Assessment of the influence of vegetation cover on the land surface temperature for different geotechnical systems of Mogilev city

Abstract

The joint analysis of Earth remote sensing data and geographic information system (GIS) project differentiated by type of geotechnical systems (GTS) for the territory of the city of Mogilev, explored the features of the influence of vegetation cover on the land surface temperature (LST) in various types of GTS of a large city. As part of landscaperecreational territories, the lowest average LST values were recorded in forest ecosystems of the city of Mogilev. They are followed by reserved green areas, located mainly in river valleys, then – parks and small landscape forms. In the class of built-up areas, the highest average LST values were related to industrial and communal structures. They were lower in residential multi-apartment, public and in areas of unfinished construction. Residential estate was characterized by the lowest average LST. It is shown a feedback between LST and various characteristics of vegetation cover obtained from remote sensing data. Correlation of average LST with average normalized difference vegetation index (NDVI), leaf area index (LAI), canopy chlorophyll content (CCC) and the degree of greening for all type system in the city are estimated from –0.6 to –0.7. Stronger feedbacks were noted for reserved green areas (mainly by trees and shrubs in river valleys) varying from –0.7 to –0.8. The connections are weakening in the GTS of residential multi-apartment buildings (up to –0.5 and 0.6), in the GTS of industrial and communal areas (from –0.4 to –0.6) and forests (from –0.3 to –0.6).