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Age-dependent climate sensitivity of Pinus sylvestris L. in the central Scandinavian Mountains

Journal article
Authors Hans W. Linderholm
Karin Linderholm
Published in Boreal Environmental Research
Volume 9
Issue 4
Pages 307-317
ISSN 1239-6095
Publication year 2004
Published at Department of Earth Sciences
Pages 307-317
Language en
Links www.borenv.net/BER/pdfs/ber9/ber9-3...
Subject categories Earth and Related Environmental Sciences

Abstract

Twentieth century climate–radial growth relationships of Pinus sylvestris L. at the central Scandinavian Mountain tree line were analyzed. Some differences in growth responses to climate were evident among age classes, where the old pines (> 250 years old) retained their climate sensitivity throughout the analysed period better than the middle-aged pines (100–250 years old). However, the pines in the oldest age class responded less to unfavourable climate than the pines in younger age classes. The pines in all the age classes displayed significant changes in climate/radial growth relationships from the 1940s and onwards. From the 1970s, pines in the youngest age class (about 35 years old) displayed a higher climate sensitivity than the older pines, in addition to which they had high growth rates not previously seen in the past five centuries. Changes in climate/radial growth relationships were related to a twentieth-century climate change. Finally our results illustrated the importance of including trees of all ages when building a tree-ring chronology for climate research

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