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Abstract

Prolonged water saturation and seasonal alternational between water logging and drainage has profound effects on soil chemical and morphological properties. Changes in the degree of water saturation affect the supply of O2 to the soil, wich in turn affects the oxidation state of important elements. The oxidation state of iron, manganese and sulfur strongly influences their solubility and colour, explaining the brown, gray, blue, black and yellow mottles often seen in periodically wet, so-called hydromorphic, soils. Redox processes often involve production or consumption of H+ and so have an important effect on soil pH too.

Keywords

Clay Mineral Acid Neutralize Capacity Surface Horizon Pyrite Oxidation Gley Soil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Kluwer Academic Publishers 1998

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