Neutral Sugar Content and Composition as a Sensitive Indicator of Fire Severity in the Andisols of an Araucaria–Nothofagus Forest in Southern Chile

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dc.contributor.authorRivas, Yessica
dc.contributor.authorRetamal-Salgado, Jorge
dc.contributor.authorKnicker, Heike
dc.contributor.authorMatus, Francisco
dc.contributor.authorRivera, Diego
dc.date.accessioned2021-12-14T19:00:20Z
dc.date.available2021-12-14T19:00:20Z
dc.date.issued2021
dc.description.abstractWildfire induces soil alterations that have a long-term impact on soil organic matter (SOM) quality. We postulated that after different fire severities, the neutral sugars in soils can be used as an indicator of soil organic matter quality after fire. The aim of this study was to determine the contribution of neutral sugar, bulk and occluded particulate organic matter (oPOM) affected by wildfire, at different soil depths in an Araucaria–Nothofagus Forest, four years post-after fire. The concentration and composition of the neutral sugars in the soils clearly comprised the major fraction in the unburned soil. Medium- and high-severity fires caused a drastic reduction in soil sugars in the bulk soil as well as in the oPOM fractions. The 13C-CPMAS NMR spectroscopy analysis revealed a high contribution of recalcitrant carbon to the decomposition such as aryl–C and aryl–O derived from charred material, whereas the abundance of O–alkyl C and alkyl C functional groups were decreased. The neutral sugars (Galactose+Mannose/Xilose+Arabinose) revealed a major microbial origin in fire affected areas as the ratio was >2. Therefore. Therefore, we suggest that the neutral sugar content of soil should be used for monitoring both short- and long-term changes in SOM altered by fireses
dc.identifier.citationRivas, Y.; Retamal-Salgado, J.; Knicker, H.; Matus, F.; Rivera, D. Neutral Sugar Content and Composition as a Sensitive Indicator of Fire Severity in the Andisols of an Araucaria–Nothofagus Forest in Southern Chile. Sustainability 2021, 13, 12061. https://doi.org/10.3390/ su132112061es
dc.identifier.urihttps://doi.org/10.3390/ su132112061es
dc.identifier.urihttp://hdl.handle.net/11447/5239
dc.language.isoenes
dc.subjectNon-cellulosic carbohydrateses
dc.subject13C NMRes
dc.subjectForest fireses
dc.subjectoPOM fractionses
dc.titleNeutral Sugar Content and Composition as a Sensitive Indicator of Fire Severity in the Andisols of an Araucaria–Nothofagus Forest in Southern Chilees
dc.typeArticlees
dcterms.sourceSustainabilityes

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