Ábrahám Levente (szerk.): Válogatott tanulmányok III. - Natura Somogyiensis 12. (Kaposvár, 2008)

Salamon-Albert Éva-Horváth Ferenc: Vegetation of Külső-Somogy in Hungary II.

O ^ O ^ e % V 1 • * • % t * • g» 0 • m • i # # m 0 m i • % • m •ft ^ E group iÜ H group I ^ OC d ry and semi-dry 1Ûkms 20 30 40 grassland naoitats J. .'| Fig. 6: Territorial extension (circle diameter) and proportion (circle segment) of dry and semi-dry grassland habitats in Külső-Somogy eastern parts of the region. The major component of them is 'uncharacteristic dry or semi-dry grasslands and tall herb communities' (OC). Quadrats which have medium or large cover of these types of grasslands are less diverse in habitats, quadrats which include small summarized territories of this habitat type are more diverse with 2-3 habitat types per quadrat. In the spatial map of 'xero-mesophilous closed grasslands' existing under climatic influence are clearly distinguished by three main habitat types (H4, H5a, H5b) (Fig. 7). Landscape pattern of'Bromus erectus-Brachypodium pinnatum xero-mesophilous grasslands' (H4) and 'closed steppes on loess, clay, tufa' (H5a) are distinct and spatially composite. Occurrence of'closed sand steppes' (H5b) could be observed only in a small territory of the region in the valid quadrats exclusively. Habitats of 'xero-mesophilous grasslands' (H-group) are completely absent in the South part of Külső-Somogy region. Discussion In our study we have discussed the areal proportion, distribution and regional spatial patterns of non-woody habitat types at landscape scale in Külső-Somogy. Analysing regional extension data, more than half of the territory of woodlands is covered by disturbed non-woody vegetation, mainly by the wet habitat types. Semi-natural dry and semi-dry grasslands have the second major areal proportion in the region, they are in subordinated position principally in the central-south and eastern parts. Several types of wet grasslands (e.g. A-group, B-group, D-group, O-group) generally occure in the region