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Vattenkvaliteten i Norrström 1965–2012
2013 (Swedish)Report (Other academic)
Abstract [sv]

Övervakning av vattenkvaliteten i Norrström har pågått i nationellregi sedan 1965. Halterna av näringsämnet fosfor har minskat med75 procent sedan slutet av 1960-talet. Den stora minskningen skedde under 1960–1970-talen i samband med förbättradavloppsrening. Halterna har dock fortsatt minska även under 1980-och 1990-talen. Totalhalterna av organiskt kol har ökat stadigtsedan 1996. Halterna av tungmetallerna kadmium, zink, nickel ochkrom har minskat sedan 1996.

Place, publisher, year, edition, pages
Stockholm: Länsstyrelsen , 2013. , 11 p.
Series
Länsstyrelsen i Stockholms FAKTA-serie, 2013:15
National Category
Environmental Sciences
Research subject
Finance, Regional; Miljöövervakningens programområden, Freshwater; Environmental Objectives, Flourishing Lakes and Streams; Environmental Objectives, Zero Eutrophication; Freshwater, Vattendrag trendstationer; Environmental Objectives, Natural Acidification Only; Environmental Objectives, A Non-Toxic Environment
Identifiers
URN: urn:nbn:se:naturvardsverket:diva-2463OAI: oai:DiVA.org:naturvardsverket-2463DiVA: diva2:817745
Available from: 2015-06-05 Created: 2015-06-05 Last updated: 2015-06-12Bibliographically approved

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Environmental Sciences

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CiteExportLink to record
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  • apa
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