caa a22 4500 467905363 CHVBK 20180406152832.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s10661-006-0360-x doi (NATIONALLICENCE)springer-10.1007/s10661-006-0360-x Interactions of Atmospheric Deposition with Coniferous Canopies in Estonia [Elektronische Daten] [K. Pajuste, J. Frey, E. Asi] Throughfall and open field bulk precipitation were measured at three coniferous sites during 1995-2002 in the framework of ICP Integrated Monitoring and at five coniferous sites during 1996-2002 in the framework of ICP Forests (Level II). The coniferous canopies acted as a sink for nitrate and ammonium and as a source for base cations: Ca2+, Mg2+ and K+. The estimated share of SO4-S dry deposition from total deposition was 1.5-4 times higher for dormant period compared to growing period. During the study period average annual throughfall and bulk deposition of SO4-S decreased significantly, 2.8 and 2.3 times, respectively. Throughfall enrichment with base cations increased in the order Mg < Na < Ca < K. Using Na as a tracer ion, average dry deposition and canopy leaching were calculated. Leaching was the dominant process for TF enrichment by potassium. Leaching of base cations occurred during growing as well as dormant period. The calculated internal flux of Ca2+ and Mg2+ varied in the range of 0.6-2.0 and 0.6-1.2 kg ha−1 per year in spruce and pine stands, respectively. The internal circulation of K+ was significantly higher (8.9-10.9 kg ha−1 per year) in spruce stands than in pine stands (2.7-4.4 kg ha−1 per year). Springer Science + Business Media, Inc., 2006 bulk deposition nationallicence canopy leaching nationallicence pine and spruce stand nationallicence throughfall deposition nationallicence Pajuste K. Institute of Geography, University of Tartu, Vanemuise, Estonia aut Frey J. Institute of Geography, University of Tartu, Vanemuise, Estonia aut Asi E. Centre of Forest Protection and Silviculture, Tartu, Estonia aut Environmental Monitoring and Assessment Kluwer Academic Publishers 112/1-3(2006-01-01), 177-196 0167-6369 112:1-3<177 2006 112 10661 https://doi.org/10.1007/s10661-006-0360-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-0360-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pajuste K. Institute of Geography, University of Tartu, Vanemuise, Estonia aut NATIONALLICENCE 700 1- Frey J. Institute of Geography, University of Tartu, Vanemuise, Estonia aut NATIONALLICENCE 700 1- Asi E. Centre of Forest Protection and Silviculture, Tartu, Estonia aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 112/1-3(2006-01-01), 177-196 0167-6369 112:1-3<177 2006 112 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer