Fig. 1

Fractions of allocation to the leaf (a), wood (b), and root (c) of the plant as functions of light (L), and the minimum values of the availability of water and nitrogen (Min(Water, Nitrogen)) for tree plant functional types (PFTs), with values of l₀ = 0.4, s₀ = 0.3, and r₀ = 0.3. Fractions of allocation for the leaves (d) and roots (e) in grass and crop PFTs, with values of l₀ = 0.7 and r₀ = 0.3