Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Gheorghe JIGĂU, Boris TURCHIN, Sergiu DOBROJAN, Tatiana CIOLACU, Galina DOBROJAN
The evolution of chernozems within the current phase of anthropo-natural pedogenesis is influenced by the agro-climatogenic neohydromorphism whose development is determined by the modification of the atmospheric precipitation regime caused by climate change and the physical degradation of soils induced by agrogenesis. The latter manifests itself in the reduction of water permeability, the hydraulic conductivity of soils and the overwetting of their upper and middle segments during periods of heavy rainfall. As a result, within the space with an advanced degree of physical degradation, the automorphic-non-percolative hydric regime is replaced by the stagnant-non-percolative hydric regime (ephemeral, periodic, permanent) and the derno-chernosiomic pedogenesis is replaced by the hydrometamorphic one. Within it, the evolution of soils is determined by the processes induced by overwetting: gleyzation, montmorillonitization, metastructuring.
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