Table 1 Characteristics of experimental plots.
Characteristics | FCP | SCP | TCP |
|---|---|---|---|
Altitude (m) | 232 | 275 | 239 |
Slope | 30° | 31° | 28° |
Slope aspect | ES40° | ES35° | ES40° |
Average diameter at breast height (cm) | 17.39 | 13.27 | 11.94 |
Average height (m) | 13.61 | 10.52 | 9.03 |
Stand density (stem/ha) | 930 | 945 | 945 |
Soil pH | 5.83 ± 0.26a | 5.64 ± 0.33a | 5.28 ± 0.21a |
Total organic carbon (TOC, g·kg−1) | 23.54 ± 0.30a | 20.09 ± 0.46c | 21.37 ± 0.15b |
Total nitrogen (TN, g·kg−1) | 1.23 ± 0.01a | 0.98 ± 0.01b | 0.96 ± 0.01b |
Available nitrogen (AN, mg·kg−1) | 35.84 ± 0.88a | 30.42 ± 0.97b | 26.11 ± 1.28c |
Total phosphorus (TP, g·kg−1) | 0.45 ± 0.01a | 0.40 ± 0.01a | 0.33 ± 0.01b |
Available phosphorus (AP, mg·kg−1) | 3.28 ± 0.11ab | 3.56 ± 0.14a | 2.97 ± 0.15b |
Total potassium (TK, g·kg−1) | 18.51 ± 0.45a | 17.38 ± 0.29a | 15.74 ± 0.38b |
Available potassium (AK, mg·kg−1) | 140.66 ± 2.65a | 125.17 ± 3.17b | 123.29 ± 1.97b |
C:N | 19.13 | 20.50 | 22.26 |
