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Relationship between wood anatomy, tree-ring widths and wood density of Pinus sylvestris L. and climate at high latitudes in northern Sweden
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2014 (English)In: Dendrochronologia, ISSN 1125-7865, E-ISSN 1612-0051, Vol. 32, no 4, 295-302 p.Article in journal (Refereed) Published
Abstract [en]

In this study, wood anatomy, tree-ring width and wood density of Pinus sylvestris at the northern timberline in Fennoscandia were used to identify relationships among the parameters and to screen them for their climatic signals. Furthermore we investigated the influence of the juvenile wood section for all parameters developed. The measurements of wood anatomy were conducted with confocal laser scanning microscopy (CLSM) while the density profiles were produced using an Itrax MultiScanner. We developed chronologies of ring width, wood density and anatomy for a period between 1940 and 2010. Correlations between wood density and wood anatomy were strong in the latewood part. For some wood anatomy and density chronologies youth trends were found in the juvenile part. Wood density decreased from the pith up to the 9th ring and stabilized afterwards, while cell lumen diameter and lumen area increased simultaneously up to the 15th ring. All chronologies contained strong summer temperature signals. The wood anatomical variables provided additional information about seasonal precipitation which could not be found in wood density and tree-ring widths. Our study confirmed previous results stating that the parameter maximum density contains the strongest climate signal, that is, summer temperatures at the northern timberline. Nevertheless, the intra-annual data on tracheid dimensions showed good potential to supply seasonal climatic information and improve our understanding of climatic effects on tree growth and wood formation.

Place, publisher, year, edition, pages
2014. Vol. 32, no 4, 295-302 p.
Keyword [en]
Wood density, ltrax, Wood anatomy, CLMS, Sweden
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-113723DOI: 10.1016/j.dendro.2014.07.003ISI: 000347661000001OAI: oai:DiVA.org:su-113723DiVA: diva2:796406
Note

AuthorCount:4;

Available from: 2015-03-19 Created: 2015-02-09 Last updated: 2017-12-04Bibliographically approved

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