Fossil peat of 2,2 m thickness from the Upperdnister plane have been investigated palynologicaly. Pollen grains of 107 taxons were identified and the diagram     was ploted. It shows that zones of deforestation correlate with the presence of considerable quantity of ruderals plants and weeds as well as pollens of cereals. It gives possibility to conclude that human influence on vegetation history during the late Holocene was significant.