Würzburg
    W B5FH49°49.041′N, 9°54.955′EPodsolige Braunerde (Cambisol)Mixed forest (Fagus sylvatica, Carpinus betulus, Pinus sylvestris, Larix decidua)6.30.440.3333
    W B5FP49°48.960′N, 9°54.804′EPodsolige Braunerde (Cambisol)Mixed forest (Acer pseudoplatanus, Fagus sylvatica, Quercus robur, Pinus sylvestris)6.90.490.2060
    W Re4F49°51.540′N, 9°54.521′EProtorendzina (Leptosol)Deciduous forest (Carpinus betulus, Prunus sp., Quercus robur, Acer campestris)6.10.290.1546
    W Re1F49°52.553′N, 9°52.355′EProtorendzina (Leptosol)Mixed forest (Pinus sylvestris, Quercus petraea, Fagus sylvatica, Acer campestre)7.60.370.1558
    W Re3W49°52.234′N, 9°51.684′EMullartige Rendzina (Leptosol)Meadow7.80.740.3453
July 2002
    E 5FB50°43.461′N, 9°47.118′ERendzina (Leptosol)Mixed forest (Fagus sylvatica, Quercus sp., scattered Pinus sylvestris)6.51.520.21177
    MF51°00.000′N, 9°50.625′EBraunerde (Cambisol)Mixed forest (Fagus sylvatica, Quercus robur)4.32.621.5840
    G 15F51°33.974′N, 10°0.657′EPseudogley Parabraunerde (Gleyic Luvisol)Deciduous forest (Fagus sylvatica, scattered Tilia platiphyllas, Acer pseudoplatanus)7.90.781.5313
    G 13FH51°31.096′N, 10°2.171′ERendzina (Leptosol)Deciduous forest (Fagus sylvatica, Fraxinus excelsior, Acer platanoides)6.80.80
    G 44F51°30.423′N, 10°1.167′ERendzina (Leptosol)Deciduous forest (Fagus sylvatica, Fraxinus excelsior)7.91.801.0243
    G 44W51°30.411′N, 10°1.154′ERendzina (Leptosol)Meadow8.01.38
  • a Kinetic values are the maximum zero-order methane uptake rate (Vmax(app) [nanomoles of CH4 per gram of dry weight per hour]), the apparent Michaelis-Menten kinetic constant (Km(app) [ppmv of CH4]), which was calculated from Vmax(app)/a0s, and the specific affinity (a0s [milliliters of gas per gram of dry weight per hour]). a0s is a first-order rate constant. The unit milliliters refers not to milliliters of CH4 but rather to standardization to a 1-ml total gas volume. To calculate rates of atmospheric methane uptake at 25°C multiply a0s by the mixing ratio of methane in the atmosphere (1.7 ppmv of CH4 = 0.071 nmol of CH4 ml−1).

  • b Sample was not analyzed by molecular methods.

  • c FAO, Food and Agriculture Organization of the United Nations.