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dc.contributor.author
Broquen, Patricia Cecilia
dc.contributor.author
Candan, F.
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Lobartini, Juan Carlos
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Girardin, J. L.
dc.date.available
2019-03-27T19:23:16Z
dc.date.issued
2004-12
dc.identifier.citation
Broquen, Patricia Cecilia; Candan, F.; Lobartini, Juan Carlos; Girardin, J. L.; Relaciones entre el carbono orgánico y propiedades edáficas y del sitio en suelos derivados de cenizas volcánicas, sudoeste de Neuquén (Argentina); Asociación Argentina de la Ciencia del Suelo; Ciencia del Suelo; 22; 2; 12-2004; 73-82
dc.identifier.issn
0326-3169
dc.identifier.uri
http://hdl.handle.net/11336/72674
dc.description.abstract
An investigation was conducted to study the relationships between soil organic carbon and thoseproperties that may influence carbon accumulation in soils derived from volcanic ash through a rangeof bio-climatic conditions at the Andinopatagonian region in SW Neuquén, Argentina. Pedon andclimatic data of nineteen plots were used and grouped, through principal component analysis, by soilhydric regime –udic group (U) and xeric group (X)-. Within each group, a simple and a multipleregression analysis was carried out between organic C -content (t ha-1) or concentration (g kg-1)- andmean annual precipitation, bulk density, pH(H2O) and pH(NaF), oxalate extractable Al (Alo), pyro-phosphate-extractable Al (Alp), Alp/Alo, and Alo-Alp –the last four so as content or as concentra-tion. Mean annual precipitation, explained little variation in soil organic carbon in both groups (R2 =20), and bulk density was unrelated to soil organic carbon. Alp correlated strongly with organic Ccontent in both groups (U: R2 = 0.67, p<0.00001; X: R2 = 0.90, p<0.00001), but when expressed asconcentration Alp explanation was considerably lower (U: R2 = 0.10, p<0.02; X: R2 = 0.46, p<0.0006).When all factors were combined in a multiple regression analysis, the combination of Alp contents andmean annual precipitation, explained the greatest amount of variation in soil organic C content withinU group (R2U = 0.69, p<0.00001). According with previous studies, relationships between Alp/Alo or(Alp-Alo) and soil organic C were very poor, this confirms that organically bound Al in allophane isnot dominant. The fact that the better explanations were found when variables were expressed incontent rather than in concentration was probably due to the influence of specific area on humicmatter adsorption on volcanic ash soils. Our results suggested that in volcanic ash soils in SWNeuquén, Argentina, the chemical stabilization is the key process controlling soil organic C accumu-lation in some way independent of vegetation types.
dc.format
application/pdf
dc.language.iso
spa
dc.publisher
Asociación Argentina de la Ciencia del Suelo
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Carbon Sequestration
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Al-Humates
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Volcanic Ash
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Native Vegetation
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Ciencias Medioambientales
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Relaciones entre el carbono orgánico y propiedades edáficas y del sitio en suelos derivados de cenizas volcánicas, sudoeste de Neuquén (Argentina)
dc.title
Relationships between soil organic carbon and siteproperties in volcanic ash soils, southwestern Neuquén (Argentina)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-08T15:06:11Z
dc.identifier.eissn
1850-2067
dc.journal.volume
22
dc.journal.number
2
dc.journal.pagination
73-82
dc.journal.pais
Argentina
dc.journal.ciudad
Ciudad Autónoma de Buenos Aires
dc.description.fil
Fil: Broquen, Patricia Cecilia. Universidad Nacional del Comahue. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Candan, F.. Universidad Nacional del Comahue. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Lobartini, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina
dc.description.fil
Fil: Girardin, J. L.. Universidad Nacional del Comahue. Facultad de Ciencias Agrarias; Argentina
dc.journal.title
Ciencia del Suelo
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.suelos.org.ar/publicaciones/vol_22n%202/broquen_73-82.pdf
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.suelos.org.ar/sitio/volumen-22-numero-2-diciembre2004/
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