Iron forms and peroxidase activity in forest island soils

Abstract

Oxidation-reduction reactions play a key role in ecologically important biogeochemical processes in soil and influence soil chemical, biochemical, and biological properties. The objective of this study was to compare the effect of a forest island located on two kinds of soils on the concentrations of iron forms and peroxidase activity participating in oxidation-reduction processes. The investigations were carried out in the Agroecological Landscape Park in Turew (40 km south of Poznan, Western Polish Lowland, 16°45'E, 52°0rN). The subject of the study was a palace park, which can be considered as a forest island. Part of this forest island is located on mineral soil and another part on mineral-organic soil. Our results showed that the flow of groundwater was accompanied by an increase in peroxidase activity, total iron concentration, and Fe(II) and Fe(in) ions in the mineral soils in most periods of sampling. However, an increase of peroxidase activity and a decrease of total iron concentration and Fe(II) and Fe(III) ions accompanying the flow of groundwater were observed in the mineral-organic soils.

1H and 13C NMR spectroscopic studies of hexane-extractable lipids from soils under shelterbelts of different age and composition of plants

“…They can be regarded as biogeochemical barriers decreasing the concentration of many chemical compounds migrating with ground water outflow from adjoining cultivated fields (Peterjohn and Correll, 1984;Szajdak and Matuszewska, 2000;Ryszkowski et al, 2002;Szajdak and _ Zyczyń ska-Bałoniak, 2002;Szajdak, 2011;Szajdak and _ Zyczyń ska-Bałoniak, 2013;Szajdak and Meysner, 2013). Shelterbelts impact the global carbon cycle because of their capacity to mitigate the green-house effect by sequestration of carbon and nitrogen (Szajdak, 2002;Szajdak and Ryszkowski, 2002;Szajdak, 2011).…”