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Chemodiversity of Dissolved Soil Organic Matter from Amazon Rainforest as Influenced by Deforestation.

Authors :
Souza, Tancredo
Araujo, Damiana Justino
Cassimiro, Carlos Alberto Lins
Batista, Diego Silva
Source :
Metabolites (2218-1989); Mar2024, Vol. 14 Issue 3, p144, 10p
Publication Year :
2024

Abstract

Many biogeochemical processes are modulated by dissolved organic matter (DOM), but the drivers influencing the chemodiversity of DOM compounds in Amazonian soils are poorly understood. It has also been theorized whether deforestation controls the decline of DOM. In this study, we collected soil samples from thirty sites across different regions of Brazil's Legal Amazon, and we investigated the trade-offs among soil physical–chemical properties and DOM chemodiversity. We employed optical spectroscopy, Fourier transform ion cyclotron resonance, and multivariate analysis. Our results indicated that, despite variations in land use and soil physical–chemical properties, factors such as the deforested site, geometric mean diameter, weighted average diameter, and soil organic carbon were the main influencers of DOM chemodiversity variation. These findings highlight the importance of considering DOM chemodiversity as closely related to land use and its potential use in developing deforestation models for predicting soil quality decline in Brazil's Legal Amazon. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22181989
Volume :
14
Issue :
3
Database :
Complementary Index
Journal :
Metabolites (2218-1989)
Publication Type :
Academic Journal
Accession number :
176365768
Full Text :
https://doi.org/10.3390/metabo14030144