The importance of the urban heat island is connected to various correlations with urban management and public health with air quality in the urban environment where a considerable percent of the human community lives in the modern industrialized areas.
This paper evaluates the degree in which the city of Bucharest-Romania influences the thermal regime in the soil.
Knowing the soil temperature parameters is necessary to design sewerage systems, water, gas and heating networks, etc. as well as choosing the sorts and species for the green areas apt to withstand the multiple stresses they are subjected to inside the urban area.
The materials obtained on the bases of the processing that have been carried-out pointed in all cases of higher temperatures in the center of the town with respect to the surrounding area.
For the study to be carried-out in 1994 concerning the soil thermal regime in the area of the Bucharest city, temperature measurements were carried-out at 5 sites within the central area characterized through a highly dense-built area.
Other 5 sites were chosen in the area with an average built density and relatively covered with vegetation, at 4 sites within the forests, parks and lakes area and also at a site outside the borders of the city.
The thermal regime in the soil in the urban and pre-urban area shown a rather stressed zoning especially in the less deep layers, as determined mostly by the active surfaces having a wide range of characteristics and structures.
The surfaces covered by compact vegetation in the north of the country record lower soil temperatures against
these in the high density built central area.