(2021-06-09) Xu, Shan; Atherton, Jon; Riikonen, Anu; Zhang, Chao; Oivukkamäki, Jaakko; MacArthur, Alasdair; Honkavaara, Eija; Hakala, Teemu; Koivumäki, Niko; Liu, Zhigang; Porcar-Castell, Albert; State Key Laboratory of Remote Sensing Science, Beijing Normal University - Xu, Shan; INAR/Forest Sciences, University of Helsinki - Atherton, Jon; INAR/Forest Sciences, University of Helsinki - Zhang, Chao; INAR/Forest Sciences, University of Helsinki - Oivukkamäki, Jaakko; Finnish Geospatial Research Institute,National Land Survey of Finland - Honkavaara, Eija; Finnish Geospatial Research Institute, National Land Survey of Finland - Hakala, Teemu; Finnish Geospatial Research Institute,National Land Survey of Finland - Koivumäki, Niko; State Key Laboratory of Remote Sensing Science, Beijing Normal University - Liu, Zhigang; INAR/Forest Sciences, University of - Porcar-Castell, Albert