Table 7 Definition of the deviation levels from the reference state
Indicator | Total span | Classification of deviations from the reference condition | ||||
|---|---|---|---|---|---|---|
Very low | Low | Medium | High | Very high | ||
Habitat function | ||||||
Kullback Distance | 0.0–4.0 | Range between 0 and respective maximal Kullback distance | Quartering of the remaining interval | |||
Percentage similarity of plant species quantity distribution | 0–100% | Interval from 100% to minimum percentage similarity | Quartering of the remaining interval | |||
Net primary production | ||||||
Average net primary production | 0–∞t TS/ha | Values above the average net primary production of tree wood | Quartering of the remaining interval | |||
Carbon storage | ||||||
Carbon stock | 0–t/ha∞ | Values above the individual value for the mean carbon stock (or mean value for ranges) | Quartering of the remaining interval | |||
Nutrient flow | ||||||
pH | ||||||
Material cycle type A | pH 2.5–5 | MW ± 1 SD | MW ± 2 SD | MW ± 3 SD | Halving of the remaining interval within the total span width specific to the material cycle type | |
Material cycle type B | pH 2–6 | |||||
Material cycle type C | pH 2–8 | |||||
Material cycle type D | pH 3–8 | |||||
Material cycle type E | pH 3.5–8 | |||||
Base saturation | ||||||
Material cycle type A | 0–30% | MW ± 1 SD | MW ± 2 SD | MW ± 3 SD | Halving of the remaining interval within the material cycle type-specific total span | |
Material cycle type B | 0–50% | |||||
Material cycle type C | 0–100% | |||||
Material cycle type D | 5–100% | |||||
Material cycle type E | 15–100% | |||||
C/N ratio | ||||||
Material cycle type A | 17–50 | MW ± 1 SD | MW ± 2 SD | MW ± 3 SD | Halving of the residual interval within the material cycle type-specific total span | |
Material cycle type B | 13–50 | |||||
Material cycle type C | 6–50 | |||||
Material cycle type D | 6–36 | |||||
Material cycle type E | 6–26 | |||||
Leaf/needle mirror values | ||||||
Nitrate | 0–4.0% by weight | MW ± 1 SD | MW ± 2 SD | MW ± 3 SD | Halving of the remaining interval within the substance-specific total span width | |
Phosphor | 0–0.6% by weight | |||||
Potassium | 0–2.5% by weight | |||||
Calcium | 0–2.65% by weight | |||||
Magnesium | 0–0.6% by weight | |||||
Water flow | ||||||
Soil moisture index according to Hofmann (20,002) | 0 (= extremely dry) to 11 (= flooded) | MW ± 1 SD | MW ± 2 SD | MW ± 3 SD | Halving of the remaining interval within the total span width | |
Adaptation to changing environmental conditions | ||||||
Similarity of tree species composition | 100–0% | 100–60% | < 60–45% | < 45–30% | < 30–15% | < 15–0% |