Show simple item record

resumen

Abstract
The objective of the study was to assess the effect of soil type, land-use and -management on root-C inputs and soil carbon storage in the central semiarid pampa region, Argentina. Twenty-one sites were assessed with different land uses (agriculture, natural grassland and pasture) and textures (sand, loamy sand, sandy loam and loam). Root and shoot biomass, and soil properties including texture, total C and N, particulate C, mineral associated C, pH, bulk [ver mas...]
dc.contributor.authorFrasier, Ileana
dc.contributor.authorQuiroga, Alberto Raul
dc.contributor.authorFernandez, Romina
dc.contributor.authorAlvarez, Cristian
dc.contributor.authorGomez, Florencia
dc.contributor.authorNoellemeyer, Elke
dc.contributor.authorScherger, Eric Daniel
dc.contributor.authorGili, Adriana
dc.date.accessioned2019-11-19T11:41:57Z
dc.date.available2019-11-19T11:41:57Z
dc.date.issued2019-09-01
dc.identifier.issn0167-1987
dc.identifier.otherhttps://doi.org/10.1016/j.still.2019.05.010
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0167198719302879
dc.identifier.urihttp://hdl.handle.net/20.500.12123/6319
dc.description.abstractThe objective of the study was to assess the effect of soil type, land-use and -management on root-C inputs and soil carbon storage in the central semiarid pampa region, Argentina. Twenty-one sites were assessed with different land uses (agriculture, natural grassland and pasture) and textures (sand, loamy sand, sandy loam and loam). Root and shoot biomass, and soil properties including texture, total C and N, particulate C, mineral associated C, pH, bulk density and available phosphorus were determined. Results showed that land use conditioned the magnitude of C input in the system while texture limited C storage. Higher root to shoot ratio (5.1–7.6:1) was observed in natural grassland than in pasture (2–4.2:1) and agriculture (0.6−1:1). Positive linear relationships were found between soil C and silt plus clay content with increments of C storage of 4, 2 and 1% under natural grassland, pasture and agriculture respectively. Linear and saturation models were performed for the relationship between soil organic matter and root-C for each soil type and the first 0.20m depth. Sandy loam soils achieved C saturation level at 65 Mg C ha−1 defined by maximum values under natural grasslands with C storage capacity of 34 Mg C ha−1. Soils with silt plus clay content lower than 20% (sand and loamy sand textures) also showed an upper limit of 16.6 Mg ha−1 (equivalent to 0.6% C). In contrast, loam soils showed no -saturating behavior (linear response) with increments of 14 Mg C ha−1 per unit of root-C input. Particulate C increased with increasing root-C inputs in loam and sandy loam soils with no change in mineral associated C. The rate at which root-C was transformed to particulate C was 11.8 and 7.3 Mg Cp Mg root-C−1 for loam and sandy loam soils respectively. Our results showed that soil type and climate are crucial for determining C sequestration capacity of soils, and root inputs, more than aboveground biomass, should be considered when deciding appropriate soil management for enhanced C storage.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceSoil & Tillage Research 192 : 134-143 (September 2019)es_AR
dc.subjectUtilización de la Tierraes_AR
dc.subjectCarbonoes_AR
dc.subjectSueloes_AR
dc.subjectLand Useeng
dc.subjectSoileng
dc.subjectCarboneng
dc.subject.otherRegión Pampeana Semiárida
dc.titleSoil type, land-use and -management as drivers of root-C inputs and soil C storage in the semiarid pampa region, 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.origenINTA. Centro Regional La Pampa - San Luis. Estación Experimental Agropecuaria Anguiles_AR
dc.description.filFil: Frasier, Ileana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Quiroga, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Fernandez, Romina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Alvarez, Cristian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Gomez, Florencia. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentinaes_AR
dc.description.filFil: Eric, Scherger. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentinaes_AR
dc.description.filFil: Noellemeyer, Elke. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentinaes_AR
dc.description.filFil: Gili, Adriana. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina
dc.subtypecientifico


Files in this item

Thumbnail

This item appears in the following Collection(s)

common

Show simple item record