K. Sh. Kazeev, M. A. Kutrovskii, E. V. Dadenko, L. S. Vezdeneeva,
S. I. Kolesnikov, and V. F. Val’kov
Southern Federal University, ul. Bol’shaya Sadovaya 105/42, Rostov-on-Don, 344006 Russia
E-mail: kazeev@sfedu.ru
Received March 21, 2008
Abstract—The biological activity of different subtypes of soddy-calcareous soils (rendzinas) of the Northwest
Caucasus region was studied. In the Novorossiisk–Abrau-Dyurso region (dry subtropics), typical soddy-calcar-
eous soils with the high content of carbonates predominate; in the more humid conditions of the Lagonaki Pla-
teau (Republic of Adygeya), leached soddy-calcareous soils carbonate-free down to the parent rock are spread.
The number of microarthropods, the populations of fungi and bacteria, and the enzyme activity (catalase, dehy-
drogenase, and invertase) testify that the biological activity of these soils significantly differs. In the typical
soddy-calcareous soils of the dry subtropics, the content of carbonates does not affect the characteristics men-
tioned; in the more humid conditions of the West Caucasus region, the presence of carbonates in the parent
rocks intensifies the biological activity of the soddy-calcareous soils.
DOI: 10.1134/S1064229312030052
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