The paper presents the most important data on temperature and other
microclimate conditions (solar radiation and light regime) in the 127 year
old even-aged pure sessile oak forest in the National Park ?Fruska Gora? in
Serbia. Data collection was conducted in July 2008, using an automatic
weather station ?WS-GP1? and a luxmeter with a selenium photocell. The study
stands are located on the east and west facing sides of a ridge at an
altitude of 475m. The slope inclination is 27? and 32?. The canopy is sparse
to complete (0.6 to 0.7). The paper presents comparative research results for
the eastern and western aspect, which are further compared with the data from
the reference weather station ?Rimski Sancevi?. The intensity and trend of
microclimate changes depend on the type of forest, its structure,
geographical location, canopy closure and other features. Microclimate
research results indicate that during the research period the maximum air
temperature of the eastern aspect was 24.8?C, which was 3.6?C below the
maximum measured at the reference station. The maximum air temperature of the
western aspect amounted to 31.0?C, which was 2.8?C below the value measured
in the open. The maximum total solar radiation of the eastern aspect was
769W/m2 (at 11.08), and 634W/m2 (at 15.31) of the western. The research
determined that the east-facing stand had the light intensity of
6,766.3Lx/m2, while the light transmission coefficient amounted to 14.8%; the
west-facing stand had the light intensity of 9213.8Lx/m2 and the light
transmission coefficient of 19.3%.