Abstract
Acid deposition damages lakes, forest soils and vegetation: Reduction in the emissions of S and N are required. Protocols within the framework of United Nations Economic Commission for Europe are being negotiated to reduce the emission of sulphur and nitrogen based on the concept of critical load. Acidification of lakes and damage to fish is well correlated with critical loads for water. The link between defoliation and critical loads for forest soils, however is more difficult to establish. The dynamic model MAGIC is used to calculate the critical loads for forest soils for present-day acid deposition and future scenarios of deposition and nitrogen retention. MAGIC includes time-dependent aspects such as cation exchange and anion adsorption, and also forest growth. The calculations are based on soil survey data of NIJOS, the atmospheric data of NILU, the forest productivity data of NIJOS, and the surface water chemistry data of NIVA. The criterion used was that the Ca/Al-molar ratio in soil solution should not fall beneath 1.0 in the uppermost 50 cm of soil for at least 50 years into the future. 2 refs.
Frogner, T;
[1]
Wright, R F;
[2]
Nellemann, C;
[3]
Esser, J M;
[4]
Cosby, B J
[5]
- Norwegian Forest Research Inst. (Norway)
- Norwegian Inst. for Water Research (Norway)
- Dept. of Biology and Nature Conservation, Norwegian Agricultural Univ. (Norway)
- Norwegian Inst. for Land Inventory (Norway)
- Dept. of Environmental Sciences, Univ. of Virginia (United States)
Citation Formats
Frogner, T, Wright, R F, Nellemann, C, Esser, J M, and Cosby, B J.
Critical loads for forest soils: acid deposition, nitrogen saturation and forest vitality.
Norway: N. p.,
1994.
Web.
Frogner, T, Wright, R F, Nellemann, C, Esser, J M, & Cosby, B J.
Critical loads for forest soils: acid deposition, nitrogen saturation and forest vitality.
Norway.
Frogner, T, Wright, R F, Nellemann, C, Esser, J M, and Cosby, B J.
1994.
"Critical loads for forest soils: acid deposition, nitrogen saturation and forest vitality."
Norway.
@misc{etde_69385,
title = {Critical loads for forest soils: acid deposition, nitrogen saturation and forest vitality}
author = {Frogner, T, Wright, R F, Nellemann, C, Esser, J M, and Cosby, B J}
abstractNote = {Acid deposition damages lakes, forest soils and vegetation: Reduction in the emissions of S and N are required. Protocols within the framework of United Nations Economic Commission for Europe are being negotiated to reduce the emission of sulphur and nitrogen based on the concept of critical load. Acidification of lakes and damage to fish is well correlated with critical loads for water. The link between defoliation and critical loads for forest soils, however is more difficult to establish. The dynamic model MAGIC is used to calculate the critical loads for forest soils for present-day acid deposition and future scenarios of deposition and nitrogen retention. MAGIC includes time-dependent aspects such as cation exchange and anion adsorption, and also forest growth. The calculations are based on soil survey data of NIJOS, the atmospheric data of NILU, the forest productivity data of NIJOS, and the surface water chemistry data of NIVA. The criterion used was that the Ca/Al-molar ratio in soil solution should not fall beneath 1.0 in the uppermost 50 cm of soil for at least 50 years into the future. 2 refs.}
place = {Norway}
year = {1994}
month = {Mar}
}
title = {Critical loads for forest soils: acid deposition, nitrogen saturation and forest vitality}
author = {Frogner, T, Wright, R F, Nellemann, C, Esser, J M, and Cosby, B J}
abstractNote = {Acid deposition damages lakes, forest soils and vegetation: Reduction in the emissions of S and N are required. Protocols within the framework of United Nations Economic Commission for Europe are being negotiated to reduce the emission of sulphur and nitrogen based on the concept of critical load. Acidification of lakes and damage to fish is well correlated with critical loads for water. The link between defoliation and critical loads for forest soils, however is more difficult to establish. The dynamic model MAGIC is used to calculate the critical loads for forest soils for present-day acid deposition and future scenarios of deposition and nitrogen retention. MAGIC includes time-dependent aspects such as cation exchange and anion adsorption, and also forest growth. The calculations are based on soil survey data of NIJOS, the atmospheric data of NILU, the forest productivity data of NIJOS, and the surface water chemistry data of NIVA. The criterion used was that the Ca/Al-molar ratio in soil solution should not fall beneath 1.0 in the uppermost 50 cm of soil for at least 50 years into the future. 2 refs.}
place = {Norway}
year = {1994}
month = {Mar}
}