A six year study of a secondary succession after deforestation in North Hungary

Succession in a herbaceous vegetation developed on a site formerly occupied by aQuercetum petraeae-cerris forest is described and discussed. The deforestation took place in 1979. In the clearing 15 sample plots of 1 m² were established in three strata. Every year the floristic composition and the cover of each species was determined in permanent quadrats. For calculation of diversity values based on relative cover the formula given byHill (1973) was used.