Table 1.
Organic Topsoilb | Mineral Topsoilb | Mineral Subsoilb | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Coordinates | Mean Annual Temperature (MAT)a | Mean Annual Precipitation (MAP)a | Dominant Plant Species | Soil Type | Horizon | Depth | Horizon | Depth | Horizon | Depth | |
Tundra | 67°16′N 78°50′E | −7.6 | 392 | Betula nana, Cladonia spp. | Turbic Cryosol | O | 0–6 | A | 2–13 | Bg, BCg | 6–57 |
Northern taiga | 63°17′N 74°32′E | −4.6 | 430 | Picea obovata, Larix sibirica | Histic Podzol | Oi, Oe | 0–22 | AE, EA | 8–30 | Bg | 14–47 |
Middle taiga | 60°09′N 71°43′E | −2.2 | 438 | Abies sibirica, Picea obovata | Endogleyic Regosol | Oi | 0– 6 | A, AE, EA | 6–14 | E, EA | 12–55 |
Southern taiga | 58°18′N 68°35′E | −0.5 | 396 | Picea obovata, Abies sibirica | Albic Podzol | Oi | 0–7 | A, AE | 4–18 | E, EA | 15–59 |
Forest steppe: Forest | 56°14′N 70°43′E | 0.7 | 340 | Populus tremula, Betula pendula | Haplic Phaeozem | O, Oa | 0–10 | A | 7–46 | B | 57–109 |
Forest steppe: Meadow | 56°14′N 70°43′E | 0.7 | 340 | Calamagrostis epigeios, C. arundinacea | Luvic Phaeozem | Oa | 0–7 | A | 4–35 | Bt | 26–84 |
Steppe | 54°41′N 71°38′E | 1.0 | 309 | Stipa capillata, Festuca valesiaca | Calcic Kastanozem | OA | 0–12 | Ak | 8–37 | Bk | 27–109 |
MAT: mean annual temperature (in °C); MAP: mean annual precipitation (in mm).
Horizon description and sampling depth (in cm) for organic topsoil, mineral topsoil, and mineral subsoil sampled in five replicate soil pits at each site.