Mozliwosc zrownowazenia struktury uzytkowania gruntow w Kotlinie Kurpiowskiej z uwzglednieniem korekty granicy rolno-lesnej

The development of agricultural production at the territory of Kurpiowska Valley has imparted a significant effect on evolution of the structure of land management, being expressed by expansion of cultivated areas through cutting out of forests and drainage of valley swampy territories. It brought about the disturbance of ecological equilibrium in this area, expressed by shrinkage of forest and bog areas, lowering the level of ground waters, decrease of water-retaining capacity of the area and by over-drying of grassland edges and near-forest fragments of arable land. The conducted studies have revealed that there is a possibility to recover ecological equilibrium in the structure of land management within the Kurpiowska Valley through seeding of low-fertile sandy soils, excluding the soils predestined to ploughing, from meadow-pastural utilization and the preference for cattle breeding in shallow cow sheds.