The heat flow and quantity, which are the basic thermo-physical parameters, impact pedogonic processes of different soil types, energy potential changes accumulated in soil and formation of energy balance, along with other factors. This study aims to determine thermal conductivity and quantity of heat depending upon temperature values wihin profiles of newly formed (entisol) and currently developing (inceptisol) soils on aluvial depisits under semihumid ecological conditions. It has been determined that thermal conductivity and amount of heat within inceptisol soil depending upon its genetic horizon development are higher than that in entisol soils. The heat flow and heat amount in horizons of Vertic Haplustept and Typic Haplustept soils, which belong to inceptisol soil type, varied within 13.221-50.035 watt m^-2, 2.285∙10⁶-8.646∙10⁶ J m^-2 and 7.757-29.284 watt m^-2, 1.340∙106-5.060∙10⁶ J m^-2 intervals, respectively. Also, the heat flow in entisol soils (Typic Ustifluvent, Mollic Ustifluvent-1, Mollic Ustifluvent-2) varied between 8.958 watt m^-2 and 34.300 watt m^-2 interval, while amount of heat values within those soils varied between 1.548∙106 J m-2 and 5.927∙106 J m^-2 interval. Also, heat flow and heat amount in both soils types reduced as the soil depth increased. The above mentioned variances was thought to be occurred due to differences between quantity of clay, organic matter in horizons of those soils and particle density, which have significant impact on thermal conductivity and heat amount. Besides, mutual interferences between variances in temperature difference in certain time period, dimensional heat preservation capacity, thermal diffusion and thermal conductivity significantly affect heat flow and heat amount.