Table 3: Comparison of SOC content in different stands (mean ± SD, = 30).

Soil layer
0–10 cm10–20 cm20–30 cm30–40 cm40–50 cm50–60 cm

UR (g·kg−1)
CK (g·kg−1)
Difference relative to CK (%)28.0434.1328.7721.8416.094.79
Annual variation (g·kg−1·y−1)−0.21−0.18−0.11−0.07−0.05−0.01

Values within the same column with different lowercase letters are significantly different at .