Fig. 6
Redundant analysis of simulated AR, growth rates, root morphologies, and root physiological properties. The angles and lengths of the arrows indicate the direction and strength of the relationship of simulated AR, growth rates, root morphologies, and root physiological properties. A Redundant analysis of Q. acutissima; B redundant analysis of C. lanceolata. RDA, redundant analysis; pH, AR pH; NO3−, the concentration of NO3− in AR; HGR, height growth rate; DGR, basal diameter growth rate; TRL, total root length; TRS, total root surface area; AD, root average diameter; MDA, root malondialdehyde content; TTC, root activity; SOD, superoxide dismutase activity in root; POD, peroxidase activity in root; CAT, catalase activity in root