Table 1: Summary results of soil carbon analysis and soil CO2 flux measurements. = 50 for control and lupine; = 75 for grass and GBW (grass-birch-willow). Mean shown ± standard error. SD = standard deviation. Soil carbon stock calculated as kg m−2 elemental carbon. CO2soil measurement in μmol m−2 sec−1.

TreatmentA Csoil %B Csoil %Soil C stockCO2soil

ControlMean0.35 ± 0.020.360.43 ± 0.020.59 ± 0.06
SD0.110.140.58
Range0.13–0.580.20–1.060.01–2.65

GrassMean0.48 ± 0.020.380.33 ± 0.010.52 ± 0.04
SD0.180.110.33
Range0.28–1.110.02–0.620–1.67

GBWMean0.64 ± 0.030.520.5 ± 0.020.49 ± 0.06
SD0.240.180.48
Range0.34–1.320.25–1.210–3.73

LupineMean0.67 ± 0.030.610.65 ± 0.032.9 ± 0.23
SD0.230.211.61
Range0.18–1.230.26–1.220.28–7.06