The impact of residential development and municipal greenery on the thermal conditions of the city…

The impact of residential development and municipal greenery on the thermal conditions of the city gullies in Lublin– Ludwika Poręba, Grzegorz Siebielec, Artur Łopatka, Beata Bartosiewicz, Radosław Kaczyński, Tomasz Stuczyński

Abstract

Urbanization is a serious threat to the soil cover. It entails the process of soil sealing thereby limiting soil functions. The local climate is also affected – sealed areas absorb heat, thereforetemperature above them is increasing. It contributes to the formation of an urban heat island, which negatively affects the quality of human life. In the two surveyed gullies in Lublin, 35 measurement points were located, in which two temperature sensors were placed: one at a height of 1.5 m and the other in the soil at a depth of 0.15 m. The measurement points were located at different distances from the buildings (from 10 to 236 m in a straight line) and in the areas with different types of vegetation – trees, shrubs and grass. Research carried out in two gullies in Lublin revealed that the differences in air temperature at various locations were even 10 degrees Celsius depending on the distance from the buildings, the type of plant cover and soil characteristics. Large temperature variability could be observed even within a small area. The negative impact of buildings on the air temperature in the city is eliminated by proper distribution of green areas, reducing the temperature by up to 7 degrees Celsius. The process of soil sealing cannot be avoided. Therefore, land intended for urbanisation should be used rationally. The spatial planning process should take into account not only land for infrastructure but also for green areas to reduce negative impact of soil sealing on the quality of life of the residents.

Keywords: urbanisation, soil, soil functions, temperature, soil sealing, green areas