Information
Ecological parameter: LANDOLT vascular plants - reaction Switzerland (Alpine region)Parameter group: habitat related parameters
Explanation:
The reaction value characterises the content of free H-ions in the soil. Low reaction values indicate acid soils poor in bases, high values correspond to soils rich in bases.
Landolt, E., Bäumler, B., Erhardt, A., Hegg, O., Klötzli, F., Lämmler, W., Nobis, M., Rudmann-Maurer, K., Schweingruber, F.H., Theurillat, J.-P., Urmi, E., Vust, M. & Wohlgemuth, T. (2010): Flora indicativa - Ökologische Zeigerwerte und biologische Kennzeichen zur Flora der Schweiz und der Alpen, 2. Aufl., Haupt Verlag, Bern, Stuttgart, Wien, 378pp.
Classification system: score
Abbreviations:
| Category name | Abbreviation | Explanation |
|---|---|---|
| 1 | 1 | extremely acid, pH 2.5 - 5.5 |
| 2 | 2 | acid, pH 3.5 - 6.5 |
| 3 | 3 | weakly acid to weakly neutral, pH 4.5 - 7.5 |
| 4 | 4 | neutral or alkaline basic, pH 5.5 - 8.5 |
| 5 | 5 | alkaline, high pH, pH over 6.5 - 8.5 |
| x | x | wide range of variation |
| variation | range of variation regarding the reaction value: I - small variation, II - large variation |
| Taxagroup | Number of assigned taxa / total number of taxa - percentage |
|---|