[Accumulation of common sulfur in assimilation organs foliceous plants in Minsk conditions]
2000
Sidorovich, E.A. | Chubanov, K.D. | Arabey, N.M. | Kozyr, O.S. | Zhdanets, S.F. (Central Botanical Garden NASB, Minsk (Belarus))
Monthly dynamics of common sulfur accumulation in assimilation organs of four most distributed in urban linear plantations of coniferous and foliaceous plants (Colorado spruce, small-leaved lime, Norway maple and chestnut) at 6 key stationary sites in Minsk has been investigated. Similar types of plants in the Priluky park (outside the city) were used as control ones. The content of sulfur in needles and leaves has been analyzed in samples from 10 plants at each key site by spectrometric method. Analysis results have shown that. Colorado spruce contains in its needles in the majority of cases considerably less of sulfur in comparison with foliaceous species. Seasonal variations of sulfur content in needles of Colorado spruce were mainly of random character, but there was a tendency to increase of this index from August to December in areas with increased air contamination (railway station area, Surganova street). Foliaceous plants in urban conditions were found to have evident sulfur accumulation decrease in June. In July - September sulfur content variations in each analyzed species were ambiguous. Reliability of difference with control ones and between adjacent months was observed not in all cases. Variations in sulfur accumulations are due to nonuniform distribution of gaseous release, washing out of sulfur from assimilation organs in warm seasons
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