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Allocation is the distribution of assimilates produced by photosynthesis over the different plant components. In the ForGEM model, empirical equations are in ForGEM used for allocation Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("<p>There was a problem during the HTTP request: 502 Bad Gateway </p>") from server "":): {f_{y}

based on tree allometry. The fraction of net primary production allocated to the different plant components is set such that the tree strives for partitioning ratios between plant organs. A fixed fraction of NPP is allocated to the roots.

The coefficients of these equations are indicated as , with a numeric identifier. See allocation parameters for the values of for different tree species.


W: weight (kg tree-1)
fl: foliage
br: branches
st: stem (= heartwood + sapwood)
sh: shoot (= foliage + branches + stem)


Collet, Lanter, & Pardos, 2001.

Gansert & Sprick, 1998.

Garcia-Plazaola & Becerril, 2000.

Grubb et al., 1996.

Hättenschwiler, 2001.

Hees 1997;Lof, 2000.

Lof & Welander, 2000.

Minotta & Pinzauti, 1996.

Welander & Ottosson, 1997.

Welander & Ottosson, 1998.