Ecologia Balkanica

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https://doi.uni-plovdiv.bg/handle/store/4
p-ISSN: 1314-0213 / e-ISSN: 1313-9940

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Browsing Ecologia Balkanica by Author "Daribayeva, Sevara"

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    Study of soils in mountain ecosystems in Yundola, Bulgaria
    (Plovdiv University Press "Paisii Hilendarski", 2024-05-09) Bogdanov, Simeon; Baubekova, Gauhar; Daribayeva, Sevara; Tauakelov, Chingis; Grigorova-Pesheva, Bilyana
    The productivity of forest plantations depends directly on the soil's ability to meet the specific requirements of each tree species. Soil fertility is a determining factor in the existence, development, and normal functioning of forest ecosystems. Natural coniferous forests in mountain ecosystems are a particularly important part of Bulgaria's forest resources. They are of great economic importance, but also have protective functions. The purpose of this study is to examine the characteristics of the main soil types in natural mountain ecosystems in Yundola, Bulgaria. The object of this study is the most widely distributed soils in Bulgaria's natural mountain ecosystems. These are Dystric-Eutric Cambisols, Umbric Cambisols and Modic Cambisols, which belong to the class of metamorphic soils (Cambisols). Statistical analysis of the results revealed statistically significant differences in soil organic matter content, C:N ratio, and pH among the three studies soil types, which were consistent with changes in altitude.
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    The relationship of atmospheric pollutants and meteorological variables for the Sofia region, Bulgaria
    (Plovdiv University Press "Paisii Hilendarski", 2024-05-25) Baubekova, Gaukhar; Tauakelov, Chingis; Daribayeva, Sevara; Gosteva, Lyudmila
    The research on the relationship between meteorological conditions and atmospheric air pollution in Sofia city was conducted based on 1-hour data on meteorological variables (air temperature, global solar radiation, wind speed) and atmospheric pollutants (NO2, CO, O3, SO2, PM10) for 2012-2016. As a result of the correlation and regression analysis of the influence of meteorological variables on the daily concentrations of atmospheric pollutants, the strongest effect is expressed in ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2) and particulate matter (PM10). In urban areas, air temperature (AT), the intensity of global solar radiation (GSR) and, wind speed (WS) have a stronger impact on the concentration of pollutants. There is a strong correlation between air temperature (r = 0.53 ÷ 0.76) and solar radiation (r = 0.65 ÷ 0.77) with ozone concentrations. An exception is the area of Orlov most, where there is an average correlation with temperature and a minor correlation with solar radiation. In regions (except Kopitoto) there are average correlations between air temperature and PM10, SO2, and CO (r = 0.55 ÷ 0.62). There is a weak correlation between NO2 and air temperature and solar radiation in the areas of Druzhba and Nadezhda.