Table 3.
Measured variables. Description of the topographic characteristics and ecological variables considered, with the indication of the unit and the respective symbol for each variable.
| Topographic and Ecological Variables | Unit | Symbol |
|---|---|---|
| Altitude | m a.s.l. | Alt |
| Slope | ° | Sl |
| Northness | ° | N |
| Canopy Cover | % | CC |
| Canopy Height | m | CH |
| Photosynthetic active radiation at 1.30 m from the soil | (µmol m−2 s−1) | PAR_chest |
| Photosynthetic active radiation at the soil level | (µmol m−2 s−1) | PAR_soil |
| Photosynthetic active radiation in full light condition | (µmol m−2 s−1) | PAR_out |
| Temperature of the topsoil under forest canopy | °C | T_in |
| Temperature of the topsoil outside forest canopy | °C | T_out |
| Temperature of the air | °C | T_air |
| Difference PAR_out-PAR_chest | Δ PAR_chest | |
| Difference PAR_out-PAR_soil | Δ PAR_soil | |
| Difference T_out-T_in | Δ T soil | |
| Total nitrogen | g/kg | N_tot |
| Total extractable carbon | g/kg | C_tot |
| carbon-nitrogen ratio | g/kg | C/N |
| pH in H2O | pH unit | pH |