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• Összehasonlító botanikai és természetvédelmi vizsgálatok telepített és felújított gyepekben a Csákvár melletti Páskom területén

  63-73

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  39

  We studied the vegetation of a 260 ha gray cattle pasture near Páskom, which can be found in Zámoly basin. We carried out our surveyes in May 2012. The pasture can be divided into five parts. One part, approximately the half of the area (150.83 ha), is an oldfield grassland, which was overseeded 20 years ago. The other half of the pasture was restored (109.17 ha) in 4 different ways in 2009 and then was mowed until 2011. 7 relevés were made in each part of the pasture (the occurence of species and their cover scores were recorded). The aim of our study was to compare the effects of the different restoration methods and mowing on the botanical composition of the pasture. The results showed, that the grassland restored with hay transfer method was the most similar to the natural conditions. The greatest number of species was recorded in that part and the species of natural grasslands become dominant. The directly sowed and the spontaneous grassland parts separated chiefly from the semi-natural 30-year-old grassland. 

• Természetvédelmi élőhelykezelés hatása a gyöngyösi Sár-hegy gyepterületeinek vegetációjára

  39-48

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  61

  We studied the vegetation of grasslands on the Sár Mountain, in Gyöngyös. The areas are mowed regularly by the Bükk National Park and mechanical shrub control was done as well. The effects of these habitat management techniques were investigated on grasslands of different degradation levels. Coenological studies were made between May and June in 2013 with 2×2 m relevés. The study areas were characterised according to nature conservation value categories and life forms. Our results showed that the above mentioned management techniques had positive effects on the diversity of grasslands. On the managed grasslands the abundance of woody species decreased, while the abundance of annual and perennial grass species and dicotyledonous herbaceous species increased. The highest species number (58-78) was recorded in the case of control areas. The number of species was high (47-49) in the areas managed by mowing and mechanical shrub control. The lowest species number (43) was recorded in the areas which were not mowed after mechanical shrub control. According to the nature conservation value categories the number of protected species was the highest in the control areas. Our results approved that regular mowing is needed after mechanical shrub control to sustain the diversity of abandoned grasslands in the long run.