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Release of stored sulphur from acid forest soils in Europe under decreasing sulphur deposition

Title data

Prechtel, Annette:
Release of stored sulphur from acid forest soils in Europe under decreasing sulphur deposition.
Bayreuth : Bayreuther Inst. für Terrestrische Ökosystemforschung , 2004 . - V, 102 S. - (Bayreuther Forum Ökologie ; 107 )
( Doctoral thesis, 2004, Universität Bayreuth, Fakultät für Biologie, Chemie und Geowissenschaften)

Abstract in another language

High anthropogenic sulphur deposition to forested catchments enhanced the natural soil acidification and caused acidification of freshwatersand severe ecosystem damage. Part of the atmospheric sulphur was stored in the catchments’ soils mainly as inorganic sulphate (SO4) or as organic sulphur (Sorg). High anthropogenic sulphur deposition toforested catchments enhanced the natural soil acidification and caused acidification of freshwaters and severe ecosystem damage. Part of the atmospheric sulphur was stored in the catchments’ soils mainly asinorganic sulphate (SO4) or as organic sulphur (Sorg). In regions where previously stored sulphur is released, reversal of water acidification can be delayed for decades. To answer the questionsabout the reversibility of anthropogenic acidification of waters and of ecosystem recovery, the degree and the dynamics of SO4 release from the soils’ sulphur pools have to be studied. Knowing the relevant soil sulphur pools and understanding the mechanisms of SO4 release from those pools is essential for predicting the timescales of the reversibility ofacidification. As part of the EU research project RECOVER:2010 the response of sulphur dynamics in European catchments to decreasing SO4 deposition was evaluated, soil sulphur pools in the organic and inorganic sulphur fractions of eleven European catchments were studied and the role of Sorg for sulphur release from the catchments was evaluated. The future SO4 stream concentrations in the Black Forest catchments Schluchsee and Villingen were simulated with the model MAGIC.In times of decreasing sulphur deposition excess mineralization of Sorg can contribute to the net release of sulphur from the catchments. Excess mineralization (mineralization > immobilization and plant uptake) was investigated and quantified in an in situ incubation experiment in theforest floor of a Norway Spruce stand.

Further data

Item Type: Doctoral thesis
Additional notes: BAYCEER24041
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
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: 09 Oct 2015 05:56
Last Modified: 15 Feb 2016 09:03
URI: https://eref.uni-bayreuth.de/id/eprint/20241