WUE across spatial scales | VPD | Light intensity (PAR or Transmitted solar radiation) | Soil water content at 20Â cm | Soil water content at 40Â cm |
---|---|---|---|---|
Leaf-level | ||||
 Leaf-level WUE | − 0.25*** | 0.33*** | − 0.25 | − 0.37** |
 Leaf-level WUEi | 0.45*** | 0.11 | − 0.47*** | − 0.55*** |
Tree-level | ||||
 Tree-level WUE | − 0.54** | − 0.37 | 0.07 | − 0.03 |
Stand-level | ||||
 Stand-level WUE | − 0.79*** | − 0.61** | − 0.005 | − 0.14 |
 Stand-level WUEi | − 0.20 | − 0.85*** | − 0.40 | − 0.64* |