The effect of tree life span on the last positive point. Estimates are for red maple with conservative maintenance and mulching decomposition scenario.
| Life span (yrs) | Last positive point |
|---|---|
| 1 | None [emission of 9.5 kg C/yr (21 lb C/yr)] |
| 5 | None [average emission of 2.3 kg C/yr (5 lb C/yr)] |
| 10 | 10 years (1 generation) |
| 25 | 125 years (5 generations) |
| 50 | 650 years (13 generations) |
| 100 | 2,400 years (24 generations) |