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Nitrogen and Carbon...
Nitrogen and Carbon Dynamics and the Role of Enchytraeid Worms in Decomposition of L, F and H Layers of Boreal Mor
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- Laurén, Ari (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Lappalainen, Mari (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Saari, Paivi (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Kukkonen, Jussi V. K. (författare)
- Department of Biology, University of Eastern Finland, P.O. Box 111, Joensuu 80101, Finland
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- Koivusalo, Harri (författare)
- Department of Civil and Environmental Engineering, Aalto University School of Engineering, P.O. Box 15200, Aalto 00076, Finland
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- Piirainen, Sirpa (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Setälä, Heikki (författare)
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti 15140, Finland
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- Sarjala, Tytti (författare)
- Parkano Unit, Finnish Forest Research Institute, Kaironiementie 15, Parkano 39700, Finland
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- Bylund, Dan (författare)
- Mittuniversitetet,Institutionen för tillämpad naturvetenskap och design (-2013)
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- Heinonen, Jaakko (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Nieminen, Mika (författare)
- Vantaa Unit, Finnish Forest Research Institute, P.O. Box 18, Vantaa 01301, Finland
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- Palviainen, Marjo (författare)
- Department of Forest Sciences, University of Helsinki, P.O. Box 27, Helsinki 00014, Finland
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- Launiainen, Samuli (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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- Finér, Leena (författare)
- Joensuu Unit, Finnish Forest Research Institute, P.O. Box 68, Joensuu 80101, Finland
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Joensuu Unit, Finnish Forest Research Institute, PO. Box 68, Joensuu 80101, Finland Department of Biology, University of Eastern Finland, P.O. Box 111, Joensuu 80101, Finland (creator_code:org_t)
- 2012-03-28
- 2012
- Engelska.
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Ingår i: Water, Air and Soil Pollution. - : Springer Science and Business Media LLC. - 0049-6979 .- 1573-2932. ; 223:7, s. 3701-3719
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Decomposition of organic material releases carbon dioxide (CO2) into the atmosphere, and dissolved organic carbon (DOC), dissolved organic nitrogen (DON) and ammonium (NH4-N) into soil water. Each of the decomposition products contributes differently to overall export of carbon (C) and nitrogen (N) to water courses. Our aim was to study the quantity and composition of the released C and N as affected by the organic material and soil fauna, represented by enchytraeid worms. We measured the release rate of carbon dioxide, and calculated the release rates for DOC and dissolved N in soil from repeated measurements of DOC and N pools during laboratory incubation of litter (L), fermented (F) and humus (H) layers of boreal forest mor. The intermediate decomposition products, DOC and DON, were characterised according to the molecule size. The release rate of the decomposition products was higher for fresh than for old organic material. The majority of N and C were released as NH4-N and CO2, respectively. The amount of extractable organic N in soil decreased by time but DON increased. Enchytraeids stimulated N mineralisation and the release of large molecule size DOC, particularly in L layer. The results suggest that organic N in extractable form biodegrades effectively, and that soil fauna have an important role in the decomposition. The results were interpreted from the water quality point of view and the implications of the results to modelling of decomposition and export of DOC and dissolved N to recipient water bodies are discussed. In the modelling context, the novelty of the study is the description of the intermediate decomposition products and the division of the dissolved organic compounds into low molecular weight and high molecular weight fractions.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Ammonium
- Carbon dioxide
- Dissolved organic carbon
- Dissolved organic nitrogen
- Nitrate
- Soil fauna
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Laurén, Ari
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Lappalainen, Mar ...
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Saari, Paivi
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Kukkonen, Jussi ...
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Koivusalo, Harri
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Piirainen, Sirpa
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visa fler...
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Setälä, Heikki
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Sarjala, Tytti
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Bylund, Dan
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Heinonen, Jaakko
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Nieminen, Mika
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Palviainen, Marj ...
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Launiainen, Samu ...
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Finér, Leena
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