ИСТИНА

The isotopic curves for the soils of the Tambov region met for the first time. Distribution curves for the isotopes δ13C/12C investigated soils profiles show that the cultural layers and buried soils formed under different climatic periods. Eneolit corresponds to the values of modern by a wet properties of climat δ13C (-26, -27 ‰). Apparently this time indicates the formation of chernozem-meadow soils in Tambov lowland landscapes of drying in the Atlantic during the middle Holocene. The beginning of sub-Atlantic period and the Bronze Age has a more dry and temperate climate (δ13C--26,5 ‰). The Iron Age is characterized by a more arid period of climatic history of the region (-25,1 ‰). The most severe values of the isotopic ratio observed in the Middle Ages (-24 ‰). Consequently, the medieval era of climatic by δ13C values is far from modern. It is interesting to note that the boundaries of climatic periods, are due to an increase in the degree of hydration of climate, that is, the rise of groundwater levels in Cna landscapes and flooding of rivers. They are also corresponded to the changing cultural eras in the history of settlement in the region