Table 5.
Comparison of the canopy uptake values (mmol m−2 year−1) of H+, NH4+, and NO3− between deciduous (Dec) and coniferous (Con) species during the annual, growing, and dormant periods in this and previous studies
| Canopy uptake (mmol m–2 year–1) | |||||||
|---|---|---|---|---|---|---|---|
| Elements | Annual | Growing | Dormant | Site | |||
| Dec | Con | Dec | Con | Dec | Con | ||
| H+ | 55.9 (14.2) | 61.0 (7.9) | 43.9 (4.2) | 41.0 (2.3) | 13.0 (8.2) | 22.4 (8.6) | Ontario |
| 57.9 | 49.4 | 52.0 | 35.5 | 4.9 | 14.3 | Quebec | |
| 6.1 | 1.0 | 3.8 | 0.8 | 0.3 | 0.5 | Merksplas | |
| 68.6 (15.7) | 116.3 (19.4) | 53.2 (29.4) | 76.7 (13.4) | 13.8 (7.6) | 35.6 (8.3) | Chichibu | |
| 121.4 (12.1) | 106.7 (14.7) | 108.1 (11.0) | 78.0 (11.7) | 13.4 (3.6) | 28.3 (4.9) | Tanashi | |
| NH4+ | 4.1 (1.8) | 3.4 (0.8) | 4.4 (1.9) | 3.1 (0.8) | 0.7 (0.5) | 0.9 (0.3) | Ontario |
| 4.4 | 2.7 | 4.7 | 2.0 | 0.3 | 0.7 | Quebec | |
| 32.0 | 20.5 | 32.8 | 18.4 | 1.0 | 4.9 | Merksplas | |
| 36.3 (7.6) | 17.7 (3.2) | 31.2 (14.7) | 10.7 (2.7) | 5.8 (3.0) | 6.4 (1.8) | Chichibu | |
| 58.2 (7.0) | 52.4 (6.4) | 53.1 (6.7) | 37.9 (5.4) | 5.1 (1.7) | 14.1 (2.2) | Tanashi | |
| NO3− | 1.4 (0.4) | 1.7 (0.3) | 1.0 (0.0) | 1.1 (0.0) | 0.3 (0.2) | 0.6 (0.3) | Ontario |
| 1.4 | 1.2 | 1.1 | 0.8 | 0.1 | 0.3 | Quebec | |
| 4.7 | 2.1 | 5.6 | 2.0 | 1.1 | 0.5 | Merksplas | |
| 5.4 (1.2) | 9.6 (1.3) | 3.0 (1.1) | 4.8 (1.5) | 2.0 (1.1) | 4.2 (1.7) | Chichibu | |
| 6.9 (0.9) | 9.3 (1.3) | 5.9 (0.8) | 7.0 (1.3) | 0.9 (0.3) | 2.2 (0.3) | Tanashi | |
Values in parentheses are standard deviations