1. Department of Forest Sciences, University of Helsinki, Helsinki 00100, Finland
2. Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki,Yliopistonkatu 3, Helsinki 00100, Finland
3. Natural Resources Institute Finland (Luke), Latokartanonkaari 9, Helsinki 00790, Finland
4. Finnish Environment Institute (SYKE), Latokartanonkaari 11, Helsinki 00790, Finland
5. Department of Forest Economics, Swedish University of Agricultural Sciences (SLU), Almas Allé 8, Uppsala 75007, Sweden