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A regional perspective on present and future soil chemistry at 16 Swedish forest sites

Fransson, Liisa LU ; Alveteg, Mattias LU ; Kronnas, V; Sverdrup, Harald LU ; Westling, O and Warfvinge, Per LU (2005) In Water, Air and Soil Pollution 162(1-4). p.89-105
Abstract
Assessing the timescales of recovery, by the use of dynamic models, will be used as input to the policy process to abate acidification. In this study the multilayer dynamic soil chemistry model SAFE was applied to 16 forest sites in Sweden, covering a sulfur deposition gradient of 1.2-11 kg S/ha/yr. Soil samples were collected at all sites and the pH and sulfate concentration dependent isotherm, used for modeling sulfate adsorption in SAFE, was parameterized for every site. A new way of implementing the nutrient uptake distribution in SAFE was developed, which allows the uptake distribution between layers in the rooting zone to vary with time, depending on the availability of base cations in the individual layers. Model output was compared... (More)
Assessing the timescales of recovery, by the use of dynamic models, will be used as input to the policy process to abate acidification. In this study the multilayer dynamic soil chemistry model SAFE was applied to 16 forest sites in Sweden, covering a sulfur deposition gradient of 1.2-11 kg S/ha/yr. Soil samples were collected at all sites and the pH and sulfate concentration dependent isotherm, used for modeling sulfate adsorption in SAFE, was parameterized for every site. A new way of implementing the nutrient uptake distribution in SAFE was developed, which allows the uptake distribution between layers in the rooting zone to vary with time, depending on the availability of base cations in the individual layers. Model output was compared to measurements of base cation concentration, total inorganic Al, pH and Bc/Al both site-by-site and cumulatively for all sites, and the usefulness of these comparisons is discussed from a policy viewpoint. Future projections of recovery show that the overall recovery, expressed as minimum Bc/Al ratio > 1 in the rooting zone, is slow. Assuming full implementation of the UNECE LRTAP Gothenburg Protocol and no further emission reductions thereafter, 44% of the modeled sites still have a Bc/Al ratio below 1 in 2100 in some soil layer within the rooting zone. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water, Air and Soil Pollution
volume
162
issue
1-4
pages
89 - 105
publisher
Springer
external identifiers
  • wos:000229510200007
  • scopus:21344439542
ISSN
1573-2932
DOI
10.1007/s11270-005-5995-7
language
English
LU publication?
yes
id
4ebd432d-8d2a-4c9f-8813-13c7076f0c3a (old id 151684)
date added to LUP
2007-06-25 12:54:44
date last changed
2017-01-01 04:20:24
@article{4ebd432d-8d2a-4c9f-8813-13c7076f0c3a,
  abstract     = {Assessing the timescales of recovery, by the use of dynamic models, will be used as input to the policy process to abate acidification. In this study the multilayer dynamic soil chemistry model SAFE was applied to 16 forest sites in Sweden, covering a sulfur deposition gradient of 1.2-11 kg S/ha/yr. Soil samples were collected at all sites and the pH and sulfate concentration dependent isotherm, used for modeling sulfate adsorption in SAFE, was parameterized for every site. A new way of implementing the nutrient uptake distribution in SAFE was developed, which allows the uptake distribution between layers in the rooting zone to vary with time, depending on the availability of base cations in the individual layers. Model output was compared to measurements of base cation concentration, total inorganic Al, pH and Bc/Al both site-by-site and cumulatively for all sites, and the usefulness of these comparisons is discussed from a policy viewpoint. Future projections of recovery show that the overall recovery, expressed as minimum Bc/Al ratio > 1 in the rooting zone, is slow. Assuming full implementation of the UNECE LRTAP Gothenburg Protocol and no further emission reductions thereafter, 44% of the modeled sites still have a Bc/Al ratio below 1 in 2100 in some soil layer within the rooting zone.},
  author       = {Fransson, Liisa and Alveteg, Mattias and Kronnas, V and Sverdrup, Harald and Westling, O and Warfvinge, Per},
  issn         = {1573-2932},
  language     = {eng},
  number       = {1-4},
  pages        = {89--105},
  publisher    = {Springer},
  series       = {Water, Air and Soil Pollution},
  title        = {A regional perspective on present and future soil chemistry at 16 Swedish forest sites},
  url          = {http://dx.doi.org/10.1007/s11270-005-5995-7},
  volume       = {162},
  year         = {2005},
}