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Impact of tree species on soil carbon stocks and soil acidity in southern Sweden
epartment of Landscape Planning, Swedish University of Agricultural Sciences, Alnarp, Sweden.
University of Gävle, Department of Mathematics, Natural and Computer Sciences, Ämnesavdelningen för naturvetenskap. (Biologi)
Department of Forest Soils, Swedish University of Agricultural Sciences, Uppsala, Sweden.
2006 (English)In: Scandinavian Journal of Forest Research, ISSN 0282-7581, E-ISSN 1651-1891, Vol. 21, no 5, p. 364-371Article in journal (Refereed) Published
Abstract [en]

The impact of tree species on soil carbon stocks and acidity in southern Sweden was studied in a non-replicated plantation with monocultures of 67-year-old ash (Fraxinus excelsior L.), beech ( Fagus silvatica L.), elm (Ulmus glabra Huds.), hornbeam (Carpinus betulus L.), Norway spruce ( Picea abies L.) and oak ( Quercus robur L.). The site was characterized by a cambisol on glacial till. Volume-determined soil samples were taken from the O-horizon and mineral soil layers to 20 cm. Soil organic carbon (SOC), total nitrogen (TN), pH (H2O), cation-exchange capacity and base saturation at pH 7 and exchangeable calcium, magnesium, potassium and sodium ions were analysed in the soil fraction < 2 mm. Root biomass (< 5 mm in diameter) and its proportion in the forest floor and mineral soil varied between tree species. There was a vertical gradient under all species, with the highest concentrations of SOC, TN and base cations in the O-horizon and the lowest in the 10 - 20 cm layer. The tree species differed with respect to SOC, TN and soil acidity in the O-horizon and mineral soil. For SOC and TN, the range in the O-horizon was spruce > hornbeam > oak > beech > ash > elm. The pH in the O-horizon ranged in the order elm > ash > hornbeam > beech > oak > spruce. In the mineral soil, SOC and TN ranged in the order elm > oak > ash = hornbeam > spruce > beech, i.e. partly reversed, and pH ranged in the same order as for the O-horizon. It is suggested that spruce is the best option for fertile sites in southern Sweden if the aim is a high carbon sequestration rate, whereas elm, ash and hornbeam are the best solutions if the aim is a low soil acidification rate.

Place, publisher, year, edition, pages
2006. Vol. 21, no 5, p. 364-371
Keywords [en]
ash, beech, CN ratio, elm, hornbeam, oak, roots, spruce
National Category
Forest Science
Identifiers
URN: urn:nbn:se:hig:diva-2090ISI: 000241491600003OAI: oai:DiVA.org:hig-2090DiVA, id: diva2:118752
Available from: 2008-06-21 Created: 2008-06-21 Last updated: 2018-03-13Bibliographically approved

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Majdi, Hooshang

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