Scientific Journal of KubSAU

There are changes in almost all the properties of chernozems under locally overmoistening. In general, changes in the properties and conditions of chernozems under the development of local wetlands went in a particular way, regardless of the peculiarities of soil formation factors and causes waterlogging. The most noticeable change is the transformation of physical properties of soil and organic matter status. According to our research, more quickly and clearly excessive moisture causes a change in the physical properties of the soil. There are changes of the structural state, bulk density and amount of water-stable aggregates. The significant change is the transformation of soil organic matter. There is increasing of total humus content. In a group composition, the fraction of humic and fulvic acids increases the share. The humus profile is stretched. In the majority of cases in investigated soils was diagnosed secondary salinization. The periodic waterlogging of the soil also contributes to the change in the amount of soil carbonates and their distribution in the profile. Chernozems gradually lose calcium, the main structurant and humates maker. Among the most studied soil of Zernogradsky region in the cationic part of the prevailing spot goes sodium. In addition, the narrowing ratio of calcium to magnesium was observed. That is the hallmark of the aqueous extract of locally overmoistening soils