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Organic and chlorine in Swedish spruce forest soil: Influence of nitrogen
Linköpings universitet, Institutionen för tema, Tema vatten i natur och samhälle. Linköpings universitet, Filosofiska fakulteten.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för tematisk utbildning och forskning, Miljövetenskap. Linköpings universitet, Filosofiska fakulteten.
Linköpings universitet, Institutionen för tematisk utbildning och forskning, Miljövetenskap. Linköpings universitet, Filosofiska fakulteten.ORCID-id: 0000-0002-6471-143X
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2001 (Engelska)Ingår i: Geoderma, ISSN 0016-7061, E-ISSN 1872-6259, Vol. 101, nr 3-4, s. 1-13Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Concentrations of organic and inorganic chlorine were estimated in samples collected in forest soils in the southern part of Sweden, and changes were observed after the addition of nitrogen in incubated samples. All of the investigated samples contained both inorganic and organic chlorine, and the concentration of organic chlorine was 2-4 times larger than that of inorganic chlorine. The results suggest that the amount of organic chlorine in mature spruce forest soils with a moderate chloride deposition in the temperate region is larger than the amount of inorganic chlorine. The results of the nitrogen incubation indicate that addition of ammonium nitrate causes a net decrease in the concentration of organic chlorine and a net increase in chloride concentration. The observed change appears to mainly be a result of a dechlorination of the organic matter present in the water leachable fraction. © 2001 Elsevier Science B.V.

Ort, förlag, år, upplaga, sidor
2001. Vol. 101, nr 3-4, s. 1-13
Nyckelord [en]
Chloride, Nitrogen, Organic chlorine, Soil organic matter
Nationell ämneskategori
Samhällsvetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-47419DOI: 10.1016/S0016-7061(00)00087-2OAI: oai:DiVA.org:liu-47419DiVA, id: diva2:268315
Tillgänglig från: 2009-10-11 Skapad: 2009-10-11 Senast uppdaterad: 2017-12-13Bibliografiskt granskad
Ingår i avhandling
1. Organic chlorine and chloride in soil
Öppna denna publikation i ny flik eller fönster >>Organic chlorine and chloride in soil
2000 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Chloride is generally believed to be conservative with respect to water and is often used as atracer of water movement in hydrological research and biogeochemical modeling. However,the last decade of research has shown that naturally fanned organically bound chlorine isubiquitous in the environment. The turnover of such compounds has previously not been putin relation to the geochemical cycle of chloride.

The aim of this thesis was to examine and compare the distribution of organically bound chlorine and chloride in soil. The influence of central soil-forming factors, such as climate, ecosystems and topography were studied and special attention was paid to spatial distribution patterns. Samples were collected in southern Sweden and in the Anhui province in China. The former is situated in the temperate region and the latter in the subtropical region.

The results show that the storage of organic chlorine in the Swedish soils was 2-4 times larger than the chloride storage. This suggest that the storage of organic chlorine in forest soils with a moderate chloride deposition in the temperate region is of such size that even small changes in this storage are likely to have a considerable impact on the transport of chloride. In contrast, the size of the storage of organic chlorine in the Chinese soils was 2 times smaller than the storage of chloride. The storage is still of such size that it cannot be excluded thatchanges in this storage influence the transport of chloride.

It was also found that the concentration of both forms of chlorine varied among different types of ecosystems such as coniferous and deciduous forest soils. In addition, both forms of chlorine appear to vary seasonally with higher concentrations in the winter and lower concentrations in the summer. The spatial distribution pattem of organic chlorine followed that for organic matter in the Chinese forest soil whereas it followed the pattern of chloride in the study of Swedish forest soils.

In conclusion, the occurrence of organically bound chlorine in soil is influenced by factors such as climate, type of ecosystem and the topography. It is suggested that net-changes in the storage of organic chlorine are of importance for the transport of chloride, which implies that the biogeochemical cycle of chlorine should be addressed.

Ort, förlag, år, upplaga, sidor
Linköping: Linköpings universitet, 2000. s. 55
Serie
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 210
Nationell ämneskategori
Tvärvetenskapliga studier inom samhällsvetenskap
Identifikatorer
urn:nbn:se:liu:diva-35039 (URN)24714 (Lokalt ID)91-7219-724-2 (ISBN)24714 (Arkivnummer)24714 (OAI)
Disputation
2000-09-15, Sal Elysion, Hus-T, Universitetsområdet Valla, Linköping, 10:15 (Svenska)
Tillgänglig från: 2009-10-10 Skapad: 2009-10-10 Senast uppdaterad: 2018-01-13Bibliografiskt granskad

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Tema vatten i natur och samhälleFilosofiska fakultetenInstitutionen för fysik, kemi och biologiTekniska högskolanMiljövetenskap
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