Table 1.
Characteristics of peatland sites
| Site | Location | Yr constructed (age [yr] at sampling) | Water table (cm)a | Methane emission rate (mg m−2 day−1)a | pHb | Bulk density (g cm−3)b |
|---|---|---|---|---|---|---|
| Natural sites | ||||||
| N1, Asusuo | 60°26′N, 23°38′E | 1997 (10) | 2.3 ± 1.0 | 139 ± 67 | 4.6 ± 0.1 | 0.13 ± 0.02 |
| 4.7 ± 0.0 | 0.58 ± 0.13 | |||||
| N2, Kallioneva | 62°16′N, 23°48′E | 1998 (9) | −0.9 ± 0.6 | 707 ± 477 | 5.1 ± 0.0 | 0.08 ± 0.01 |
| 4.9 ± 0.1 | 0.07 ± 0.01 | |||||
| N3, Hirsikangas | 64°04′N, 26°40′E | 1999 (7) | 12.1 ± 0.7 | 227 ± 45 | 5.3 ± 0.1 | 0.12 ± 0.02 |
| 5.1 ± 0.1 | 0.15 ± 0.03 | |||||
| Restored sites | ||||||
| R1, Murtsuo | 61°01′N, 28°19′E | 1997 (11) | 3.6 ± 0.7 | 6.9 ± 3.7 | 5.1 ± 0.0 | 0.25 ± 0.02 |
| 5.2 ± 0.0 | 0.14 ± 0.00 | |||||
| R2, Konilamminsuo | 61°48′N, 24°17′E | 1995 (12) | −14.8 ± 2.1 | 3.0 ± 1.3 | 4.0 ± 0.1 | 0.08 ± 0.02 |
| 4.0 ± 0.1 | 0.08 ± 0.01 | |||||
| R3, Vanneskorpi | 61°51′N, 23°42′E | 1996–1997 (10–11) | −8.9 ± 1.1 | 10.8 ± 3.2 | 4.9 ± 0.1 | 0.35 ± 0.12 |
| 4.6 ± 0.1 | 0.15 ± 0.02 |
a
Growing season mean of eight sampling points ± SE. Water level values are negative below the peat surface.
b
For each site, the top row represents a depth of 0 to 7.5 cm and the bottom row represents a depth of 7.5 to 15 cm (mean ± SE).