Abstract
Temporal trends in sulfate, base cation (Ca2+ + Mg2+ + K+), and H+ ion concentrations in bulk precipitation and throughfall samples collected over a seven year period (1989-95) in four forested catchments in Finland are presented. The catchments are in remote locations and span the boreal zone (61-69 °N). The stands represent old, undisturbed forests, and are composed of varying proportions of Scots pine, Norway spruce and deciduous species (mainly Betula spp.). Monthly SO4 2- and H+ ion concentrations in bulk precipitation averaged over the study period and catchments were: 18.7 µmol L-1 and 32.3 µmol L-1. The corresponding values for throughfall were: 37.4 µmol L-1 and 32.4 µmol L-1. Sulfate and H+ ion concentrations in bulk precipitation and throughfall both showed negative linear trends, which were significant (p < 0.05) for the three southernmost catchments. Concentrations and trend slope decreased northwards (e.g., bulk precipitation SO4 2- slope estimates: -1.6 to -1.0 µmol L-1 yr-1). The decline was greater for throughfall than for bulk precipitation, indicating a proportionally greater reduction in dry deposition than wet. The sum of base cation concentrations averaged 12.1 µmol(+) L-1 in bulk precipitation and 83.1 µmol(+) L-1 in throughfall. There were no significant trends in the sum of base cations (p > 0.05). It is concluded that the reported reduction in S emissions over the study period has resulted in a significant reduction in the acidity and SO4 2- concentration of bulk precipitation, and this reduction has has been reflected in throughfall concentrations. The greatest reduction has taken place in the southern part of the country.
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Ahti, T., Hämet-Ahti, L. and Jalas, J.: 1968, Ann. Bot. Fenn. 5, 378.
Anttila, P.: 1990. ‘Characteristics of Alkaline Emissions, Atmospheric Aerosols and Deposition’, in P. Kauppi, P. Anttila, and K. Kenttämies (eds.), Acidification in Finland, Springer, Berlin, pp. 111–134.
Bergström, I., Mäkelä, K. and Starr, M. (eds.): 1995, Integrated Monitoring Programme in Finland, First National Report I, Ministry of the Environment, Environmental Policy Department, Helsinki.
Bernes, C.: 1993, The Nordic Environment-Present State. Trends and Threats. Prepared by the Nordic Council of Minister's Nordic Environment Report Group, Nord 1993:12, pp. 212.
Bredemeier, M.: 1988, Water, Air, Soil Pollut. 40, 121.
Chambers, J.M., Cleveland, W.S, Kleiner, B. and Tukey, P.: 1983, Graphical Methods for Data Analysis, Wadsworth International Group, Belmont, California.
Cronan, C.S. and Reiners, W.A.: 1983, Oecologia 59, 216.
EDC.: 1993, Manual for Integrated Monitoring, Programme Phase 1993–1996, UN-ECE Convention on Long-Range Transboundary Air Pollution, International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems, Environmental Data Centre, National Board of Waters and the Environment, Environmental Report 5, pp. 114.
Edmonds, R.L., Thomas, T.B. and Rhodes, J.J.: 1991. Soil Sci. Soc. Am. J. 55, 1685.
Forsius, M., Kleemola, S., Starr, M. and Ruoho-Airola, T.: 1995, Water, Air, Soil Pollut. 79, 19.
Gilbert, R.O.:1987 Statistical Methods for Environmental Pollution Monitoring, Van Nostrand Reinhold, New York.
Helmisaari, H-S. and Mälkönen, E.: 1989, Scand. J. For. Res. 4, 13.
Hirsch, R.M., Slack, J.R. and Smith, R.A.: 1982, Water Resourc. Res. 18, 107.
Hultberg, H. and Grennfelt, P.: 1992, Environ. Pollut. 75, 215.
Hyvärinen, A.: 1990, ‘Deposition on Forest soils-Effect of Tree Canopy on Throughfall,’ in P. Kauppi, P. Anttila, and K. Kenttämies (eds.), Acidification in Finland, Springer, Berlin, pp. 199–213.
Ivens, W., Lövblad, G. and Kauppi, P. (eds.): 1990, Throughfall Monitoring as a Means of Monitoring Deposition to Forest Ecosystems-Evaluation of European Data, Nord 1990 120, Miljørapport 1990:16.
Johnson, D.W. and Lindberg, S.E. (eds.): 1992, Atmospheric Deposition and Forest Nutrient Cycling, Ecological Studies 91, Springer, New York.
Kallio, K. and Kauppi, L.: 1990 ‘Ion Budgets of Small Forested Basins,’ in P. Kauppi, P. Anttila and K. Kenttämies (eds.), Acidification in Finland, Springer, Berlin, pp. 811–823.
Lindberg, S.E., Lovett, G.M., Richter, D.D. and Johnson, D.W.: 1986, Science 231, 141.
Lindberg, S.E., Lovett, G.M.: 1992, Atmos. Environ. 26A, 1477.
Lövblad, G., Hovmand, M., Reissel, A., Westling, O., Aamlid, D., Hyvärinen, A. and Schaug, J.: 1994, Throughfall Monitoring in the Nordic Countries, Institute för vatten och luftvårdsforskning, Swedish Environmental Research Institute, IVL Publ. B 1132.
Mahendrappa, M.K.: 1983, Can. J. For. Res., 13, 948.
Novo, A., Buffoni, A. and Tita, M.: 1992, Environ. Pollut. 75, 199.
Parker, G.G.: 1983, Adv. Ecol. Res. 13, 58.
Starr, M. and Ukonmaanaho, L.: 1994, ‘Stand Precipitation and Soil Water Quality at Integrated Monitoring Catchments’, in E. Mälkönen and H. Sivula, (eds.), State of Forest Health, Research Programme Interim Report, The Finnish Forest Research Institute, Research Papers 527, 271–284. (In Finnish).
Starr, M. and Ukonmaanaho, L.: 1995, ‘Throughfall Chemistry’, in I. Bergström, K. Mäkelä and M. Starr (eds.), Integrated Monitoring Programme in Finland, First National Report 1, Ministry of the Environment, Environmental Policy Department, Helsinki.
Tuovinen, J-P., Kangas, L. and Nordlund, G.: 1990, ‘Model Calculations of Sulphur and Nitrogen Deposition in Finland’, in P. Kauppi, P. Anttila and K. Kenttämies (eds.), Acidification in Finland, Springer, Berlin, pp. 167–197.
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Ukonmaanaho, L., Starr, M. & Ruoho-Airola, T. Trends in Sulfate, Base Cations and H+ Concentrations in Bulk Precipitation and Throughfall at Integrated Monitoring Sites in Finland 1989-1995. Water, Air, & Soil Pollution 105, 353–363 (1998). https://doi.org/10.1023/A:1005087627364
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DOI: https://doi.org/10.1023/A:1005087627364