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Function of peatland located on secondary transformed peat-moorsh soils on the rates of the elution of organic matter // Tomsk State Pedagogical University Bulletin. 2011. Issue 5 (107). P. 144-149

The elution of soil organic matter from 4.5 km long consisting peat-moorsh soils transect in broad range of pH was investigated. This transect is located in the Agroecological Landscape Park in Turew, 40 km South-West of PoznaD, West Polish Lowland. There is this transect along Wysko ditch. pH and pseudo first-order reaction constants were measured. Peat-moorsh soils were described and classified according to Polish hydrogenic soil classification and World Reference Base Soil Notation. There are four investigated points along to Wyskoc ditch. Two times a month during entire vegetation season the following material was taken from this four chosen site – samples of peat, from the depth of 0–20 cm. The rates of the reaction were calculated from the kinetics of first order reaction model. All experiments were repeated at different pH 6.0, 6.5, 7.0, 8.0, 8.5 of 0.5 M ammonium acetate buffer solution. The rates of organic matter elution for all samples of peats were significant different at four used wavelengths » = 272 nm, » = 320 nm, » = 465 nm, and » = 665 nm. It was observed that the rates increased between » = 272 nm and » = 320 nm and decreased from » = 465 nm to » = 665 nm.

Keywords: peat-moors soils, dissolved organic matter, kinetics of dissolved organic matter