Black carbon contribution in volcanic soils affected by wildfire or stubble burning

Rivas, Yessica; Matus, Francisco; Rumpel, Cornélia; Knicker, Heike; Garrido, Estrella

doi:10.1016/j.orggeochem.2012.03.007

Cited by 18 publications

(17 citation statements)

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“…Here, more C seems to be stored at lower altitudes. As observed in the field, charcoal (macrocharcoal) was able to migrate through macropores to deeper layers due to a good aeration and infiltration rate of volcanic soils (Rivas et al, 2012). Combustion material from the topsoil was probably exported into deeper horizons by water percolation, mesofauna activity, and other causes that finally increases the C stocks in the subsoil, a mechanism that has been observed also in other areas (Djukic et al, 2010;González-Pérez et al, 2004;Knicker, 2011;Rumpel et al, 2004;Schmidt and Noack, 2000).…”

Section: Carbon and Nitrogen In Bulk Soil And Density Fractionsmentioning

confidence: 55%

Effects of fire on soil organic matter quality along an altitudinal sequence on Mt. Etna, Sicily

Mastrolonardo

Certini

Krebs

et al. 2013

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Soil organic matter (SOM) can directly be affected by wildfires, both in terms of quantity and quality. The combustion is often incomplete, leading to the formation of pyrogenic organic matter (PyOM), a highly heterogeneous material with prevailing aromatic nature. Focusing our attention on PyOM, we investigated an altitudinal soil sequence on Mount Etna, Italy, ranging from 500 m to 1800 m asl, where the fire frequency is assumed to have been higher at lower elevations due to a warmer and drier climate. We evaluated the effect of fire on the chemical and physical characteristics of SOM along the altitudinal sequence. At two sites at a similar altitude but having a different recent fire history, we also examined the effect of fire frequency on SOM. Chemical oxidation of SOM with acid dichromate was used to evaluate the contribution of pyrogenic organic carbon to total SOC. Furthermore, four SOM density fractions were separated and characterised for principal composition, spectroscopic properties by Diffuse Reflectance Infrared Fourier Transform (DRIFT) and Nuclear Magnetic Resonance (NMR), and particle morphology by Scanning Electron Microscopy (SEM). The stocks of C and N as well as the chemical oxidation resistant carbon (COREC) increased with decreasing altitude, hence supporting the hypothesis of higher fire frequency at lower altitudes. The highest C concentrations were found in the density fraction 1.0-1.6 g cm³. At the lower sites, a considerable amount of aromatics, and hence a significant part of COREC, was found in the density fraction 1.0-1.6 g cm³ except for (macro)charcoal that occurs in the lightest fraction (b 1.0 g cm³). The properties of this latter density fraction seemed to be well related to vegetation characteristics. The dichromate oxidation procedure, however, has methodological restrictions. This procedure resulted here to be poorly specific for PyOM in the investigated soils, since it isolated a fraction rich in lipids. The lack of specificity for PyOM is most likely due to the rather low content of aromatics in SOM, although fire frequency was relatively high. Soil organic matter (SOM) can directly be affected by wildfires, both in terms of quantity and quality. The combustion is often incomplete, leading to the formation of pyrogenic organic matter (PyOM), a highly heterogeneous material with prevailing aromatic nature. Focusing our attention on PyOM, we investigated an altitudinal soil sequence on Mount Etna, Italy, ranging from 500 m to 1800 m asl, where the fire frequency is assumed to have been higher at lower elevations due to a warmer and drier climate. We evaluated the effect of fire on the chemical and physical characteristics of SOM along the altitudinal sequence. At two sites at a similar altitude but having a different recent fire history, we also examined the effect of fire frequency on SOM. Chemical oxidation of SOM with acid dichromate was used to evaluate the contribution of pyrogenic organic carbon to total SOC. Furthermore, four SOM density fractions were sep...

