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Konduktivitet i vattendrag som indikator på sura sulfatjordar
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2012 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Abstract [en]

Increasing attention is being given to acid sulphate soils wherever they occur. The problems that leaching sulphate soils gives with significant lowerings of pH and mobilization of heavy metals influence large spectra of our society from fisheries to agriculture to construction. Mapping these soils is consequently of great importance and the methods of doing this is very much lacking in function and precision. This study was therefore carried out to investigate whether conductivity in running water can be used as a simple instrument to identify acid sulphate soils in the catchment. 31 coastal streams in the county of Västerbotten were analyzed for different catchment properties such as occurence of marine sediments and basic water chemistry including conductivity and sulphate. Sulphate proved to be the dominant factor controling conductivity in most streams, constituting up to 90 % of the anions. The results also showed that the concentrations of sulphate correlated to 67 % with marine sediments in the catchment. Where conductivity values exceeded 90 µS/cm the influence of acid sulphate soils could be determined for certain. The major conclusion drawn from this study is that high conductivity values serves as a reliable indicator of leaching acid sulphate soils whereas lower values can not exclude them.

Place, publisher, year, edition, pages
Keyword [en]
Acid sulphate soils, Conductivity, Water chemistry, Stream water
National Category
Physical Geography Other Earth and Related Environmental Sciences
URN: urn:nbn:se:umu:diva-61632OAI: diva2:570996
External cooperation
Länsstyrelsen Västerbotten
Subject / course
Examensarbete i Naturgeografi för kandidatexamen
Educational program
Bachelor of Science in Biology and Earthscience
Life Earth Science
Available from: 2012-11-28 Created: 2012-11-21 Last updated: 2012-11-28Bibliographically approved

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Examensrapport, Maria Myrstener(1015 kB)257 downloads
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Type fulltextMimetype application/pdf

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Department of Ecology and Environmental Sciences
Physical GeographyOther Earth and Related Environmental Sciences

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