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dc.contributor.authorLuna, Martín Alejandro-
dc.contributor.authorGalantini, Juan Alberto-
dc.contributor.authorSuñer, Liliana-
dc.contributor.authorZeberio, Juan Manuel-
dc.contributor.authorMartínez, Roberto Melchor-
dc.date.accessioned2022-09-14T13:28:58Z-
dc.date.available2022-09-14T13:28:58Z-
dc.date.issued2018-08-17-
dc.identifier.otherhttp://wcss.sbcs.org.br/docs/Proceedings_of_the_21WCSS_Volume_II.pdf-
dc.identifier.urihttp://rid.unrn.edu.ar/handle/20.500.12049/9090-
dc.language.isoenes_ES
dc.relation.urihttp://wcss.sbcs.org.br/index.phpes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/-
dc.titleVariations of organic carbon and phosphorus in arid-semiarid soils of Argentinaes_ES
dc.title.alternativeCarbon and phosphorus soiles_ES
dc.typeObjeto de conferenciaes_ES
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)-
dc.description.filiationGalantini, Juan Alberto. Universidad Nacional del Sur, Comisión de Investigaciones Científicas. Buenos Aires; Argentina.es_ES
dc.description.filiationLuna, Martín Alejandro. Universidad Nacional de Río Negro. Río Negro; Argentina.es_ES
dc.description.filiationSuñer, Liliana. Universidad Nacional del Sur. Departamento de Agronomía. Buenos Aires; Argentina.es_ES
dc.description.filiationZeberio, Juan Manuel. Universidad Nacional de Río Negro. Río Negro; Argentina.es_ES
dc.description.filiationMartínez, Roberto Melchor. Universidad Nacional de Río Negro. Río Negro; Argentina.es_ES
dc.subject.keywordOrganic matteres_ES
dc.subject.keywordSoiles_ES
dc.subject.keywordAnthropic usees_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.subject.materiaCiencias Agrariases_ES
dc.origin.lugarDesarrolloUniversidad Nacional de Río Negro. CIT - Sede Atlántica.es_ES
dc.description.resumenOrganic carbon (OC) and phosphorus (OP) are key elements of soil quality and health. Both are influenced by the input of organic material to the soil. The aim of this research was explored variations of OC and OP to different depth in natural soils of the Patagonian. Six sites were selected, from satellite images, with different type cover vegetation, of northeast Argentina (Lat. 40º-41º S; Long. 62º-63º W). The climate is arid-semiarid, with average precipitation and temperature of 400 mm and 14,5 °C respectively, and frequent winds. The vegetation that characterizes this area is of the typical Monte, with xerophyte species; shrub steppes with dominance of Larrea spp. (Zygophyllaceae) are the most common landscapes. The main soil orders are Aridisols and Entisols. Each site was classified in: forest (F), shrub (S) and shrub-forest (SF) according to their physiognomy, in all of them three plots of 10x10 m were delimited. Five soil samples were taken in each plot to different depths: 0-0.01; 0.01-0.05; 0.05-0.10; 0.10-0.30 and 0.30-0.60 m. All samples were wet sieving, obtaining two particle size fractions: between 2000-53, and lower than 53 µm. In each fraction the concentration of OC by humid combustion and OP by Saunders and Williams method was determined. The type of vegetation influenced on relationship between the most labile fractions (OC 2000-53) with respect to most stabilized ones (OC <53); this relationship in general was higher in the S, and in deeper layers these ratios were significantly different. In F were obtained 9.10 and 9.08 mg OC gr-1 soil for the 0.30 and 0.60 m. of depth; F presented a 75.5 and 123% more OC<53 that S in those depths, and SF an 8.5 and 48% less. Whereas, OC 2000-53 not showed significant different. The OP was strongly influenced by the particle size, the particles less than 53 µm (OP <53) presented the highest concentration of OP. The average concentration of OP <53, was of 140.7 mg OP gr-1 soil for entire profile, whereas to OP 2000-53 was of 37.4 mg OP gr-1 soil. These results indicate that the variations of OC and OP respond differently in environments according to place characteristics: vegetation type, soil and climate variations, uses different, etc.es_ES
dc.relation.journalTitle21st World Congress of Soil Science (WCSS)es_ES
dc.type.subtypeResumenes_ES
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