Fig. 1
From: Future nitrogen availability and its effect on carbon sequestration in Northern Eurasia
Land cover characteristics of Northern Eurasia. a Pie chart of the relative areas of land cover in the study area during the year 2000. b Percent cover of all young (stand age <120-years-old) and old (stand age at least 120-years-old) forests during the year 2000. c Percent cover of young and old forests underlain by permafrost during the year 2000. The spatial distributions of other land cover types represented in the pie chart are given in Supplementary Fig. 2a
