EEP), by remote sensing. For this purpose, Normalized Difference Vegetation Indexes were generated for Landsat 1 (1973) and Landsat 5 (1984, 1990, 2000 and 2011) images. Five landscape units were identified in the field: bare soil, Rough savanna, Typical savanna, Forested savanna and Evergreen dry woods. Only Forested savanna and Evergreen dry woods showed poor spectral splitting, being thus considered as a forestry complex. Changes throughout time have occurred in all units, with decreasing in bare soil areas (-2.56 ha year−1), Rough savanna (-0.66 ha year−1) and Typical savanna (-0.94 ha year−1) and with an increase in the Forested savanna (5.97 ha year−1). Thus, the method used in this study was effective for sorting and assessing plant cover of the landscape units studied over time.

Keywords : remote sensing; environmental monitoring; vegetation index.

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