Figure 4

Differences in leaf traits of Sophora japonica, Robinia pseudoacacia, and Senna surattensis. (A) Specific leaf area (n = 27–35); (B) Chlorophyll concentration (n = 27–35); (C) Leaf nitrogen (N) concentration (n = 27–35); (D) Leaf phosphorus (P) concentration (n = 27–35); (E) Leaf nitrogen to phosphorus (N:P) ratio (n = 27–35). Different letters for each species denote significant differences (p ≤ 0.05).