Table 4.
Annual fine root length and surface area production (SA) per square meter ground area in 0–10 cm, 10–20 cm, 20–30 cm soil depth and for the profile (0–30 cm).
| Species | Depth (cm) | Length (m m-2 year-1) | SA (cm2 m-2 year-1) |
|---|---|---|---|
| Fraxinus excelsior | 0–10 | 1455 ± 479aA | 17504 ± 5604aA |
| 10–20 | 1210 ± 231aA | 14984 ± 2976aA | |
| 20–30 | 638 ± 202bABC | 8660 ± 2350bABC | |
| Profile | 3303 ± 639 A | 41148 ± 7345 A | |
| Acer pseudoplatanus | 0–10 | 903 ± 269aA | 11617 ± 4004aAB |
| 10–20 | 340 ± 73aBC | 3473 ± 945aB | |
| 20–30 | 333 ± 72aABC | 4376 ± 978aABC | |
| Profile | 1576 ± 300 B | 19465 ± 4759 B | |
| Acer platanoides | 0–10 | 907 ± 248aA | 11030 ± 3140aAB |
| 10–20 | 933 ± 209aABC | 10644 ± 2504aAB | |
| 20–30 | 695 ± 188aAC | 7584 ± 1927aAC | |
| Profile | 2535 ± 343 AB | 29259 ± 4235 AB | |
| Carpinus betulus | 0–10 | 1519 ± 567abA | 13877 ± 4402aAB |
| 10–20 | 1089 ± 268aAC | 10213 ± 2191aA | |
| 20–30 | 553 ± 171bAB | 5528 ± 2093bAB | |
| Profile | 3161 ± 796 A | 29618 ± 6408 AB | |
| Tilia cordata | 0–10 | 545 ± 179aA | 6524 ± 2263aB |
| 10–20 | 615 ± 214aC | 7665 ± 2666aAB | |
| 20–30 | 275 ± 102aB | 3918 ± 1331aA | |
| Profile | 1359 ± 395 B | 17149 ± 5376 B | |
| Fagus sylvatica | 0–10 | 560 ± 186aA | 8036 ± 2109aAB |
| 10–20 | 808 ± 216abABC | 10074 ± 2622abABC | |
| 20–30 | 1095 ± 202bC | 13589 ± 3052aC | |
| Profile | 2462 ± 417 AB | 31699 ± 5106 B |
Given are mean ± SE for eight plots. Statistically significant differences between the soil depths are indicated by different lower case letters, significant differences between the species in a soil depth by different capital letters; differences between the species in the 0–30 cm profile are indicated by bold capital letters (Mann–Whitney U-test; p < 0.05).