Affiliation: | 1. Natural Resources Institute Finland (Luke), Helsinki, Finland;2. Forest Research Institute of Karelian Research Centre, Russian Academy of Sciences, Petrozavodsk, Russia;3. Natural Resources Institute Finland (Luke), Joensuu, Finland;4. University of Helsinki, Helsinki, Finland;5. Center for Forest Ecology and Productivity, Russian Academy of Sciences, Moscow, Russia;6. Natural Resources Institute Finland (Luke), Oulu, Finland |