Methane (CH4) emissions from tree stems in boreal upland and drained peatland forest

Mari Pihlatie1, Iikka Haikarainen2, Elisa Halmeenmäki3, Petteri Pyykkö3, Jussi Heinonsalo4, Anuliina Putkinen3,4, Minna Santalahti4, Hannu Fritze5, Katerina Machacova6, Mika Korkiakoski7, Kari Minkkinen8, Paavo Ojanen5, Timo Penttilä5 and Annalea Lohila7, (1)University of Helsinki, Institute for Atmospheric and Earth System Research / Physics, Faculty of Science, Helsinki, Finland, (2)University of Helsinki, University of Helsinki, Department of Agricultural Science and Institute for Atmospheric and Earth System Research / Forest Sciences, Faculty of Agriculture and Forestry, Helsinki, Finland, (3)University of Helsinki, Department of Physics, Helsinki, Finland, (4)University of Helsinki, Department of Food and Environmental Sciences, Helsinki, Finland, (5)Natural Resources Institute Finland (Finnish Forest Research Institute), Vantaa, Finland, (6)Global Change Research Institute CAS, Department of Ecosystem Trace Gas Exchange, Brno, Czech Republic, (7)Finnish Meteorological Institute, Helsinki, Finland, (8)University of Helsinki, Department of Forest Sciences, Helsinki, Finland