For C. microphylla, SF and interception were positively correlated with canopy area. For S. gordejevii, SF increased with branch number and decreased with stem basal area; however, its interception was significantly positively correlated with stem basal area. There was no significant correlation between rainfall partitioning and any canopy characteristics for H. fruticosum (Table 3).
Correlation coefficients between rainfall partitioning and canopy characteristics of three shrub species
| . | Correlation coefficient . | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| . | C. microphylla . | H. fruticosum . | S. gordejevii . | ||||||
| Variables . | TF . | SF . | Interception . | TF . | SF . | Interception . | TF . | SF . | Interception . |
| Canopy area (m2) | −0.331 | 0.707* | 0.696* | −0.271 | 0.451 | 0.079 | −0.168 | 0.591 | 0.523 |
| Number of branches | −0.639 | 0.283 | 0.065 | −0.196 | 0.035 | 0.187 | −0.067 | 0.857** | 0.635 |
| Stem basal diameter (cm) | −0.203 | −0.457 | 0.446 | 0.31 | −0.073 | −0.25 | 0.574 | −0.121 | −0.481 |
| Branch angle (°) | 0.071 | −0.472 | −0.398 | −0.199 | 0.399 | 0.034 | −0.097 | −0.019 | 0.055 |
| Stem basal area (cm2) | −0.417 | −0.46 | 0.543 | 0.201 | −0.026 | −0.169 | 0.179 | −0.844** | 0.704* |
| Shrub height (m) | −0.256 | −0.381 | 0.41 | −0.141 | −0.045 | 0.141 | 0.209 | −0.177 | −0.023 |
| Canopy volume (m3) | −0.235 | 0.546 | 0.529 | 0.166 | −0.392 | −0.007 | 0.201 | 0.479 | −0.468 |
| . | Correlation coefficient . | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| . | C. microphylla . | H. fruticosum . | S. gordejevii . | ||||||
| Variables . | TF . | SF . | Interception . | TF . | SF . | Interception . | TF . | SF . | Interception . |
| Canopy area (m2) | −0.331 | 0.707* | 0.696* | −0.271 | 0.451 | 0.079 | −0.168 | 0.591 | 0.523 |
| Number of branches | −0.639 | 0.283 | 0.065 | −0.196 | 0.035 | 0.187 | −0.067 | 0.857** | 0.635 |
| Stem basal diameter (cm) | −0.203 | −0.457 | 0.446 | 0.31 | −0.073 | −0.25 | 0.574 | −0.121 | −0.481 |
| Branch angle (°) | 0.071 | −0.472 | −0.398 | −0.199 | 0.399 | 0.034 | −0.097 | −0.019 | 0.055 |
| Stem basal area (cm2) | −0.417 | −0.46 | 0.543 | 0.201 | −0.026 | −0.169 | 0.179 | −0.844** | 0.704* |
| Shrub height (m) | −0.256 | −0.381 | 0.41 | −0.141 | −0.045 | 0.141 | 0.209 | −0.177 | −0.023 |
| Canopy volume (m3) | −0.235 | 0.546 | 0.529 | 0.166 | −0.392 | −0.007 | 0.201 | 0.479 | −0.468 |
Note: *P < 0.05; **P < 0.01.