Holocene pedogenic indicators in the deposits of the Shanchy site (Central Tuva)

Pedogenic features in the deposits of the Shanchy site were investigated, pedogenesis zones were distinguished and their forming conditions were reconstructed. It was shown that humus horizon forming conditions about 8.5 thousand years ago were warm and moderately humid. Then it became colder and more humid which, as humus horizon at the depth 81-88 cm indicates, changed to warmer and less humid conditions again. The next pedogenesis period was characterized by gradual changing from the conditions analogous to the forest-steppe ones to the moderately dry steppe conditions. Generally, pedogenic features in warm periods when active humus accumulation occurred correspond to those of steppe conditions with a different combination of temperatures and humidity degree and in relative cool periods when the deposits dividing these warm periods were formed correspond to the pedogenic features of forest conditions with different humidity degree as well

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