IVL Swedish Environmental Research Institute

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Swedish National Nitrogen Budget – Hydrosphere
IVL Svenska Miljöinstitutet.
IVL Svenska Miljöinstitutet.
IVL Svenska Miljöinstitutet.
2020 (engelsk)Rapport (Annet vitenskapelig)
Abstract [en]

Excessive amounts of reactive nitrogen (Nr) in the hydrosphere can impair water quality and alter the functioning of aquatic ecosystems. Monitoring of water bodies and awareness of the existing flows of nitrogen from different sectors in society can support policy making. In this report we quantified the major flows of Nr in the Hydrosphere pool of the Swedish National Nitrogen Budget, according to the methodology provided by the Task Force on Reactive Nitrogen. Calculations were done for one full year using data mainly from 2014 but also from 2015.

In 2014/2015, the largest inflows of Nr to the Swedish hydrosphere were leaching from agriculture (53 kilotonnes, kt), from forests (48 kt), atmospheric deposition (33 kt), leaching from wetlands and other land (20 kt) and municipal wastewater treatment plants (17 kt). In addition, there were minor contributions from industrial wastewaters, small dwellings and from stormwater runoff. The major outflows were transport from the coastal waters to the open sea and marine denitrification (together 127 kt) and denitrification from freshwaters (34 kt) N. In addition, there were quantitatively less important Nr losses through fishing, N2O emissions and water abstraction.

Data come from Svenska MiljöEmissionsData, Statistics Sweden, Nationellt vattentäktsarkiv and SMHI.

Abstract [sv]

Denna rapport beskriver flödet av reaktivt kväve i hydrosfären i Sverige under 2014/2015 enligt metodik som tagits fram inom ramen för Task Force for Reactive Nitrogen. De största inflödena till hydrosfären var läckage från jordbruksmark, skogsmark och våtmark och annan mark samt utsläpp från avloppsreningsverk. De största utflödena utgjordes av transport av kustvatten till omgivande hav och denitrifikation i kustzonen och i sötvatten. Denna rapport finns endast på engelska.

sted, utgiver, år, opplag, sider
IVL Svenska Miljöinstitutet, 2020.
Serie
C-rapport ; C548
Emneord [sv]
Nitrogen budget, hyrosphere, reactive nitrogen
Identifikatorer
URN: urn:nbn:se:ivl:diva-39Lokal ID: 505224ISBN: 978-91-7883-212-5 OAI: oai:DiVA.org:ivl-39DiVA, id: diva2:1549458
Tilgjengelig fra: 2021-05-05 Laget: 2021-05-05bibliografisk kontrollert

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