The author discusses landscape changes over the past 60 years in a small catchment basin of the Ropianka stream, in the south-eastern part of the Beskid Niski (Low Beskid) Mountains, in Polish Carpathians. For the chosen historical periods he reconstructs a dominating pattern of landscape, the extent of forest areas as compared with areas under cultivation, and the height of crop boundary. The author also presents relationships between historical events, mans activities and his interference with the natural environment, the rate of which affects changes in the catchment landscape. At the same time the author shows these changes in space, explains the causes, and separates stages in which the changes took place. An analysis displays diametrical transformations that had taken place in the relevant area over 1938-1998. By 1938 the landscape of the catchment was dominated by arable land (nearly 85% of the surface). At that time the upper limit of crops was reaching as high as 590 m a.s.l. in the northern part of the area. Since 1947 the former agricultural areas were included in the process of natural plant succession, which strengthened by planting actions caused the lowering of the crop boundary to 490 m a.s.l. at the beginning of the 1980s and the domination of forest areas (over 60%) in the landscape. Over 1980-1998 a decreasing tendency was marked in the surface of forest area (below 60%), chiefly in favour of meadows, pastures and parklands used for cattle grazing (40% of the area).