Abstract

GOMES DE OLIVEIRA, Pedro Paulo et al. Discrimination of vegetation cover in a region of the Cerrado of Mato Grosso through the normalized difference vegetation index. Investig. Agrar. [online]. 2022, vol.24, n.2, pp.86-94. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2022.diciembre.2402717.

In recent decades, the intensification of the process of replacing the natural vegetation of the Cerrado by areas associated with human activities has caused great impacts on landscapes, in this sense, understanding the dynamics of different environmental systems because of the impacts caused by climate variability and action human, has been the effort of several researchers. Thus, the present work aimed to evaluate the potential of the normalized difference vegetation index (NDVI) applied to LANDSAT 8 satellite images to discriminate vegetation classes in the wet and dry period in a Cerrado region of Mato Grosso. The NDVI values were obtained through the ratio between the difference between the near infrared (ρIV) and red (ρV) reflectivity’s, and the data were processed in the QGIS program version 3.10. The results of this research allow us to conclude that the NDVI vegetation index used allowed the analysis of the vegetation dynamics in Vale do São Lourenço - MT. The vegetation of the study area behaved according to the availability of water in the soil profile, with higher values of the vegetation index in the rainy season and low photosynthetic activity in the dry season.

Keywords : NDVI; Remote sensing; GIS.

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