Ábrahám Levente (szerk.): Válogatott tanulmányok IV. - Natura Somogyiensis 15. / Miscellanea 4. (Kaposvár, 2009)
Ortmanné Ajkai Andrienne - Horváth Ferenc: Külső-Somogytól a Mecsekig: DNX Magyarország három dombvidékének vegetációja
Ortmann-né Ajkai A. & Horváth F.: From Külső-Somogy to Mecsek Hills 25 dominant oak-hornbeam woodlands (K2, 3700 ha), beech woodlands (K5) and acid oakhombeam woodlands (K7b); only acid beech woodlands (K7a) are missing. Dominant mesic woodlands in Völgység are also hornbeam-oak forests (2400 ha), and we can find some beech forests (K5, 60 ha) on northern slopes of the above-mentioned large forest block. Of mesic woodlands only hornbeam-oak forests occur in Tolnai-hegyhát with a total area of 750 ha, but it is far less then coverage of dry woodlands (3000 ha). Complementarily to mesic woodlands, area of dry woodlands increases with increasing continentality. According to climatic gradients, area percentages of dry woodlands (especially that of turkey oak - sessile oak woodlands (L2a) and of closed and mixed steppe oak woodlands (L2x)) increasing from SW to NE (Fig. 7). Closed and mixed steppe oak woodlands even become dominant in some quadrants of Tolnai-hegyhát. Völgység and Tolnai-hegyhát are separated most distinctly by this attribute. Explosive area increase of closed and mixed steppe oak woodlands (L2x) is especially remarkable. (Fig. 8). Our analyses support Zólyomi’s "map of natural vegetation" so far that Tolnai-hegyhát belongs to vegetational zones of turkey oak - sessile oak woodlands and closed and mixed steppe oak woodlands, but does not support that Baranyai-hegyhát lays in zones of turkey oak - sessile oak woodlands and illyrian hornbeam-oak forests, and Völgység wholly in turkey oak - sessile oak zone. According to our data, Baranyai-dombság lays clearly in hornbeam-oak zone, and Völgység in hornbeam-oak and turkey - sessile oak zones, so the border between hornbeam-oak and closed and mixed steppe oak woodlands zones seems to be situated more to the east compared to Zólyomi’s map. Our results support Hungary’s new vegetation-based landscape regions (Molnár et al. 2008) as long as Baranyai-hegyhát belongs to Mecsek, and Völgység - showing a transitory character beetween the two others in most of our analyses - can be grouped here too because of absence of closed and mixed steppe oak woodlands. Its being a separate region is neither supported by our results. Acknowledgements MÉTA Project was financed by the grant of OM-NKFP/2002: "Magyarország természetes növényzeti örökségének felmérése és összehasonlító elemzése". Further botanists performing field data collection in these regions are: R. Bányai, J. Csiky, J. Dávid, Á. Fridrich, P. Lőrincz, G. Mányoki, T. Morschhauser, К. Rudolf, T. Kovács, G. Osztermayer, Cs. Tóth, A. Varga, J. Zsidákovits.
