Discrimination of vegetation cover in a region of the Cerrado of Mato Grosso through the normalized difference vegetation index ; Discriminación de la cobertura vegetal en una región de sabana en Mato Grosso utilizando el índice de vegetación de diferencia normalizada ; Discriminação da cobertura vegetal em uma região do Cerrado mato-grossense por meio do índice de vegetação por diferença normalizada
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 r... Mehr ...
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| Dokumenttyp: | Artikel |
| Erscheinungsdatum: | 2023 |
| Verlag/Hrsg.: |
Facultad de Ciencias Agrarias de la Universidad Nacional de Asunción
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| Schlagwörter: | NDVI / Sensoriamento Remoto / SIG / Remote sensing / GIS |
| Sprache: | Portuguese |
| Permalink: | https://search.fid-benelux.de/Record/base-27644241 |
| Datenquelle: | BASE; Originalkatalog |
| Powered By: | BASE |
| Link(s) : | https://www.agr.una.py/revista/index.php/ria/article/view/717 |
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. ; En las últimas décadas, la intensificación del proceso de sustitución de la vegetación natural del Cerrado por áreas asociadas a las actividades humanas ha causado grandes impactos en los paisajes, en este sentido, la comprensión de la dinámica de los diferentes sistemas ambientales debido a los impactos causados por la variabilidad climática y la acción humana, ha sido el esfuerzo de varios investigadores. Así, el presente trabajo tuvo como objetivo evaluar el potencial del índice de vegetación de diferencia normalizada (NDVI) aplicado a las imágenes del satélite LANDSAT 8 para discriminar las clases de vegetación en el período húmedo y seco en una región del Cerrado de Mato Grosso. Los valores del NDVI se obtuvieron a través de la relación entre la diferencia de la reflectividad del infrarrojo cercano (ρIV) y del rojo (ρV), y los datos ...