Perspective of soil carbon sequestration in Chilean volcanic soils

Autor: Francisco Matus, Osvaldo Salazar, Felipe Aburto, Denisse Zamorano, Francisco Nájera, Radmila Jovanović, Catalina Guerra, Luis Reyes-Rojas, Oscar Seguel, Marco Pfeiffer, José Dörner, Susana Valle, Sergio Radic-Schilling, Efraín Duarte
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Materials Sustainability, Vol 2, Iss 1, Pp 1-7 (2024)
Druh dokumentu: article
ISSN: 2948-1775
85214078
DOI: 10.1038/s44296-024-00038-4
Popis: Abstract We analysed a large dataset consisting of 457 soil profiles of Andisols and Ultisols of volcanic origin compared to 60 non-volcanic soils. We hypothesised that soil pH has a greater impact on the development of Al-organomineral complexes in volcanic soils compared to non-volcanic soils, in the latter, the silt and clay fractions play a crucial role. Soil pH >4.5 strongly influenced the formation of Al-organomineral complexes in volcanic soils, while an increase in allophane content led to a decrease in SOC. Ultisols with more crystalline clays, such as halloysite and disordered kaolinite, the pH had a weaker impact and there was no effect on non-volcanic soils. Instead, a positive correlation (R2 = 0.63, p
Databáze: Directory of Open Access Journals
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