Articles | Volume 7, issue 2
https://doi.org/10.5194/soil-7-363-2021
https://doi.org/10.5194/soil-7-363-2021
Original research article
 | 
06 Jul 2021
Original research article |  | 06 Jul 2021

Aluminous clay and pedogenic Fe oxides modulate aggregation and related carbon contents in soils of the humid tropics

Maximilian Kirsten, Robert Mikutta, Didas N. Kimaro, Karl-Heinz Feger, and Karsten Kalbitz

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Cited articles

Anda, M., Shamshuddin, J., Fauziah, C. I., and Omar, S. S.: Mineralogy and factors controlling charge development of three Oxisols developed from different parent materials, Geoderma, 143, 153–167, 2008. 
Asano, M. and Wagai, R.: Evidence of aggregate hierarchy at micro- to submicron scales in an allophanic Andisol, Geoderma, 216, 62–74, 2014. 
Barré, P., Fernandez-Ugalde, O., Virto, I., Velde, B., and Chenu, C.: Impact of phyllosilicate mineralogy on organic carbon stabilization in soils. Incomplete knowledge and exciting prospects, Geoderma, 235–236, 382–395, https://doi.org/10.1016/j.geoderma.2014.07.029, 2014. 
Barthès, B. G., Kouakoua, E., Larré-Larrouy, M.-C., Razafimbelo, T. M., de Luca, Edgar F., Azontonde, A., Neves, C. S. V. J., de Freitas, Pedro L., and Feller, C. L.: Texture and sesquioxide effects on water-stable aggregates and organic matter in some tropical soils, Geoderma, 143, 14–25, 2008. 
Bartoli, F., Burtin, G., and Herbillon, A. J.: Disaggregation and clay dispersion of Oxisols: Na resin, a recommended methodology, Geoderma, 49, 301–317, 1991. 
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Mineralogical combinations of aluminous clay and pedogenic Fe oxides revealed significant effects on soil structure and related organic carbon (OC) storage. The mineralogical combination resulting in the largest aggregate stability does not better preserve OC during conversion of forests into croplands. Structural changes in the direction of smaller mean weight diameters do not cancel out the stabilizing effect of soil minerals.
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