Remote sensing applied for indicators of desertification in Parelhas –RN

Authors

  • Paulo Igor de Melo Albuquerque Universidade do Estado do Rio Grande do Norte - Campus Central - UERN
  • João Paulo Bezerra Rodrigues UERN - Campus Central
  • Filipe da Silva Peixoto UERN
  • Mateus de Paula Miranda UFC

DOI:

https://doi.org/10.51359/2238-6211.2020.239097

Keywords:

NDVI; geotechnologies; vegetation cover.

Abstract

IThis study aims to characterize and map the areas where there are desertification pro-cesses is more advanced in Parelhas-RN, Northwest of Brazil. For this, we collected images of the satellite Landsat -8, OLI, dated 09/29/2016 and 06/12/2017, correspond-ing to the final period, and end of the rainy season, respectively. The preprocessing pro-cedure was constructed: radiometric correction, atmospheric correctionand band fusion for the refinement of spatial resolution to 15 meters. We applied the Normalizing Differ-ence Vegetation Index -NDVI to identify the areas of greatest photosynthetic activity of the vegetation, as well as to measure the potential phytostabilizer in the environment. For the calibration of the image classification, scores of 9 control points that had differ-ent values of NDVI. We identified a desertification process advanced that allowed for vectorization and mapping. Other topics that replenished NDVI were expanding at high (> 0.21) the known to plant phytoestabiliator of the vegetation, preventing a high rate of erosion and removed the superficial layers and horizons. The methodology applied ena-bles to produce refined information on a desertification, beyond, may monitoring and generate subsidies for environmental recovery.ncluir o abstract

Author Biographies

Paulo Igor de Melo Albuquerque, Universidade do Estado do Rio Grande do Norte - Campus Central - UERN

Graduado em Geografia pela Universidade do Estado do Rio Grande do Norte - UERN

João Paulo Bezerra Rodrigues, UERN - Campus Central

Graduado em Geografia pela Universidade do Estado do Rio Grande do Norte; Especialista em Geografia do Nordeste - UERN

References

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AMORIM, I. L. B.; Sampaio, E. V. S.; Araújo, E. L. Flora e estrutura da vegetação arbustivo-arbórea de uma área de caatinga do Seridó, RN, Brasil. Acta Botânica Brasílica, 19 (3), 615-623, 2005.

ANDRADE, L.A. de. Impactos da invasão de Prosopis juliflora (sw.) DC. (Fabaceae) sobre o estrato arbustivo-arbóreo em áreas de Caatinga no Estado da Paraíba, Brasil. in Acta Scientiarum. Biological Sciences-Maringá, 32 (3) 249-255, 2010.

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Published

2020-03-26

How to Cite

de Melo Albuquerque, P. I., Bezerra Rodrigues, J. P., Peixoto, F. da S., & Miranda, M. de P. (2020). Remote sensing applied for indicators of desertification in Parelhas –RN. Geography Magazine, 37(1), 241–261. https://doi.org/10.51359/2238-6211.2020.239097

Issue

Vol. 37 No. 1 (2020): Revista de Geografia (Recife)

Section

Artigo Científico

License

Copyright (c) 2021 Paulo Igor de Melo Albuquerque, João Paulo Bezerra Rodrigues, Filipe da Silva Peixoto, Mateus de Paula Miranda

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