EXAMINATION OF SOIL-PLANT INTERRELATIONS ON PASTURES OF THE GREAT HUNGARIAN PLAIN

Coenological releves were prepared by authors on different pastures (grazed by horse, cattle or sheep) of the Great Hungarian Plain in 1997 and 2005. Two groups of coenological releves were prepared in 1997 and 2005 on sandy, alkali areas near Hodmezovasarhely town. Based on data gained during the two periods, vegetation changes caused by animal husbandry can be compared. During coenological studies, monitoring of spatial changes has also played an important role, this is why data were gained from two groups of releves. Besides observing the effects of grazing on vegetation, we have also concentrated on how to strain of effects of trampling. Intensity of grazing has changed on the areas observed in 1997, as slightly and intensively grazed or overgrazed areas were separated.