Trees are a great bank of data, named
sometimes as the "silent witnesses" of the past. Due to annual formation of rings, which is normally influenced directly by of climate parameters (generally changes in temperature and moisture or precipitation) and other environmental factors.
Using dendrochronological methods for
obtaining samples of Pinus Nigra from the Catalonian PrePirineous region with total time spine of about
100 - 250 years were analyzed for the tree ring width
(TRW) patterns and had quite high correlation between them (0.71 - 0.84), corresponding to a common behaviour for the environmental changes in their annual growth.
Analyzing the cross-correlations between obtained tree ring width indexes and climate data, significant correlations (p<0.05) were observed in some lags.
These results confirm the hypothesis of using dendrochronological data as a climate signal for further analysis, such as reconstruction of climate in the past or prediction in the future for the same locality.