162841 20251017144655.0 doi 10.3390/fire8070277 sideral 145304 ART-2025-145304 eng Erazo, Karla The Effects of Burning Intensity on the Soil C-Related Properties and Mineralogy of Two Contrasting Forest Soils from Chilean National Parks 2025 Access copy available to the general public Unrestricted Forest fires alter multiple soil properties, from those related to the carbon cycle to mineralogy; however, the responses of various soils to thermal impact remain unclear. This study examined the impact of fire-induced heating (300, 600, and 900 °C) on the properties of two contrasted soils (Andisol and Inceptisol) with regard to soil organic carbon (SOC), total organic carbon (TOC), dissolved organic carbon (DOC), recalcitrant organic carbon (ROC), soil pH, electrical conductivity (EC), soil water repellency (SWR), soil aggregate stability (SAS), and mineralogy using X-ray diffraction (XRD). SOC and TOC decreased as temperatures increased, with a more pronounced decrease in Andisol (90% loss) than in Inceptisol (80% loss). DOC and SWR peaked at 300 °C but disappeared above 600 °C. Further, ROC increased at 300 °C in both soils, but behaved differently at higher temperatures, remaining stable in Inceptisol and being eliminated in Andisol. Soil pH increased at 600 and 900 °C; meanwhile, EC increased progressively in Andisol but peaked at 300 °C in Inceptisol. SAS remained high in both soils (between 85 and 95%) despite heating. The mineralogical analysis demonstrated how heating induced transformations in iron minerals into more oxidized forms (as hematite and maghemite) in the Andisol, while clay minerals and gibbsite decreased feldspar and quartz accumulation promotion in the Inceptisol. In summary, the initial properties of each soil influenced their respective responses to fire. info:eu-repo/grantAgreement/ES/DGA/S51-23R info:eu-repo/grantAgreement/ES/MCIU/PID2021-123127OB-I00 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Martí-Dalmau, Clara Universidad de Zaragoza (orcid)0000-0003-0630-1181 Badía-Villas, David Universidad de Zaragoza (orcid)0000-0002-1006-5030 Quintana-Esteras, Silvia Universidad de Zaragoza Bauluz, Blanca Universidad de Zaragoza (orcid)0000-0002-4970-6333 Merino, Carolina 2008 700 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Producción Animal 5011 705 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Área Producción Vegetal 5011 240 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Área Edafología y Quím.Agríco. 2000 120 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Cristalografía Mineralog. 8, 7 (2025), 277 [18 pp.] Fire Fire (Basel) 2571-6255 2831522 http://zaguan.unizar.es/record/162841/files/texto_completo.pdf Versión publicada 2495887 http://zaguan.unizar.es/record/162841/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:162841 articulos driver 2025-10-17-14:37:54 ARTICLE