Table 1. Bulk soil texture, pHCaCl2 values and elemental composition given as mean ± standard deviation (SD) (n = 3).
Total C and N concentrations were determined by dry total combustion, all other total elemental concentrations were determined by microwave-assisted digestion in aqua regia. Different lowercase letters indicate significant (P<0.05) differences with time for bulk samples, respectively, whereas different uppercase letters indicate significant differences of bulk samples at the respective sampling time.
| Sampling year | Treatment | Texture [%] | pH CaCl2 | C | N | C:N | P | S | Ca | Mg | Fe | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clay | Silt | Sand | [–] | [g kg-1] | [g kg-1] | [–] | [mg kg-1] | [g kg-1] | |||||
| Bulk topsoil | |||||||||||||
| 2013 | Native | 27.8±0.8 | 57.2±1.4 | 15.0±0.6 | 3.4±0.1 A | 63.4±4.2 A | 3.3±0.5 A | 19.2±0.9 A | 580±22 | 405±18 A | 240±31 a | 2.4±0.2 | 34.4±0.7 A |
| 2014 | 3.5±0.1 A | 49.6±3.5 A | 2.4±0.1 A | 20.7±2.4 A | 589±31 | 430±19 | 200±24 aA | 2.5±0.4 | 33.5±0.9 A | ||||
| 2015 | 3.6±0.2 | 58.7±2.4 A | 3.4±1.0 A | 17.3±0.7 A | 620±29 A | 370±35 | 311±12 b | 2.2±0.1 | 33.6±1.2 A | ||||
| Bulk subsoil | 25.4±3.3 | 54.7±1.3 | 19.9±4.3 | ||||||||||
| 2013 | Native | 4.1±0.1 aB | 9.3±0.1 B | 1.2±0.1 B | 7.8±0.1 B | 561±54 | 324±53 B | 282±15 | 2.4±0.1 | 39.4±2.4 aB | |||
| 2014 | 4.2±0.2 aB | 9.9±0.2 B | 1.2±0.2 B | 8.3±0.6 B | 495±43 | 402±43 | 324±41 B | 2.1±0.2 | 42.1±1.3 aB | ||||
| 2015 | 3.8±0.1 b | 9.2±0.4 B | 1.3±0.1 B | 7.1±0.5 B | 502±34 B | 367±21 | 334±27 | 1.9±0.1 | 48.3±1.9 bB | ||||
| Bulk topsoil | |||||||||||||
| 2013 | Clear-cut | 24.4±1.9 | 59.7±0.8 | 15.9±2.6 | 2.9±0.1 aA | 57.4±3.5 aA | 3.3±1.2 aA | 17.4±0.8 A | 543±18 a | 420±12 | 370±31 A | 4.3±0.4 aA | 32.1±0.6 aA |
| 2014 | 3.5±0.3 bA | 76.7±0.0 bA | 4.2±0.1 bA | 18.5±0.1 A | 590±10 b | 410±20 | 400±30 | 5.1±0.3 aA | 40.3±0.8 b | ||||
| 2015 | 3.6±0.1 bA | 97.8±5.8 cA | 6.1±0.5 cA | 16.2±2.2 A | 634±12 c | 409±32 | 378±18 A | 2.1±0.4 b | 38.3±0.9 bA | ||||
| Bulk subsoil | |||||||||||||
| 2013 | Clear-cut | 27.7±0.3 | 53.5±4.9 | 18.9±4.6 | 4.2±0.1 B | 9.1±0.2 B | 1.3±0.0 B | 7.0±0.2 aB | 523±27 a | 386±19 a | 305±18 aB | 2.2±0.1B | 45.2±1.1 aB |
| 2014 | 4.1±0.1 B | 8.6±0.2 B | 1.1±0.0 B | 7.8±0.2 aB | 584±59 a | 438±46 a | 365±29 b | 2.7±0.3 B | 38.2±2.4 b | ||||
| 2015 | 4.1±0.0 B | 18.9±0.3 B | 1.9±0.1 B | 9.9±0.2 bB | 630±30 b | 510±70 b | 308±18 aB | 2.1±0.2 | 33.6±1.9 cB | ||||
Samples were taken 10 and 24 month after clear-cut; n.d.: not determined as sample was already soil microaggregate fraction