Abstract
A study of parkland in Abakan and Chernogorsk cities, located in the steppe zone and characterized by a high level of atmospheric pollution. Plant taxa are identified that make the greatest contribution to the purification of the urban environment. The most common tree plants in the parkland are adventitious species Populus alba L., P. balsamifera L., Acer negundo L., Sorbaria sorbifolia (L.) A. Braun, Syringa vulgaris L., Ulmus pumila L. et al. In the flora of parks and squares of Abakan, 288 species of higher vascular plants belonging to 59 families and 183 genera were identified. The flora of parkland in Chernogorsk totals 142 species belonging to 33 families and 105 genera. Leading position belongs to the largest families – Asteraceae, Poaceae, Rosaceae and Fabaceae. An analysis of satellite data made it possible to remotely determine the functional state, phenological changes, and weather sensitivity of green zone vegetation. As a result of the studies, the general and seasonal indicators of the vegetation and water index were analyzed according to the satellite data (Landsat 8) for the territories of Abakan and Chernogorsk located in the steppe zone of Khakasia. Abakan had higher values of the integral NDVI (45.1-57.9), in comparison with Chernogorsk (11.4-14.2), better water supply and earlier dates of the beginning of the growing season. Based on satellite data, the productivity of green zones was compared and the regression dependences of spectral and meteorological indicators were identified.
Highlights
Abakan and Chernogorsk cities are located in the zone of increased natural and anthropogenic potential for atmospheric pollution, which is characterized by frequent repeatability of calm and surface inversions, which prevents the dispersion of pollutants and contributes to their accumulation
The purpose of the study was to assess the current state of the flora and vegetation in the parks of cities in the steppe zone of Khakasia according to ground and satellite data
Chernogorsk city is surrounded by small-grained steppes
Summary
Abakan and Chernogorsk cities are located in the zone of increased natural and anthropogenic potential for atmospheric pollution, which is characterized by frequent repeatability of calm and surface inversions, which prevents the dispersion of pollutants and contributes to their accumulation. As ecological monitoring of vegetation in the urban environment is limited, the value of data on species diversity is increasing. It is of interest to compare the species composition of various cities with remote sensing, as this characterized the adaptation of species to environment, the diversity of ecological and biomorphological forms in specific circumstances. Urban vegetation needs constant monitoring, for that terrestrial and satellite data are successfully applied [1-3]. The purpose of the study was to assess the current state of the flora and vegetation in the parks of cities in the steppe zone of Khakasia according to ground and satellite data
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