Figure 1: Principal component analysis (PCA) of seven parameters (Vcmax, Jmax, Rdlight, Gmeso, Γ*, Γ, and Anet) of the FvCB model based on the automated analysis scheme available at leafweb.ornl.gov. Abbreviations of plant species are defined in Table 1 and the abbreviations of parameters are defined in Table 2. The horizontal and vertical axes stand for the first and second axes of PCA, respectively, which account for 70 percent of the variance of the seven original parameters.