Wpływ zasolenia na aktywność dehydrogenaz w odniesieniu do ekologicznego znaczenia skażenia gleby
Date
2014Author
Telesiński, Arkadiusz
Onyszko, Mirosław
Płatkowski, Maciej
Stręk, Michał
Metadata
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The aim of this study was to determine dehydrogenases activity in the soil with the
addition of NaCl in different concentrations and to identify whether the observed changes to be
considered dangerous, tolerated, or insignificant for soil ecosystem. The study was carried out
on samples of loamy sand, sandy loam and sandy clay loam. The aqueous NaCl solutions were
introduced to soil in the doses of: 0; 0.05; 0.50; 5.00; 50.00 mmol · kg–1. Dehydrogenases
activity was measured spectrophotometrically in 1, 3, 7, 14, 28, 56 and 112 day of incubation.
The results are indicated in the graphs of ecological hazard zones (Domsch et al. 1983). The
presence in soil of sodium chloride caused inhibition of dehydrogenases activity. The observed
inhibition level of these enzymes was greatest in loamy sand and decreased with organic
carbon and clay fraction ≤ 0.002 mm. Soil salinity with largest doses of NaCl (5.00 and
50.00 mmol · kg–1), in relation to ecological significance of soil contamination could turn into its
degradation.
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- Wydanie 309(29) 2014 [12]
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