Table 3.
Overview of the belowground carbon pools in the short‐rotation coppice culture: fine roots (Fr), medium‐sized roots (Mr), coarse roots (Cr), stumps (Stu) and soil organic matter (SOM), before planting (winter 2010) and at the end of each growing season (winters 2011, 2012, 2013 and 2014). No differences were detected in Fr for genotypes (Skado and Koster) under both previous land‐use types (cropland and pasture). Fr data were pooled, and the mean and SE (in brackets) are presented. For all other pools, significant differences (anova, P < 0.05) were detected; the mean and the range given by the mean values of the combination of genotype*land‐use type are presented. SE, standard error. See Berhongaray et al. (2015) for more information on the statistics
| Depth | Fr (0–1 mm) | Fr (1–2 mm) | Mr (2–5 mm) | Cr (>5 mm) | Stu | SOM | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SE | Mean | SE | Mean | Range | Mean | Range | Mean | Range | Mean | Range | ||
| g C m−2 | |||||||||||||
| Winter 2010 | 0–15 cm | 0.00 | – | 0.00 | – | 0.00 | – | 0.00 | – | 0.00 | – | 3473 | 3260–3700 |
| 0–60 cm | 0.00 | – | 0.00 | – | 0.00 | – | 0.00 | – | 0.00 | – | 10325 | 9570–11600 | |
| Winter 2011 | 0–15 cm | 4.5 | ±1.48 | 1.2 | ±0.29 | – | – | – | – | – | – | – | |
| 0–60 cm | – | – | – | – | – | – | – | – | – | – | – | – | |
| Winter 2012 | 0–15 cm | 14.2 | ±0.77 | 7.1 | ±1.28 | 18.2 | 26–65 | 40.1 | 27–51 | – | – | – | – |
| 0–60 cm | 33.9 | – | 21.0 | – | 41.2 | 74–118 | 51.9 | 33–67 | 129.3 | 93 –156 | – | – | |
| Winter 2013 | 0–15 cm | 10.4 | ±0.92 | 6.1 | ±0.81 | – | – | – | – | – | – | – | – |
| 0–60 cm | 24.8 | – | 12.0 | – | – | – | – | – | – | – | – | – | |
| Winter 2014 | 0–15 cm | 22.6 | ±1.96 | 13.2 | ±4.03 | 19.6 | 32–68 | 34.8 | 32–43 | – | – | 3242 | 3170–3330 |
| 0–60 cm | 54.1 | – | 26.0 | – | 41.4 | 86–120 | 73.6 | 66–90 | 167.6 | 152–205 | 14046 | 11 000–15 260 | |