Wood formation in urban Norway maple trees studied by the micro-coring method |
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Authors: | Lena Marion, Jo ica Gri
ar,Primo Oven |
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Affiliation: | aBiotechnical Faculty, Department of Wood Science and Technology, University of Ljubljana, Rožna dolina, cesta VIII/34, 1000 Ljubljana, Slovenia;bTisa d.o.o., Ižanska cesta 213, 1000 Ljubljana, Slovenia |
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Abstract: | Intra-annual wood formation in healthy and affected Norway maple (Acer platanoides L.) street trees in the City of Ljubljana, Slovenia, was studied by the micro-coring method. Samples were taken with a Trephor instrument at weekly intervals during the 2005 growing season. The beginning of wood formation corresponded to the initiation of cambial activity in the middle of April in all investigated Norway maple trees. In healthy trees, the period of wood formation was finished in mid-September, persisting 7 weeks longer than in affected ones. Small destructivity and sufficient quality of micro-cores confirmed that sampling with a Trephor is a convenient method for the study of wood formation in diffuse-porous hardwoods, growing in the harsh conditions of an urban environment. |
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Keywords: | Norway maple (Acer platanoides) Xylem Cambial activity Cell differentiation Urban tree Micro-core |
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