%0 Research article
%T Will climate change affect the optimal choice of Pinus sylvestris provenances?
%A Persson, Bengt
%D 1998
%J Silva Fennica
%V 32
%N 2
%R doi:10.14214/sf.690
%U https://silvafennica.fi/article/690
%X Provenance experiments with Pinus sylvestris (L.) were evaluated in  Sweden north of latitude 60°N. Survival and yield were determined as  functions of temperature sum of the site and latitudinal origin of the  provenance. Altitudinal origin was of negligible importance. The effects  of latitudinal transfer were influenced by temperature sum at the  growing site. At the harshest situated sites southward transfer longer  than 3° was optimal for survival and yield, whereas transfer effects in a  mild climate were weak. Climatic warming would reduce demands of  hardiness. However, moderate differences in productivity are expected  between formerly optimal seed sources and the ones adapted to changed  climatic conditions. Since mortality usually was low in plantations  older than 20 years or higher than 2 m, established stands are expected  to be robust against adverse effects of climate change.