Soil organic matter and vegetation indices in a semi-arid preserved area of Brazil

Soil organic matter and vegetation indices in a semi-arid preserved area of Brazil

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DOI:

https://doi.org/10.21680/2447-3359.2026v12n1ID41445

Abstract

Abstract: Preserved areas play a critical role in sustaining ecosystem resilience and carbon dynamics, particularly in semi-arid regions. Here, we quantified soil organic matter (SOM) at different depths, examined its relationship with soil pH, and assessed vegetation cover using NDVI and CO₂Flux indices in a preserved area of Princesa Isabel, Paraíba, Brazil. Soil samples were collected at 0–10 and 10–20 cm and analyzed for SOM and pH, while Sentinel-2 imagery was processed on the Google Earth Engine platform. Higher SOM concentrations were observed in the surface layer, reflecting litter input and biological activity. A significant positive correlation with pH (r = 0.87) indicated enhanced nutrient availability. Vegetation indices revealed dense canopy cover (NDVI up to 0.78) and substantial carbon sequestration potential (CO₂Flux down to –0.31). These findings demonstrate that combining laboratory analyses with remote sensing provides a robust approach for monitoring soil–vegetation interactions, highlighting the strategic role of preserved areas in enhancing ecological resilience and contributing to climate change mitigation.

Keywords: Chemical attributes; Vegetation cover; Remote sensing.

 

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Published

14-05-2026

How to Cite

CARDOSO, Marcela da Cruz; ARAÚJO, Adriana Oliveira; SILVA, Wemerson Leonardo Cruz da; ALBUQUERQUE, Erickson Melo de; DINIZ, João Abílio; SILVA, Anne Cristine Fortes da. Soil organic matter and vegetation indices in a semi-arid preserved area of Brazil: Soil organic matter and vegetation indices in a semi-arid preserved area of Brazil. Notheast Geoscience Journal, [S. l.], v. 12, n. 1, p. 325–339, 2026. DOI: 10.21680/2447-3359.2026v12n1ID41445. Disponível em: https://periodicos.ufrn.br/revistadoregne/article/view/41445. Acesso em: 6 sep. 2026.

Issue

Vol. 12 No. 1 (2026): Northeastern Geosciences Journal

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Artigos

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Copyright (c) 2026 Notheast Geoscience Journal

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