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Section: Carbon and Nitrogen In Bulk Soil And Density Fractionsmentioning

confidence: 55%

Effects of fire on soil organic matter quality along an altitudinal sequence on Mt. Etna, Sicily

Mastrolonardo

Certini

Krebs

et al. 2013

CATENA

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“…El pH al agua de determinó en una relación suelo-solución 1:2.5. El pH del suelo es ácido, variando entre 4,9 a 5,4 a la misma profundidad (mayor información en Rivas et al 2012a).…”

Section: Métodosunclassified

“…Suelos expuestos a una mayor severidad del fuego presentaron una mayor participación de grupos aromáticos (lignina, ´black carbon´, y otros similares). Por el contrario, aquellos suelos expuestos a una menor severidad del fuego, mostraron una disminución en la participación de aquellos grupos más aromáticos y un aumento en la concentración de los grupos C-alquílico (ceras, lípidos, entre otros), principalmente en los primeros 10 cm de profundidad (mayor información en Rivas et al 2012a). …”

Section: Contenido De Grsp Y Análisis Elementalunclassified

“…Esta adaptación morfológica de las plántulas del área quemada podría estar asociada, a algunos factores abióticos como la baja disponibilidad de agua producto de un aumento en la hidrofobicidad, cambios en las propiedades físico-químico de la materia orgá-nica del suelo y otros efectos importantes del fuego sobre el suelo. Principalmente, sobre los primeros horizontes del suelo (Knicker et al 2007b, Rivas et al, 2012a. Es importante destacar el establecimiento rápido y abundante de la especie herbáceas Alstroemeria sp.…”

Section: Severidad Del Fuegounclassified

“…En el presente estudio, se encontró una fuerte y directa correlación entre la concentración de GRSP total, el carbono total del suelo y principalmente con los grupos funcionales alquílicos; compuestos generalmente por macromoléculas alifáticas tales como: ceras, lípidos, ácidos grasos, suberina, resina y diversas glicoproteínas, entre otros compuestos. En el estudio de Rivas et al (2012a) se concluyó que los grupos alifáticos se oxidaron en menor grado que cualquier otro grupo funcional, enfatizando la importancia de la preservación de los grupos alquílicos en los sitios quemados respecto al área no afectada por el fuego, lo cual se corrobora con los altos niveles de GRSP encontrados en todos los sitios de este estudio. Por otro lado, se evidenció una correlación significativa e inversa entre la concentración de GRSP y los grupos aromáticos.…”

Section: Profundidad (Cm)unclassified

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Variación en el contenido de glomalina relacionada a las proteínas del suelo, después de un incendio forestal en un Andisol en bosques de Araucaria araucana del centro-sur de Chile

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A Comparative Study of Long‐Term Effects on Fire‐Affected Volcanic Soils in Two Different Ecosystems in the Canary Islands

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Volcanic soils have unique properties that can be specifically affected by fire. In this work, we use a chronosequence approach to investigate the long‐term effects of wildfires on the surface and topsoil (0–30 cm) of volcanic soils in two different ecosystems: the Canary pine forest (dry and fire‐adapted) and the laurel forest or monteverde (subhumid and not prone to fire). Redundancy analysis and partial Kendall's correlation were used to analyse the relationship between soil characteristics and the wildfire chronosequences, controlling most significant environmental variables. No long‐term effects of fire were observed on the pine forest topsoil, but strongly persistent erosion‐related features were found on the soil surface, suggesting that chronic erosion might occur as a result of increased wildfire frequency. The soils of the monteverde were affected over the long term by severe losses of organic matter including highly humified and complexed forms. Organic losses appeared to be mainly due to erosion and associated with decreases in water‐holding capacity and in the levels of organo‐complexed metals and bioavailable nutrients such as boron or zinc. Fire also led to decreased bioavailability of some nutrients (e.g. phosphorus) and increased release of other elements (e.g. silicon), most likely by exposing surfaces of short‐range‐order minerals. Better management is needed to reduce irreversible effects of severe wildfires on these soils. Copyright © 2015 John Wiley & Sons, Ltd.

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Black carbon contribution in volcanic soils affected by wildfire or stubble burning

Cited by 18 publications

References 50 publications

Effects of fire on soil organic matter quality along an altitudinal sequence on Mt. Etna, Sicily

Effects of fire on soil organic matter quality along an altitudinal sequence on Mt. Etna, Sicily

Variación en el contenido de glomalina relacionada a las proteínas del suelo, después de un incendio forestal en un Andisol en bosques de Araucaria araucana del centro-sur de Chile

A Comparative Study of Long‐Term Effects on Fire‐Affected Volcanic Soils in Two Different Ecosystems in the Canary Islands

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