Figure 2

Bar charts (mean ± SE) of nitrogen content per area (A) nitrogen content per dry mass (B) carbon content per dry mass (C) and leaf dry to fresh mass ratio (D) for Taxus chinensis var. mairei and Taxus yunnanensis along a natural light gradient. Solid black bars represent low light, gray bars represent middle light, and white bars represent high light. Different letters (a,b) indicate significant differences.