The growth trends of forests in 12 European countries were investigated in the beginning of 1990s. The enclosed book "Growth trends in European Forests", edited by Spiecker, Mielikäinen and Skovsgaard, reports all the results of these studies. A summary figure is available on the last page.
The following article below, authored by Mielikäinen and Timonen, describes a simple and powerful RCS-method for revealing trends in Finnish forest growth. It is based on removing all possible non-climatic trends from ring widths and then sorting the residual distribution by calendar years. The form of residual variation distribution, so called residual variation "belt", indicate trendlike changes in forest growth.
But did we find any trends in our mid-1990s study? Check from the enclosed reports!
We shall carry out a new growth trend study in Finland in 2007-2009. The results of this investigation will be introduced in the International Conference of Dendrochronology in 2010 in Rovaniemi, Finland.
We also plan to apply the same approach to many European forests if getting funded by EU or some other financier.
Those who are interested in technical aspects of the Finnish growth trend study, just check the following article:
Mielikäinen, K., Timonen, M. 1996. Growth Trends of Scots pine (Pinus sylvestris, L.) in Unmanaged and Regularly Managed Stands in Southern and Central Finland. In: Spiecker,H., Köhl, M., Mielikäinen, K. & Skovsgaard, J.P. (toim.). Growth Trends in European Forests. European Forest Institute Research Report No. 5, European Forest Institute. Pages 41-59. Pdf.