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A comparison of humic fractions of Chernozemic and Luvisolic soils by elemental analyses, UV and ESR spectroscopy

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dc.contributor.authorPaul, E. A., author
dc.contributor.authorAnderson, D. W., author
dc.contributor.authorRussell, D. B., author
dc.contributor.authorSt. Arnaud, R. J., author
dc.contributor.authorAgricultural Institute of Canada, publisher
dc.coverage.spatialSaskatchewan, District of
dc.date.accessioned2007-01-03T06:06:39Z
dc.date.available2007-01-03T06:06:39Z
dc.date.issued1974-11
dc.description.abstractThe Ah horizons of a Brown–Dark Brown–Black–Dark Gray–Gray Luvisolic sequence of Canadian grassland and forest soils were studied. Clay-associated humus was present in greater proportions in the grassland than in forest soils, particularly in the grassland soils of the more arid regions. Amounts of alkali-pyrophosphate-extractable humus increased in the Brown to Gray Luvisolic sequence. Alkali-pyrophosphate-extractable humic acid (HA-A) contents were greatest in the Black and Dark Gray soils. C:H ratios, extinction coefficients at 280 nm (E280), and resistance to acid hydrolysis of the HA-A and clay-associated HA-B increased in the Brown to Gray Luvisolic sequence. Free radical concentrations were least for the Brown and Dark Brown soils, moderate for the Black and greatest for the Gray Luvisolic soils. The data suggest an increase in the proportion of aromatic components in the humic acids in going from the Brown to the Gray Luvisolic soils. An objective, multivariate similarity analysis based on 22 humus characteristics showed a relationship between soil zone or soil environment and the nature of the soil's humus.
dc.format.mediumborn digital
dc.format.mediumarticles
dc.identifier.bibliographicCitationAnderson, D. W., D. B. Russell, R. J. St. Arnaud, and E. A. Paul, A Comparison of Humic Fractions of Chernozemic and Luvisolic Soils by Elemental Analyses, UV and ESR Spectroscopy. Canadian Journal of Soil Science 54, no. 4 (November 1974): 447-456. https://dx.doi.org/10.4141/cjss74-058.
dc.identifier.doihttps://dx.doi.org/10.4141/cjss74-058
dc.identifier.urihttp://hdl.handle.net/10217/80857
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofFaculty Publications
dc.rights©1974 Agricultural Institute of Canada.
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjecthumus
dc.subjectsoil environment
dc.subjectheterogeneity
dc.subjectenvironmental gradient
dc.titleA comparison of humic fractions of Chernozemic and Luvisolic soils by elemental analyses, UV and ESR spectroscopy
dc.typeText

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A comparison of humic fractions of Chernozemic and Luvisolic soils by elemental analyses, UV and ESR spectroscopy
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