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Temperature regime of some soil types in Georgia


The thermal regime of the different soil types of Georgia has been studied on the basis of soil temperature records obtained at 60 weather stations in 1947–1995. It is shown that the thermal conductivity and temperature gradients in the soil profiles depend on the soil type. In the upper 0–20 cm of the soils in the intermontane depressions, the lowest temperature gradients in the summer are typical of the red ferrallitic soils (0.5–1.1°C/dm), and the highest gradients are observed in the chernozems of eastern Georgia (1.0–1.3°c/dm). The soil temperature gradients are especially high in the late spring (1.4–1.8°c/dm), when the atmospheric convection is formed. In the mountains, the lowest gradients in the summer are observed in the cinnamonic soils (0.4–0.9°c/dm), and the highest gradients are established in the brown forest soils (0.5–1.3°c/dm). The redistribution of the temperatures in the deeper layers depends on the soil texture. The lowest temperature gradient is in the soils of Telavi (3.1°c/m), where a stony layer is found at the depth of 60 cm, which causes the good heating of the deep layers. The highest gradients are seen in the clayey and loamy soils of western (Chakva, 3.8°c/m) and eastern (Tbilisi, 3.9°c/m) Georgia. This is probably related to the high water content in the heavy-textured soils.

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Correspondence to E. Sh. Elizbarashvili.

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Original Russian Text © E.Sh. Elizbarashvili, T.F. Urushadze, M.E. Elizbarashvili, Sh.E. Elizbarashvili, M.K. Schaefer, 2010, published in Pochvovedenie, 2010, No. 4, pp. 461–470.

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Elizbarashvili, E.S., Urushadze, T.F., Elizbarashvili, M.E. et al. Temperature regime of some soil types in Georgia. Eurasian Soil Sc. 43, 427–435 (2010).

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  • Soil Temperature
  • EURASIAN Soil Science
  • Brown Forest Soil
  • Surface Soil Temperature
  • Cinnamonic Soil