Fig. 1.
The main plant growth extents as defined in the Root Systems of Individual Plants (RSIP). The plant size measures, or the absolute extents, illustrate the maximum aboveground (in green – shoot width and shoot height) and belowground (in brown – rooting depth, lateral spread, and root system spread) extents in meters. The inset gray box shows the four plant shape ratios used to understand the dimensions or aspect ratio of the shoot (Y : X shoot) and the root system (Y : X root), and the above/belowground vertical (S : Ry ) and horizontal (S : Rx ) allometry. The tree outline was adapted from figure 115 of Wurzelatlas mitteleuropäischer Waldbäume und Sträuche (Kutschera & Lichtenegger, 2002).