Abstract
The purpose of the monitoring programme is to quantify sulphur and nitrogen deposition to forests, and to illustrate possible acidification of the soil. Deposition is investigated as precipitation studies in open field areas and as throughfall. Soil water chemistry from the forest stands is used as indicator of soil conditions. Air concentrations of ozone and ammonia have been measured at four locations. This report concerns the hydrological year from October 1993 through September 1994 at more than 70 locations in these ten counties in southern Sweden. Average pH-values in precipitation were 4.4-4.5. Sulphur deposition in throughfall varied from 5 kg per hectare in a sheltered stand on the island Torsoe in lake Vaenern to 34 kg per hectare in an exposed stand in Scania. At all locations sulphur deposition exceeded the target load, 3 kg per hectare and year. Nitrogen contribution from precipitation varied between 4 and 15 kg per hectare. Depending on dry deposition and biosorption of nitrogen, throughfall of nitrogen varied more than in open field areas; between 3 and 44 kg per hectare. Biosorption of nitrogen in the tree canopies prohibits the use of throughfall as measure of total nitrogen deposition. The combination of open field and
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Citation Formats
Hallgren Larsson, E, Sjoeberg, K, and Westling, O.
Air pollutants in southern Sweden. Deposition, concentrations and effects. October 1993 - September 1994; Luftfoeroreningar i soedra Sverige. Nedfall, halter och effekter oktober 1993 - september 1994.
Sweden: N. p.,
1995.
Web.
Hallgren Larsson, E, Sjoeberg, K, & Westling, O.
Air pollutants in southern Sweden. Deposition, concentrations and effects. October 1993 - September 1994; Luftfoeroreningar i soedra Sverige. Nedfall, halter och effekter oktober 1993 - september 1994.
Sweden.
Hallgren Larsson, E, Sjoeberg, K, and Westling, O.
1995.
"Air pollutants in southern Sweden. Deposition, concentrations and effects. October 1993 - September 1994; Luftfoeroreningar i soedra Sverige. Nedfall, halter och effekter oktober 1993 - september 1994."
Sweden.
@misc{etde_94579,
title = {Air pollutants in southern Sweden. Deposition, concentrations and effects. October 1993 - September 1994; Luftfoeroreningar i soedra Sverige. Nedfall, halter och effekter oktober 1993 - september 1994}
author = {Hallgren Larsson, E, Sjoeberg, K, and Westling, O}
abstractNote = {The purpose of the monitoring programme is to quantify sulphur and nitrogen deposition to forests, and to illustrate possible acidification of the soil. Deposition is investigated as precipitation studies in open field areas and as throughfall. Soil water chemistry from the forest stands is used as indicator of soil conditions. Air concentrations of ozone and ammonia have been measured at four locations. This report concerns the hydrological year from October 1993 through September 1994 at more than 70 locations in these ten counties in southern Sweden. Average pH-values in precipitation were 4.4-4.5. Sulphur deposition in throughfall varied from 5 kg per hectare in a sheltered stand on the island Torsoe in lake Vaenern to 34 kg per hectare in an exposed stand in Scania. At all locations sulphur deposition exceeded the target load, 3 kg per hectare and year. Nitrogen contribution from precipitation varied between 4 and 15 kg per hectare. Depending on dry deposition and biosorption of nitrogen, throughfall of nitrogen varied more than in open field areas; between 3 and 44 kg per hectare. Biosorption of nitrogen in the tree canopies prohibits the use of throughfall as measure of total nitrogen deposition. The combination of open field and throughfall measurements gives information of nitrogen turnover in the forest stand. These measurements indicate large exceedances of target load for nitrogen, 5 kg per hectare and year at the majority of locations in southern Sweden. Calculated strong acid inputs to the forest plots indicate twice the total load of hydrogen ions than measured throughfall deposition. Internal circulations of calcium, magnesium, potassium and manganese were extensive, which probably is normal. The decreasing trend, which has been observed during previous years concerning sulphur deposition, has been broken. 14 refs, 41 figs, 8 tabs}
place = {Sweden}
year = {1995}
month = {Jun}
}
title = {Air pollutants in southern Sweden. Deposition, concentrations and effects. October 1993 - September 1994; Luftfoeroreningar i soedra Sverige. Nedfall, halter och effekter oktober 1993 - september 1994}
author = {Hallgren Larsson, E, Sjoeberg, K, and Westling, O}
abstractNote = {The purpose of the monitoring programme is to quantify sulphur and nitrogen deposition to forests, and to illustrate possible acidification of the soil. Deposition is investigated as precipitation studies in open field areas and as throughfall. Soil water chemistry from the forest stands is used as indicator of soil conditions. Air concentrations of ozone and ammonia have been measured at four locations. This report concerns the hydrological year from October 1993 through September 1994 at more than 70 locations in these ten counties in southern Sweden. Average pH-values in precipitation were 4.4-4.5. Sulphur deposition in throughfall varied from 5 kg per hectare in a sheltered stand on the island Torsoe in lake Vaenern to 34 kg per hectare in an exposed stand in Scania. At all locations sulphur deposition exceeded the target load, 3 kg per hectare and year. Nitrogen contribution from precipitation varied between 4 and 15 kg per hectare. Depending on dry deposition and biosorption of nitrogen, throughfall of nitrogen varied more than in open field areas; between 3 and 44 kg per hectare. Biosorption of nitrogen in the tree canopies prohibits the use of throughfall as measure of total nitrogen deposition. The combination of open field and throughfall measurements gives information of nitrogen turnover in the forest stand. These measurements indicate large exceedances of target load for nitrogen, 5 kg per hectare and year at the majority of locations in southern Sweden. Calculated strong acid inputs to the forest plots indicate twice the total load of hydrogen ions than measured throughfall deposition. Internal circulations of calcium, magnesium, potassium and manganese were extensive, which probably is normal. The decreasing trend, which has been observed during previous years concerning sulphur deposition, has been broken. 14 refs, 41 figs, 8 tabs}
place = {Sweden}
year = {1995}
month = {Jun}
}