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
22 Natura Somogyiensis Distribution of grassland types (based on occurrence) Mesophilous Dry and semi-dry I I Pastures with trees Fig. 6: Distribution of grasslands Grassland habitats mentioned above covers 2300 ha, about half so much as uncharacteristic and bushy grasslands together. Natural and semi-natural grassland cover 11% of natural and semi-natural habitats, 1.9% of total area, most in Tolnai-hegyhát: 15% vs 2.4%. Area of grasslands increases with increasing continentality. Most of natural and semi-natural grassland are dry or semi-dry ones (Group H, 1500 ha), occurring in all (whole) quadrants, on hillsides too steep for profitable cultivation, often secondarily on places of former vineyards. Two widespread types: closed steppes on loess and clay (H5a) and Bromus erectus - Brachypodium pinnatum xero-mesophilous grasslands, dry tall herb communities and forest steppe meadows (H4) are present in all three regions, Closed sand steppes (H5b) occur only in Tolnai-hegyhát. Areal distribution of two widespread dry grassland types also corresponds well with the SW-NE climatic gradient: area of Bromus erectus - Brachypodium pinnatum xeromesophilous grasslands, dry tall herb communities and forest steppe meadows (H4), replacing former forests after cutting decreases, area of closed steppes on loess and clay (H5a) increases with increasing continentality. H4 type (also herbaceous layer of wooden pastures) characterises Baranyai-hegyhát, with more forests and more atlantié climate; grasslands of Tolnai-hegyhát belongs almost completely to H5a; the latter one dominates also in the middle-situated Völgység, but not exclusively. Mesotrophic and hay meadows cover far less area and their distribution is more rhapsodic. From group D mesotrophic meadows (D34) and tall herb communities (D5, D6)
