engleski

Microclimate of urban forest ecosystems of the city of Zagreb

Urban forest ecosystems have their own specific climate or microclimate in relation to other parts of cities. The aim of the research was to determine and analyse the microclimate of urban forest ecosystems in the city of Zagreb. Microclimatic conditions were measured at five different locations in the urban forests of the city of Zagreb. The locations where the measurements were performed were the park of the Faculty of Forestry, University of Zagreb, Forest Park Maksimir, meadow in Forest Park Maksimir, second Maksimir Lake, and avenue of wild chestnuts (Aesculus hippocastanum L.) in Maksimirska Street. At 7 h, 14 h and 21 h for ten consecutive days in July, air temperature (° C), relative air humidity (%), wind speed (m / s), soil temperature (° C) and soil volumetric water content were measured. The comfort index is calculated based on the values of air temperature, relative air humidity and wind speed. During the ten days of July, the mean values of air temperature (24.0 ° C), soil temperature (24.9 ° C) and wind speed (1.0 m/s) were the highest in the tree line in Maksimirska Street. The mean value of relative air humidity was highest in the Forest Park Maksimir, and the soil volumetric water content along the lake in the Park Forest Maksimir. In contrast, mean air and soil temperature values were lowest in the Forest Park Maksimir. The mean values of relative air humidity were the lowest in the tree line in Maksimirska Street, and the soil volumetric water content in the Forest Park Maksimir. According to the comfort index for the human body, the park, forest park and lake were "comfortable", while the meadows and tree-lined avenues in Maksimirska Street were "fresh" for the human body. Wind speeds were higher in more open locations such as park, meadow and tree-lined avenue in Maksimirska Street, while they were smaller in locations with a complete set of canopies, such as in the Forest Park Maksimir and by the lake. The significance of these measurements is in determining the contribution of forest vegetation to the modification of the microclimate of urban ecosystems, which contributes to a more pleasant stay and recreation of residents in these locations.

city of Zagreb, microclimate, urban forest ecosystems

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