Effects of bulk precipitation pH and growth period on cation enrichment in precipitation beneath the canopy of a beech ( Fagus moesiaca) forest stand

The effects of bulk precipitation pH and growth period (growing and dormant) on cation enrichment beneath foliage were examined in a beech ( Fagus moesiaca) forest stand during a 48-month period. The bulk precipitation pH values ranged from 4.2 to 7.2. The lowest values were observed in winter due t...

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Bibliographic Details
Published in:The Science of the total environment 2001-12, Vol.281 (1), p.79-85
Main Authors: Michopoulos, P., Baloutsos, G., Nakos, G., Economou, A.
Format: Article
Language:English
Subjects:
Acid Rain - adverse effects
Bulk precipitation
Cation leaching
Chemical composition and interactions. Ionic interactions and processes
Earth, ocean, space
Enrichment ratio
Exact sciences and technology
External geophysics
Fagus - chemistry
Fagus - growth & development
Fossil Fuels
Hydrogen-Ion Concentration
Magnesium - analysis
Magnesium - pharmacokinetics
Meteorology
Plant Leaves - growth & development
Potassium - analysis
Potassium - pharmacokinetics
Power Plants
Seasons
Stemflow
Throughfall
Trees
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Summary:The effects of bulk precipitation pH and growth period (growing and dormant) on cation enrichment beneath foliage were examined in a beech ( Fagus moesiaca) forest stand during a 48-month period. The bulk precipitation pH values ranged from 4.2 to 7.2. The lowest values were observed in winter due to fossil fuel combustion in a nearby big city. The ratio of monthly ion fluxes of throughfall plus stemflow over monthly ion fluxes of bulk precipitation was chosen as an index of cation enrichment and, therefore, as the dependent variable. Bulk precipitation pH and growth period were chosen as independent factors. Precipitation interception (%) by tree canopies was also taken into account. It was found that the pH factor was significant only for H + ion enrichment suggesting neutralization of H + ions in the beech canopy, whereas Mg 2+ and K + enrichment were greater in the growing period, probably as a result of leaching. Crown interception was negatively significant for NH 4 +-N enrichment.
ISSN:0048-9697
1879-1026
DOI:10.1016/S0048-9697(01)00837-3