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Table I
Average annual concentrations (mg L−1) of different C and N fractions in throughfall solutions (mean ± standard deviation) of the beech and spruce site at Solling (2005–2007).
| DOC | POC | TOC | DN | PON | TN | NO3-N | Residual-N | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mg L−1 | ||||||||||||
| Beech | ||||||||||||
| 2005∗ | 11.50 | ± | 7.07 | 1.00 ± 0.40 | 12.50 | ± | 6.34 | 4.00 ± 2.75 | 0.20 ± 0.15 | 4.20 ± 2.90 | 1.60 ± 0.86 | 2.30 ± 1.10 |
| 2006 | 9.56 | ± | 6.11 | 3.61 ± 2.12 | 13.18 | ± | 4.34 | 3.44 ± 2.74 | 0.66 ± 0.20 | 4.10 ± 2.15 | 1.21 ± 0.45 | 2.24 ± 1.60 |
| 2007 | 5.70 | ± | 1.10 | 1.75 ± 0.95 | 7.82 | ± | 5.34 | 2.16 ± 1.20 | 0.29 ± 0.10 | 2.47 ± 2.30 | 0.83 ± 0.25 | 1.26 ± 0.75 |
| Average | 8.70 | ± | 3.08 | 1.89 ± 0.48 | 10.59 | ± | 6.71 | 3.19 ± 2.11 | 0.36 ± 0.13 | 3.55 ± 2.55 | 1.22 ± 0.98 | 1.29 ± 1.01 |
| Spruce | ||||||||||||
| 2005∗ | 18.16 | ± | 7.51 | 2.95 ± 0.17 | 21.11 | ± | 12.57 | 5.98 ± 3.16 | 0.61 ± 0.12 | 6.59 ± 3.52 | 2.50 ± 1.25 | 3.48 ± 1.98 |
| 2006 | 17.03 | ± | 6.54 | 4.06 ± 1.20 | 21.10 | ± | 9.98 | 4.90 ± 2.96 | 0.77 ± 0.13 | 5.67 ± 3.48 | 1.78 ± 1.62 | 3.09 ± 2.38 |
| 2007 | 11.45 | ± | 5.70 | 1.61 ± 1.12 | 13.06 | ± | 5.78 | 3.02 ± 1.72 | 0.43 ± 0.12 | 3.45 ± 2.75 | 1.17 ± 0.62 | 1.85 ± 1.28 |
| Average | 15.14 | ± | 7.20 | 2.86 ± 1.56 | 18.00 | ± | 9.01 | 4.65 ± 2.90 | 0.58 ± 0.15 | 5.23 ± 3.24 | 1.85 ± 1.30 | 2.82 ± 1.98 |