L. Lőkös szerk.: Studia Botanica Hungarica 27-28. 1996-97 (Budapest, 1978)

Szerdahelyi, Tibor, Penksza, Károly, Dobolyi, Konstantin Z., Szollát, György, Kapocsi, Judit; Figeczky, Gábor: Vegetation and point-mapping survey in the strictly protected areas of the landscape protection area of the Pilis Mts (Hungary)

RESULTS AND DISCUSSION Surroundings of Kis-Szoplák and Nagy-Szoplák Strictly protected area on the forestry area of Pilisszentkereszt (IV) Forest ranges 1-6: On the larger part of the area Melitti-Fagetum hungaricum and Querco petraeae-Carpinetum pannonicum stands can be found. On the top and the eastern rocky slope of the hills Kis-Szoplák and Nagy-Szoplák Mercuriali-Tilietum can be seen on this area. On the upper part of both peaks the forests are degraded, damaged by the gnawing, treading, grubbing of wild animals. The soil is very shallow and full of bare rocks. When planning the silviculture of the stands on rocky slopes or on the upper part of the peak priority should be given to soil conservation standpoints. On these areas cautious thinning is recommended because of the increased danger of soil erosion. The northern and northwestern slopes of Nagy-Szoplák hill are surrounded by Melitti-Fagetum hungaricum and Querco petraeae-Carpinetum pannonicum associations. Mercurialis perennis dominates in the herb layer, which also indicates relatively shallow and rocky soil. This is why soil conservation respects have to be taken into consideration as well. At the other parts of the forest where the soil is deeper Mercurialis is replaced by Asperula odorata. In the surroundings of the hill Kis-Szoplák the above mentioned MelittiFagetum hungaricum stand is continuous with that of in forest ranges 5 and 6. In forest ranges 3 and 4 young Melitti-Fagetum and Querco petraeae-Carpinetum grows mixed with Pinus sylvestris and Picea abies trees. Orchis pallens is the floristical value of range 5. Surroundings of Nagy-Bodzás-hegy Ranges 7-8,12,18: The vegetation of the hill Nagy-Bodzás-hegy is similar to that of the hills Nagy-Szoplák and Kis-Szoplák, that is Mercuriali-Tilietum on the top around the eminence. According to the characteristics of the surface Mercuriali-Tilietum forest is replaced by beech forests. Four of the characteristic herb layer dominants of beech forests: Mercurialis perennis, Asperula odorata, Carex pilosa or Melica uniflora were observed, indicating habitat heterogeneity (SZŐCS 1971) (Pilisszentkereszt ranges 7, 8, 18A and 12). In range 8 on the side of the hill Nagy-Bodzás-hegy facing the valley Vaskapu-völgy a drier, Melica uniflora-type oak forest can be found. Vaskapu-völgy and surroundings of Vaskapu-hegy Ranges 10-11, 14-15: In the valley Vaskapu-völgy (10 and LIB) Mercuriali-Tilietum forest extends. North to the valley Vaskapu-völgy a young beech forest mixed with conifers (Pinus nigra, Pinus sylvestris, Picea abies) is present.