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| Titel |
Effects of clear-cutting of forest on the chemistry of a shallow groundwater aquifer in southern Norway |
| VerfasserIn |
A. Henriksen, L. A. Kirkhusmo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 4, no. 2 ; Nr. 4, no. 2, S.323-331 |
| Datensatznummer |
250001637
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| Publikation (Nr.) |
 copernicus.org/hess-4-323-2000.pdf |
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| Zusammenfassung |
| As part of the national monitoring programme for long-range transported air
pollutants, four groundwater aquifers in southern Norway were monitored for acidification
trends during the period 1980 – 1995. For the monitoring station, Langvasslia in south
eastern Norway, sampling continued until the end of 1999. This groundwater aquifer is
about 3 km north east of the calibrated catchment Lake Langtjern. The catchment of the
groundwater aquifer, covered completely by Norway spruce, was clear-cut in September 1986
and was treated with glyphosate in the summer, 1991. The chemical effects on the chemistry
of the groundwater are generally similar to those observed in stream-water from clear-cut
areas: increases in water runoff, water temperature, concentrations of K, NO3,
and organic carbon (TOC), and decrease in SO4 concentration. In the groundwater
aquifer, inorganic Al and ANC increased more than would have been expected without
clear-cutting. By 1999 NO3 concentrations were nearly the same as prior to
clear-cutting, whereas K still was elevated.
Keywords: Groundwater; clear-cutting; water chemistry; monitoring. |
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