The associations between the 10 most common genera and annual air pollutant removal indicated by Kruskal-Wallis test and their gross carbon sequestration and carbon storage per tree.
| Genus | Air pollutants removal (g/tree/yr) | Gross carbon sequestration (kg/tree/yr) | Carbon storage (kg/tree) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CO | O3 | NO2 | SO2 | PM2.5 | PM10 | Total | |||
| Albizia | 30.4 | 115.5 | 236.6 | 22.7 | 4.1 | 309.9 | 719.3 | 47.3 | 2,591.3 |
| Bombax | 48.8 | 236.5 | 347.7 | 74.2 | 3.9 | 337.6 | 1,048.6 | 47.0 | 3,299.8 |
| Cinnamomum | 47.1 | 244.5 | 347.4 | 69.7 | 4.3 | 354.0 | 1,067.0 | 39.8 | 3,505.5 |
| Dimocarpus | 43.6 | 277.8 | 284.2 | 97.5 | 3.4 | 311.9 | 1,018.3 | 35.2 | 1,325.3 |
| Ficus | 45.0 | 355.2 | 320.3 | 124.2 | 3.5 | 318.5 | 1,166.8 | 26.3 | 5,093.6 |
| Litsea | 32.4 | 139.3 | 246.1 | 33.1 | 2.5 | 195.3 | 648.7 | 41.5 | 2,252.0 |
| Plumeria | 16.1 | 64.6 | 119.6 | 15.1 | 1.2 | 97.3 | 313.9 | 23.4 | 1,202.1 |
| Podocarpus | 88.6 | 336.8 | 689.8 | 66.2 | 2.9 | 217.4 | 1,401.8 | 9.8 | 418.2 |
| Pterospermum | 78.7 | 299.5 | 613.3 | 58.9 | 6.4 | 479.8 | 1,536.6 | 32.7 | 3,805.9 |
| Syzygium | 36.5 | 168.6 | 253.0 | 49.0 | 2.8 | 240.1 | 749.9 | 40.2 | 2,636.6 |
| χ2 | 341.4 | 142.4 | 83.8 | 134.4 | 81.1 | 74.6 | 141.1 | 68.4 | 99.7 |
| df | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| P | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 |