Mostrar el registro sencillo del ítem

resumen

Resumen
Soil degradation has been frequently evaluated by comparing cultivated soils with paired reference pedons. Evaluated were some physical and chemical properties of cultivated and reference soils of a semiarid environment in a nine year period in order to evaluate possible changes in both management situations. Analyzed were seven degraded soils of variable textures, which are cultivated since more than 50 years, and seven paired neighbor pedons placed in [ver mas...]
dc.contributor.authorIturri, Laura Antonela
dc.contributor.authorAvecilla, Fernando
dc.contributor.authorHevia, Graciela Gloria
dc.contributor.authorBuschiazzo, Daniel Eduardo
dc.date.accessioned2018-11-07T14:13:01Z
dc.date.available2018-11-07T14:13:01Z
dc.date.issued2016-02
dc.identifier.issn0016-7061
dc.identifier.otherhttps://doi.org/10.1016/j.geoderma.2015.09.017
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3809
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0016706115300926?via%3Dihub
dc.description.abstractSoil degradation has been frequently evaluated by comparing cultivated soils with paired reference pedons. Evaluated were some physical and chemical properties of cultivated and reference soils of a semiarid environment in a nine year period in order to evaluate possible changes in both management situations. Analyzed were seven degraded soils of variable textures, which are cultivated since more than 50 years, and seven paired neighbor pedons placed in the less disturbed Caldenal savanna-like ecosystem of the central semiarid region of Argentina. Results indicated that soil properties of both, cultivated and reference soils changed in this period. The driving factor of these changes was wind erosion, which produced a decrease in the proportion of the fine sized particles (silt and clay) in cultivated soils due to deflation processes, and an increase in reference soils due to the sedimentation of material transported from neighbor eroded soils. Medium textured soils (loamy sand) suffered the largest textural changes in agreement with more aggressive management practices that promoted wind erosion. The coarsest- (sandy) and the finest textured soils (sandy loam) did not show textural changes because they were managed with more conservative practices and were more resistant against erosion than medium textured soils. Under the moist conditions of the studied period contents of total carbon (OC), total carbohydrates (CHt) and nitrogen (N) increased by 50% in most reference soils. Cultivated soils presented 64% less OC, CHt and N than reference soils, but these differences were produced mainly by increases in reference soils rather than by decreases in cultivated soils. The C/N and C/CHt ratios decreased mainly in medium textured cultivated soils. The wind erodible fraction (EF, the < 0.84 mm sized aggregates) showed increases mainly in medium textured cultivated soils and decreases in all reference soils. This was associated with losses of the fine textural fractions and OC in cultivated soils and their increase in reference. Values for pH were higher only in some cultivated soils compared with reference pairs, but such differences were produced mainly by pH decreases in reference soils rather than by increases in the cultivated soils. The comparison of contrasting management systems considering that reference soils remain unchanged, may lead to overestimations of OC, CHt, N, EF and pH variations occurring in cultivated soils of 20 to 123%. Variations of C/N and C/CHt can be underestimated by 5 to 20%. We concluded that the simple comparison of cultivated and reference soils can lead to important errors in measuring soil degradation in semiarid environments. This may happen if changes eventually occurring in reference soils are not considered.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.sourceGeoderma 264, Part A : 42-53. (15 February 2016)eng
dc.subjectErosión Eólicaes_AR
dc.subjectWind Erosioneng
dc.subjectDegradación del Sueloes_AR
dc.subjectSoil Degradationeng
dc.subjectSemiarid Climateeng
dc.subjectClima Semiáridoes_AR
dc.subjectSuelos Cultivableses_AR
dc.subjectArable Soilseng
dc.subjectSuelos Vírgeneses_AR
dc.subjectVirgin Soilseng
dc.subjectMediciónes_AR
dc.subjectMeasurementeng
dc.titleComparing adjacent cultivated and “virgin” soils in wind erosion affected environments can lead to errors in measuring soil degradationeng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.description.origenEEA Anguiles_AR
dc.description.filFil: Iturri, Laura Antonela. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentinaes_AR
dc.description.filFil: Avecilla, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentinaes_AR
dc.description.filFil: Hevia, Graciela Gloria. Universidad Nacional de La Pampa; Argentinaes_AR
dc.description.filFil: Buschiazzo, Daniel Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentinaes_AR
dc.subtypecientifico


Ficheros en el ítem

Thumbnail

Este ítem aparece en la(s) siguiente(s) colección(ones)

common

Mostrar el registro sencillo del ítem

info:eu-repo/semantics/openAccess
Excepto si se señala otra cosa, la licencia del ítem se describe como info:eu-repo/semantics/openAccess