We invite you to listen to Dr. Krzysztof Ufnalski’s lecture entitled “Contribution of late wood in pines from Scandinavia.”
In 2012, Prof. Jacek Oleksyn organized an expedition to Scandinavia, continuing the research of Swedish scientist Nils Sylvén conducted 100 years ago. The characteristics of pine trees growing from the 56th to 68th degree of north latitude were analysed. Based on data collected from 53 plots, we analysed the characteristics of trees, taking into account age, width of annual growth, and the proportion of early and late wood. The study showed that the proportion of late wood in annual growth decreases in the northern direction, which may be due to the shorter growing season and lack of time for the maturation of late wood cells. The length of the growing season explains 48% of this variation. Average annual temperatures in the study areas explain 44% of the variation in the proportion of late wood.
