Aggregate Development and Organic Matter Storage in Mediterranean Mountain Soils

dc.contributor.authorPoch, Rosa M.
dc.contributor.authorAntúnez Pujol, Montserrat
dc.date.accessioned2021-02-09T12:19:11Z
dc.date.available2021-02-09T12:19:11Z
dc.date.issued2010-10-27
dc.description.abstractSoil aggregation and organic matter of soils from the pre-Pyrenean range in Catalonia (NE Spain) were studied, in order to assess their quality as carbon sinks and also to select the best soil management practices to preserve their quality. Aggregate stability, organic carbon and micromorphology were investigated. The highest amount of organic carbon was found in alluvial, deep soils (228 Mg C ha−1), and the lowest was in a shallow, stony soil with a low plant cover (78 Mg C ha−1). Subsurface horizons of degraded soils under pastures were the ones with smaller and less-stable aggregates. Fresh residues of organic matter (OM) were found mostly in interaggregate spaces. Within the aggregates there were some organic remains that were beginning to decompose, and also impregnative nodules of amorphous OM. Although OM was evenly distributed among the aggregate fractions, the larger blocky peds had more specific surface, contained less decomposed OM and had a lower organic/mineral interphase than smaller crumb aggregates, which were also more stable. Soil carbon storage was affected primarily by the OM inputs in the surface horizons. In order to store organic carbon over the mid- and long-term periods, the mechanisms favouring structuration through biological activity and creating small aggregates with intrapedal stable microporosities seemed to be the most effective.ca_ES
dc.identifier.doihttps://doi.org/10.1016/S1002-0160(10)60060-4
dc.identifier.idgrec016057
dc.identifier.issn1002-0160
dc.identifier.urihttp://hdl.handle.net/10459.1/70465
dc.language.isoengca_ES
dc.publisherSoil Science Society of Chinaca_ES
dc.publisherElsevierca_ES
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/S1002-0160(10)60060-4ca_ES
dc.relation.ispartofPedosphere, 2010, vol. 20, núm. 6, p. 702-710ca_ES
dc.rights(c) Soil Science Society of China. Published by Elsevier, 2010ca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.subjectAggregate stabilityca_ES
dc.subjectCataloniaca_ES
dc.subjectMacroaggregatesca_ES
dc.subjectOrganic carbonca_ES
dc.subjectSoil carbon storageca_ES
dc.titleAggregate Development and Organic Matter Storage in Mediterranean Mountain Soilsca_ES
dc.typeinfo:eu-repo/semantics/articleca_ES
dc.type.versioninfo:eu-repo/semantics/acceptedVersionca_ES
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