Table 3 The comparison of SOC content and bulk density in east China on a broad scale, including north-eastern China, middle-eastern China, and south-eastern China
From: Variations of forest soil organic carbon and its influencing factors in east China
Geographic region | Soil layer | Thickness (cm) | D b (g cm−3) | SOC (g C kg−1) |
|---|---|---|---|---|
North-eastern China | Organic horizon | 25 ± 15 | 0.88 ± 0.25Ab | 50.6 ± 54.4Aa |
Mineral horizon | 53 ± 25 | 1.40 ± 0.33Aa | 15.5 ± 40.3Ba | |
Profile | 78 ± 23 | 1.29 ± 0.31a | 20.9 ± 38.3a | |
Middle-eastern China | Organic horizon | 28 ± 21 | 1.12 ± 0.16Aa | 20.4 ± 20.8Ab |
Mineral horizon | 57 ± 28 | 1.31 ± 0.42Aa | 7.44 ± 9.43Bb | |
Profile | 82 ± 26 | 1.24 ± 0.19a | 12.2 ± 11.7b | |
South-eastern China | Organic horizon | 20 ± 7 | 1.16 ± 0.22Aa | 27.7 ± 26.5Ab |
Mineral horizon | 65 ± 28 | 1.32 ± 0.20Aa | 16.2 ± 31.8Aa | |
Profile | 84 ± 30 | 1.28 ± 0.19a | 19.3 ± 26.8a | |
Total region | Organic horizon | 23 ± 15 | 1.06 ± 0.25A | 33.5 ± 23.5A |
Mineral horizon | 58 ± 27 | 1.35 ± 0.32A | 13.5 ± 25.7B | |
Profile | 82 ± 27 | 1.26 ± 0.24 | 17.5 ± 25.5 |