Fig. 7From: Is tree age or tree size reducing height increment in Abies alba Mill. at its southernmost distribution limit?Relative growth rates (RGR) vs. initial tree height (a) and initial tree diameter (b) across three age classes, and the power function obtained from the relationship between RGR for height and the initial tree height, a (RGR = 1.444 h-1.615), and initial tree diameter, b (RGR = 1.005 dbh-0.666) for all agesBack to article page