Nitrogen in river basins: sources, retention in the surface waters and peatlands, and fluxes to estuaries in Finland

The Science of the Total Environment
Ahti LepistöAntti Räike

Abstract

Nitrogen export from diffuse and point sources and its retention in the major river basins of Finland is quantified and discussed. The estimated total export from river-basins in Finland was 119,000 tonnes N a(-1) for the period 1993 to 1998 based on N export from different land use types defined in a GIS-based assessment model, incorporated with estimates of N inputs from atmospheric deposition and point sources. Agriculture contributes 38% of the total export, varying in the range 35-85% in the south-western basins and 0-25% in the northern basins. This estimate of N export from agriculture was based on regional N balances together with data from small agricultural research catchments. Forestry contributes on average 9%, with increasing dominance towards eastern and northern parts of the country: from 2% to 15% in the southern-mid-western Finland basins to 10-30% in the large northern basins. 'Background' N export from forests on both mineral and organic soils contributes 27% on average; in the northern basins it may contribute from 40% up to 90% of the total load. The estimate was calculated based on practically all data available from 42 small, experimental catchments in Finland. Of the total N input to Finnish river-system...Continue Reading

References

Jun 19, 2003·The Science of the Total Environment·A RäikeJ Vuorenmaa
May 16, 2006·The Science of the Total Environment·Andrew J Wade

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Citations

May 18, 2010·Environmental Monitoring and Assessment·Oscar AminJorge Marcovecchio
Oct 2, 2009·Environmental Science and Pollution Research International·Dingjiang ChenMark O Kimberley
Jan 25, 2008·Ecological Applications : a Publication of the Ecological Society of America·Jacques C FinlaySanjeev Kumar
Dec 29, 2009·The Science of the Total Environment·Zhen-yao ShenJun-feng Niu
May 16, 2006·The Science of the Total Environment·Andrew J Wade
Apr 22, 2006·The Science of the Total Environment·Colin NealHeather Wickham
Jun 18, 2014·The Science of the Total Environment·Marianna PastuszakDamian Panasiuk
Nov 28, 2012·The Science of the Total Environment·Rémi DupasPatrick Durand
Aug 31, 2016·The Science of the Total Environment·Estela RomeroLuis Lassaletta
Oct 4, 2012·Journal of Environmental Monitoring : JEM·Ji-Hee Son, Kenneth H Carlson
Nov 16, 2010·Journal of Environmental Monitoring : JEM·José Virgílio CruzPedro Freire
Aug 27, 2018·Environmental Science and Pollution Research International·Marianna PastuszakBogusław Buszewski
Jul 6, 2016·Journal of Environmental Quality·Heidi HolmroosSusanna Hietanen
Jan 4, 2021·Environmental Monitoring and Assessment·Łukasz Pietruszyński, Roman Cieśliński
Dec 30, 2020·The Science of the Total Environment·Leena FinérLiisa Ukonmaanaho
Oct 26, 2018·Environmental Science & Technology·Sari UusheimoLauri Arvola

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