Parameter [Acronym] | Value (rank or label) |
---|---|
Age of tree stands (years) [ATS] | 1–10 (1), 11–30 (2), 31–60 (3), 61–100 (4), > 100 (5) |
Tree stand structure [TSS] | One-layered (1), Two-layered (2), Multi-layered (3) |
Percentage share of Scots pine (%) [PSP] | < 20 (1), 20–50 (2), 50–70 (3), 70–90 (4), > 90 (5) |
Canopy closure of the upper layer [CCUL] | Open (1; 0–30% of ground covered by crowns), Loose (2; 31%–50%), Discontinuous (3; 51%–70%), Moderate (4; 71%–90%), Full (5; > 91%) |
Canopy closure of the lower layer [CCLL] | Open (1; 0–30% of ground covered by crowns), Loose (2; 31%–50%), Discontinuous (3; 51%–70%), Moderate (4; 71%–90%), Full (5; > 91%) |
Percentage cover of shrub layer (%) [PCS] | < 10 (1), 10–20 (2), 20–40 (3), 40–60 (4), > 60 (5) |
Ground vegetation height (cm) [GVH] | < 10 (1), 10–20 (2), 20–30 (3), 30–40 (4), 50–60 (5), 60–70 (7), 70–80 (8), > 80 (9) |
Percentage cover of bilberries (%) [PCB] | Absence (1), 1–10 (2), 10–20 (3), 20–30 (4), 30–40 (5), > 40 (6) |
Soil moisture [SM] | Dry (1), Fresh (2), Wet (3), Bog (4) |
Soil fertility [SF] | Oligotrophic (1), Mesotrophic (2), Eutrophic (3) |
Distance from roads (m) [DFR] | < 10 (1), 10–50 (2), 50–100 (3), 100–150 (4), > 150 (5) |
Presence of habitat elements [PHE] | Absence (1), one element present (2), two elements present (3), three elements present (4) |
Number of trees with diameter of ≥7 cm(N/ha) [TN] | Range from 0 to 16,000 trees per hectare |