Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.3390/f9060364
Ключевые слова: boreal forest, Pinus sylvestris L, carbon isotopes, wood anatomy, seasonal growth, climatic factors
Аннотация: Intra-annual tree-ring parameters are increasingly used in dendroecology thanks to their high temporal resolution. To better understand the nature of intra-ring proxy signals, we compared old and young trees according to the different ways in which they respond to climate. The study was carried out in central Siberia (Russia, 60 degrees 75 N, 89 degrees 38 E) in two even-aged Pinus sylvestris L. stands of different ages (20 and 220 years). Ring width, cell size, and intra-annual C-13 were measured for 4 to 27 tree rings, depending on age group (young vs. old) and tree-ring parameter. Wood formation was monitored to link tree-ring position to its time of formation. Results indicated more distinct intra-annual C-13 patterns at both the beginning and end of the ring of young trees compared to old ones. Older trees showed a stronger significant correlation between C-13 across the ring border, indicating a stronger carry-over effect of the previous year's growing conditions on current year wood production. This suggests that tree age/size influences the magnitude of the transfer of mobile carbon reserves across the years.
Выпуск журнала: Vol. 9, Is. 6
ISSN журнала: 19994907
Место издания: BASEL
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