Air pollution impact on the Covid-19 mortality in Iran considering the comorbidity (obesity, diabetes, and hypertension) correlations

In the present study, the defoliation status of spruce stands is related to mycorrhizal conditions and presence of mycorrhizal macromycetes fungi in two localities at the highest sites of the Krkonoše Mts. In the long-term view, the defoliation and the diversity of mycorrhizal fungi have improved but the number of active as well as nonactive mycorrhizae has decreased while their ratio has not changed. Statistically significant is the correlation between the total number of mycorrhizae and pH. The results within last years of observations as well as in comparison to the conditions in the last decade show that mountain spruce stands growing at non-exposed sites are tolerant to a degradation of mycorrhizal conditions resulting from the long-term air pollution impact. The studied parameters of mycorrhizal symbiosis have not shown a clear trend; their results however indicate the stabilized mycorrhizal state. Positive changes can be seen in the total increase of macromycetes diversity as well as in the apparent increase of percentage of macromycetes in the studied localities, which correlates to the moderately improving defoliation.

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Integrated Evaluation of Road Transport Pollution Impact on the Urban Air

Proccedings of 10th International Conference "Environmental Engineering" ◽

10.3846/enviro.2017.048 ◽

2017 ◽

Author(s):

Vaida Šerevičienė ◽

Vaida Vasiliauskienė ◽

Dainius Paliulis ◽

Jurgita Aleknaitė

Keyword(s):

Heavy Metals ◽

Air Pollution ◽

Nitrogen Dioxide ◽

Urban Air Pollution ◽

Visual Assessment ◽

Road Transport ◽

Urban Air ◽

Diffusive Sampling ◽

Active Measurement ◽

Pollution Impact

With the number of vehicles increasing, the analysis of urban air pollution becomes expedient. This article deals with the integrated evaluation of road transport realised pollutant impact on the urban air. During research, it was carried out complex measurements of the air quality involving passive diffusive sampling for nitrogen dioxide, active measurement for particle matters, lichen sampling for heavy metals and visual assessment of trees defoliation. Obtained results showed the statistically reliable (p < 0.05) strong correlation (r = 0.83) between the number of passing vehicles and the concentration of particulate matter and there is even stronger correlation (r = 0.94; p < 0.05) between the concentration of nitrogen dioxide and the number of passing vehicles. It was observed during the analysis, that in measuring sites in which was determined 30% more intense defoliation process, also determined a higher NO2 (>10μg/m3) and lead (~10 mg/kg) concentrations. It can be argued that the source of mentioned pollutants is the same – motor transport, and their presence in the environment influences defoliation phenomenon.

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