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Soil solution response to experimentally reduced acid deposition in a forest ecosystem

Title data

Alewell, Christine ; Bredemeier, Michael ; Matzner, Egbert ; Blanck, K.:
Soil solution response to experimentally reduced acid deposition in a forest ecosystem.
In: Journal of Environmental Quality. Vol. 26 (1997) Issue 3 . - pp. 658-665.
ISSN 0047-2425

Abstract in another language

In order to measure and to predict reversibility of soil solution acidification under experimentally reduced acid input, a manipulation study with artificial ´preindustrial´ throughfall was established. A roof was installed underneath the canopy in a Norway Spruce stand (Picea abies [L.] Karst.) of the German Solling area. Water falling onto the roof was adjusted to clean rain concentrations before redistribution. Soil solutions were collected with suction cup lysimeters at various depths and were analysed for major ions. The response of soil solution chemistry in the upper soil (10 cm depth) to a reduction of N, SO4 and H input was rapid. While NO3 concentration in deeper soil layers reached input levels after two years of treatment, SO4 concentration in the seepage water at 1 m depth remained high relative to the reduced input due to a release of formerly stored S from the soil. Aluminum concentrations followed a similar pattern as the SO4 concentrations. The ion concentrations in soil leachate were predicted reasonably well using the MAGIC model (Cosby et al., 1985) with the measured SO4 sorption isotherms and the throughfall fluxes as model input. Although the parameters of the Langmuir isotherm had no significant influence on the prediction of SO4 concentration in the upper soil layer, they were crucial for the prediction of SO4 dynamics in deeper soil layers. The model predicted that the reversibility of soil acidification at the Solling area is delayed for decades due to the release of soil SO4.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER6780
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Soil Ecology - Univ.-Prof. Dr. Egbert Matzner
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 13 Aug 2015 06:12
Last Modified: 13 Aug 2015 06:12
URI: https://eref.uni-bayreuth.de/id/eprint/18077