Manganese, iron, and phosphorus in nodules of chernozem-like soils on the northern Tambov Plain and their importance for the diagnostics of gley intensity

Zaidel’man, F. R.; Nikiforova, A. S.; Степанцова, Л. В.; Safronov, S. B.; Krasin, V. N.

doi:10.1134/s1064229309050020

Cited by 16 publications

(3 citation statements)

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“…The dominance of Fe rather than Mn in Fe pedofeatures was confirmed by SEM-EDS analysis and suggests that saturation periods are often prolonged (> 2-3 days) in these soils (Veneman et al 1976;Hseu and Chen, 1999;He et al 2003;Kyuma, 2004;Zaidel'man et al, 2009). This interpretation is supported by the low chroma field colours (≤ 2) of the Gleysol and Stagnosol A horizons (Franzmeier et al 1983;Vepraskas and Wilding, 1983), whilst the higher chroma (4) of the Cambisol A horizon suggests a more freely-drained, oxidised soil environment (Table 1) (Vepraskas, 1999).…”

Section: Discussionmentioning

confidence: 70%

A microanalytical study of iron, aluminium and organic matter relationships in soils with contrasting hydrological regimes

et al. 2013

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It is recognised that interactions between mineral oxides and soil organic matter (SOM) are an important factor in the stabilisation of soil organic carbon (SOC). The nature of these interactions is particularly complex in gleyed soils that experience periodic waterlogging and changeable redox conditions. This study explores the complex patterns of iron (Fe) (hydr)oxides and SOM in three soils with contrasting hydrological regimes (Gleysol, Stagnosol and Cambisol). Micromorphological examination of undisturbed soil thin sections was teamed with SEM-EDS analysis and sequential dissolution of Fe pedofeatures to gain a better understanding of the mechanisms involved in SOM stabilisation by mineral oxides. All soils contained a diverse range of particulate SOM forms and Fe pedofeatures; the degree of impregnation of the Fe pedofeatures was found to increase with depth and a strong correlation between the presence of SOM and Fe pedofeatures was found to exist through all soils. Weakly crystalline Fe (hydr)oxides were found in association with partially degraded tissue residues and amorphous fine organic matter (OM). Strongly crystalline Fe (hydr)oxides were found in all impregnative Fe pedofeatures and high Fe/C ratios suggested precipitative processes rather than sorption dominate SOC sequestration in these features. In addition, at the core of some strongly impregnated Fe nodules, occluded well preserved organic tissues were identified. The study highlights the range of processes and complexity involved in SOC sequestration over mm to cm scales and untangling this complexity is vital to understanding and modelling terrestrial C fluxes. Whilst the methods used here are not without their complications, the value of micro-scale studies of undisturbed soil thin sections is clearly demonstrated

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Section: Discussionmentioning

confidence: 70%

A microanalytical study of iron, aluminium and organic matter relationships in soils with contrasting hydrological regimes

et al. 2013

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“…In generalThe reduction doubles the amount of favours the release of about two times the Mn with respect to the oxic environment (and up to 11 and 13 times for D2 and I1, respectively). TheAn influence of Mn on P sorption has been suggested for soils of temperate areas (Zaidel'man et al, 2009) although thisit was not confirmed for tropical soils . .…”

Section: And Discussionmentioning

confidence: 95%

“…strengite. An influence of Mn on P sorption has been postulated for soils of temperate areas (Zaidel'man et al, 2009) but this was not confirmed for tropical soils . In our soils a role of Mn in the P retention should also be taken into account.…”

Section: And Discussionmentioning

confidence: 96%

Release of phosphorus under reducing and simulated open drainage conditions from overfertilised soils

et al. 2014

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Environmental Chemistry for a Sustainable World

2012

Environmental Chemistry for a Sustainable World

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Manganese, iron, and phosphorus in nodules of chernozem-like soils on the northern Tambov Plain and their importance for the diagnostics of gley intensity

Cited by 16 publications

References 1 publication

A microanalytical study of iron, aluminium and organic matter relationships in soils with contrasting hydrological regimes

A microanalytical study of iron, aluminium and organic matter relationships in soils with contrasting hydrological regimes

Release of phosphorus under reducing and simulated open drainage conditions from overfertilised soils

Environmental Chemistry for a Sustainable World

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