Fig. 3: Assessment of N stocks of the Yedoma domain, subdivided into five stratigraphic units.
From: A globally relevant stock of soil nitrogen in the Yedoma permafrost domain

a N stock boxplots with min-max ranges and areal coverage of each unit (grey vertical bars) in km²). b N density in kg N m−3. See Fig. 1 for the abbreviations of the stratigraphical classes.