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Abstract
The objective of the present study was to describe the relationships between soil physical properties and to identify variables that determine the pore system and hydrological functions which are specifically important in drought prone semiarid marginal croplands. We compared Mollisols under natural vegetation (NV) with their agriculture (AG) pairs in the central Argentinean Dry Pampas to obtain the range of values for variables that characterize the soil [ver mas...]
dc.contributor.authorFernandez, Romina
dc.contributor.authorBelmonte, Valeria
dc.contributor.authorQuiroga, Alberto Raul
dc.contributor.authorLobartini, Carlos
dc.contributor.authorNoellemeyer, Elke
dc.date.accessioned2021-05-04T14:44:44Z
dc.date.available2021-05-04T14:44:44Z
dc.date.issued2021-06-01
dc.identifier.issn2352-0094
dc.identifier.otherhttps://doi.org/10.1016/j.geodrs.2021.e00394
dc.identifier.urihttp://hdl.handle.net/20.500.12123/9261
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S2352009421000390
dc.description.abstractThe objective of the present study was to describe the relationships between soil physical properties and to identify variables that determine the pore system and hydrological functions which are specifically important in drought prone semiarid marginal croplands. We compared Mollisols under natural vegetation (NV) with their agriculture (AG) pairs in the central Argentinean Dry Pampas to obtain the range of values for variables that characterize the soil pore system. These were total carbon (OC), bulk density (BD), structural instability index (SII), volumetric weight of aggregates (VAW), total porosity (TP), macropores (Ma), saturated hydraulic conductivity (K), infiltration rate (IR), Dexter's S index (S), and least limiting water range (LLWR). To a depth of more than 23 cm, TP and Ma were considerably lower (~ 35% and 50% less, respectively) in AG versus NV. The changes in porosity and pore size resulted in 74% smaller IR and 65% lower K. The S index had mean values of 0.16 and 0.14 for the upper and middle layer respectively in NV; while for AG, these values were significantly lower (0.09 and 0.10, respectively). The LLWR was also lower in AG (21 and 59% less in the upper and middle layer, respectively), due to high soil resistance even at non-limiting BDs (1.17 and 1.32 g cm−3 for AG2 and AG1, respectively). Soil OC was positively correlated with TP, Ma, and S, and negatively correlated with BD and SII. Multiple regression models for S included SII, TP, and clay contents, while for LLWR the variables were OC, TP, and clay plus silt. Thus, these complex soil quality indices can be predicted by using simpler physical parameters, but texture and organic matter also have a strong effect on them. Moreover, our results contribute to a better understanding of the role of texture and organic matter in controlling soil physical quality and for maintaining soil-based ecosystem services.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.relationinfo:eu-repograntAgreement/INTA/2019-PE-E2-I042-001/2019-PE-E2-I042-001/AR./Uso y gestión eficiente del Agua en Sistemas de Secanoes_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceGeoderma Regional 25 : e00394 (junio de 2021)es_AR
dc.subjectSueloes_AR
dc.subjectFisica del Sueloes_AR
dc.subjectUtilización de la Tierraes_AR
dc.subjectMolisoleses_AR
dc.subjectPorosidad del Sueloes_AR
dc.subjectInfiltraciónes_AR
dc.subjectConductividad Hidráulicaes_AR
dc.subjectSoileng
dc.subjectSoil Physicseng
dc.subjectLand Useeng
dc.subjectMollisolseng
dc.subjectSoil Porosityeng
dc.subjectInfiltrationeng
dc.subjectHydraulic Conductivityeng
dc.titleLand-use change affects soil hydro-physical properties in Mollisols of semiarid Central Argentinaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Anguiles_AR
dc.description.filFil: Fernández, Romina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Belmonte, Valeria. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentinaes_AR
dc.description.filFil: Quiroga, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Lobartini, Carlos. Universidad Nacional del Sur. Departamento de Agronomía; Argentinaes_AR
dc.description.filFil: Noellemeyer, Elke. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentinaes_AR
dc.subtypecientifico


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