Table 2 Selected soil characteristics and winter soil CO2 flux at the different quantities of nitrogen additions treatments under natural snow fall.

From: Annual soil CO2 efflux in a cold temperate forest in northeastern China: effects of winter snowpack and artificial nitrogen deposition

 

Control-N

Low-N

Medium-N

High-N

Winter Soil Temperature (°C)

−0.19 ± 1.52

−0.21 ± 1.24

0.14 ± 1.13

−1.96 ± 3.50

Winter Soil Moisutre (%)

0.54 ± 0.34

0.63 ± 0.45

0.64 ± 0.44

0.60 ± 0.46

pH

4.58 ± 0.34

4.58 ± 0.34

4.60 ± 0.35

4.60 ± 0.35

Soil Carbon Density (kg C·m−2)

14.28 ± 5.87

14.41 ± 4.67

14.83 ± 5.69

14.85 ± 3.94

Soil Nitrogen Density (kg N·m−2)

2.03 ± 0.59

1.96 ± 0.64

2.01 ± 0.72

2.15 ± 0.52

Winter Soil CO2 Flux (μmol CO2 ·m–2 ·s–1)

0.59 ± 0.15

0.47 ± 0.21

0.61 ± 0.17

0.63 ± 0.23

  1. The differences of all parameters are not statistically significant.
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