Az oldal 2020-tól nem frissül. Friss információkért látogasson el az alábbi oldalra: https://ojs.lib.unideb.hu/kitaibelia

Kivonat:

The vegetation has been investigated, hydrological and soil parameters (ground water table, pH, conductancy, CaCO₃-content, organic matter content and total N-content) have also been measured on a rich fen-complex near Cluj-Napoca (Romania). Three main vegetation types have been distinguished by numerical methods: Eriophorum latifolium type (1), Schoenus nigricans type (2) and Carex paniculata type (3). These types are corresponding well with the cathegories of the recent Hungarian syntaxonomical system based on the Braun-Blanquet approach. Two rich fen communities (Carici flavae – Eriophoretum latifolii Soó 1944, Junco obtusiflorii – Schoenetum nigricantis Allorge 1921) and a high sedge community (Caricetum paniculatea Wangerin 1916) was distinguished. The vegetation types differ not only in their floristical composition but in their hydrological and soil properties. CaCO₃ content of the soil, and depth of the ground water table proved to be the most important factors influencing the distribution of the vegetation types. Along the gradient of the CaCO₃-content, the Schoenus nigricans type (always with high values) separates from the other two vegetation types (low values). The ground water table values are the highest in the Carex paniculata type. The two fen communities proved to be more similar to each other, than to the Carex paniculata type regarding its floristic composition and the environmental parameters.