Vegetation characteristics of geobiocoenological units of the Kněhyně- ert v mlyn NNR

The paper brings results from the research of vegetation in forest geobiocenoses of the Kněhyně- ert v mlyn National Nature Reserve. The research was made on permanent and complementary research plots. Synthetic phytocoenological tables were presented for six most frequently occurring groups of geobiocoene types only with a brief description of their ecological and chorological character- istics (Sorbi-Piceeta humilia, Sorbi-Piceeta, Abieti-Fageta piceae typica, Fageta abietino-pi- ceosa, Abieti-Fageta piceae and Abieti-Fageta aceris superiora). The occurrence of Sorbus aucuparia is characteristic of all groups of geobiocoene types. Species with a high constancy in all groups of geobiocoene types are for example Athyrium distentifo- lium, Avenella exuosa, Calamagrostis arundinacea, Dryopteris dilatata, Luzula sylvatica, Oxalis acetosella, Polygonatum verticillatum and Rubus idaeus and species with a high coverage are Athyrium distentifolium, Calamagrostis arundinacea, Oxalis acetosella, Rubus idaeus and Vaccinium myrtillus. The results show that vegetation structure is a good indicator of abiotic conditions.