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dc.contributor.authorSILVA NETO, L. de F. da
dc.contributor.authorINDA, A. V.
dc.contributor.authorNASCIMENTO, P. C. do
dc.contributor.authorGIASSON, E.
dc.contributor.authorSCHMITT, C.
dc.contributor.authorCURI, N.
dc.date.accessioned2021-11-09T02:10:19Z-
dc.date.available2021-11-09T02:10:19Z-
dc.date.created2021-11-08
dc.date.issued2015
dc.identifier.citationCiência e Agrotecnologia, v. 39, n. 5, p. 423-434, set./out. 2015.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1135896-
dc.descriptionIn the Porto Alegre metropolitan region (PAMR) there are a significant proportion of floodplain soils, mainly Planosols and Gleysols, in relation to upland soils. This study aimed to evaluate the morphological, chemical and physical characteristics, and to classify floodplain soils in the PAMR. Six soil profiles were evaluated under different sedimentary lithologies and drainage classes, and samples were collected for chemical and physical analyzes. Two orders of mineral soils (Planosols and Gleysols) and one order of organic soil (Organosols) were identified. The soils were moderately deep to deep and stratified. In mineral soils hue ranged between 7.5YR and 2.5Y, with the occurrence of Bg, Btg or Cg gley horizons, while in organic soil the colors were neutral. Sand and silt were the predominant particle sizes according to the origin sedimentary deposits. The organic carbon content was negatively related to soil density and positively related to soil specific surface area and with soil cation exchange capacity. Soil chemical characterization showed expressive variation in bases, aluminum and sodium saturation. Ki index and Fe(CBD)/Fe(H2SO4) ratio indicated a low soil weathering degree. The different sedimentary lithologies and the soil hydromorphism degree were the main factors related to differences in morphological, physical and chemical characteristics of soils in the PAMR.
dc.language.isoeng
dc.rightsopenAccesseng
dc.subjectQuaternary sediments
dc.subjectSpecific surface area
dc.titleCharacterization and classification of floodplain soils in the Porto Alegre metropolitan region, RS, Brazil.
dc.typeArtigo de periódico
dc.subject.thesagroSolo Hidromórfico
dc.subject.nalthesaurusHydromorphic soils
riaa.ainfo.id1135896
riaa.ainfo.lastupdate2021-11-08
dc.identifier.doihttps://doi.org/10.1590/S1413-70542015000500001
dc.contributor.institutionLUIS DE FRANCA DA SILVA NETO, CNPS; ALBERTO VASCONCELLOS INDA, UFRGS; PAULO CÉSAR DO NASCIMENTO, UFRGS; ELVIO GIASSON, UFRGS; CATILINE SCHMITT, UFRGS; NILTON CURI, UFLA.
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