科研之友
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摘要
Situated at the interface of Central European and Illyrian vegetation, the mesic forests of southwestern Hungary occupy a special position. Despite their importance in vegetation science and conservation, a comprehensive study of the Illyrian mesic forests of the Villany Mts, the southernmost mountain region in Hungary, has not been provided yet. In this study 60 phytocoenological releves were prepared in the beech, oak-hornbeam, ravine and scree forests of the Villany Mts. To compare the individual associations, we performed a PCoA-ordination, calculated the per plot species number and the per plot protected species number, computed the percentage constancy values of the protected species, identified significant diagnostic species, and prepared the spectra of the coenological preference groups. We used relative ecological indicator values to assess habitat conditions. The PCoA-ordination, the coenological preference group spectra, and to a certain extent the ecological indicator values suggested that the different mesic forests of the Villany Mts show certain similarities. This is probably due to the fact that beech forests and ravine forests are confined to small and atypical stands by the suboptimal environmental conditions. Nonetheless, the number of diagnostic species and the constancy values of protected plants indicated that significant differences do exist between the four associations, the scree forest being the most distinct. We conclude that oak-hornbeam forests and scree forests of the Villany Mts have a regional conservation importance, while the beech and ravine forests are locally important, enhancing the structural, floristical and habitat diversity of the Villany Mts.
- 出版日期2017-5
