Vegetation of beech forests in the Rychlebské Mountains, Czech Republic, re-inspected after 60 years with assessment of environmental changes

摘要: From 1941–;1944 nearly 30 phytosociological releves were completed by F. K. Hartmann in the Rychlebske Mountains, a typical mountainous area northeastern Czech Republic. Of original plots still covered with adult grown beech (Fagus sylvatica) forest, 22 resampled 1998 and 1999. In order to describe recent vegetation variability of sites 57 recorded. Changes estimated using relative changes species density ordinations (PCA, RDA). Environmental assessed Ellenberg indicator values when no direct measurements available. A decline diversity has been documented, particularly, many occurring frequently deciduous forests nutrient moisture well-supplied soils around neutral have decreased. contrast, several light-demanding, acid- soil desiccation-tolerant increased. Natural succession, quantified as forest age, contributed slightly these changes. values, F (soil moisture), R calcium) N (ecosystem productivity), an increase L (understorey light) shown. This is interpreted influence modified forestry management airborne pollutants. Intensified logging caused canopy open conditions worsen. The latter most likely also due acid leaching cations (Ca, K, Na). productivity, thus effect nitrification could not be detected. may differed size influencing results.