DOI - Mendel University Press

DOI identifiers

DOI: 10.11118/978-80-7509-963-1-0244

QUANTIFYING THE COOLING FUNCTION OF URBAN VEGETATION BASED ON IMAGE DATA ANALYSIS

Tereza Pohanková1, Vilém Pechanec1
1 Palacký University, Faculty of Science, Dept. of Geoinformatics, 17. listopadu,50, 771 46 Olomouc, Czech Republic

Important regulatory ecosystem functions of vegetation include cooling functions. CICES (ver. 5.1) classifies this function as Regulation of temperature and humidity, including ventilation and transpiration cices (code 2.2.6.2). In urban environments, this is one of the most important biocultural functions of the landscape, which has been highly valued by humans in recent times. However, for the expected benefit, it is not enough to know only its area but also the spatial distribution and the degree of undulations of a given function throughout the year. This paper presents an analysis of this function in Olomouc and its immediate surroundings. The results for the relative and absolute quantification of a) surface temperature change and b) Cooling Capacity Index are presented. Land surface temperature is the emitted thermal radiation from the ground surface or from the surface of tree canopies in vegetated areas. The urban cooling model (included in InVEST model) calculates a heat mitigation index based on shade, evapotranspiration and albedo, as well as distance from cooling islands. The results are related to the amount, type and distribution of vegetation as well as the population in each urban area.

Keywords: cooling function, satellite images, urban vegetation, Olomouc, spatio-temporal analysis

pages: 244-248, Published: 2024, online: 2024



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