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Content of cold water extracted organic matter (CWEOM) in organic and mineral soils of Upperdniester alluvial plane was estimated. The largest CWEOM content (mg∙100 g-1) in the upper (10 cm) soil layers was found in peat soils – 105-135, and the smallest – 20-30– in arable sod and meadow soils. The highest CWEOM content was found in the lower horizons of peat soil, where it reaches 290 mg∙100 g-1. Strong correlation (r=0.81 -0.99; P<0.05) between CWEOM and TOC was found. It indicates the presence of dynamic equilibrium in the SOM system that supports certain level of labile pool compounds – the main source of bioavailable materials and energy.
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Partyka et al. (2017) studied this question.
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