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Table III
Temporal linear variations (1993 to 2005) of the foliar concentrations for the various plot groups. The slope sign is given by “+” and “–” and the degree of significance is codified as follows: P < 0.1: (+) or (–), P ≤ 0.05: + or –, P ≤ 0.01: ++ or – –, P 60.001: +++ or – – –.
| n | Data set1 | Mass of100 leaves | N | S | P | Ca | Mg | K | |
|---|---|---|---|---|---|---|---|---|---|
| Pedonculate oak | 9 | full | – | – | (–) | ||||
| acid soils | restricted | (+) | – – – | – | |||||
| Sessile oak | 22 | full | – | – – | |||||
| acid soils | restricted | (–) | – – | – | (–) | – | |||
| European beech | 18 | full | + | (–) | – – – | – | |||
| acid soils | restricted | (+) | – – – | ||||||
| European beech | 8 | full | – – | – | |||||
| eutrophic soils | restricted | – – | – |