EN
The present study discusses the characteristic of the land and aquatic-land plant communities occurring in the Narew river valley within the Narew Landscape Park borders. The phytosociological research carried out in 1988-1994. The floristic composition has been performed by Braun-Blanquet method and recorded in 257 releves. Phytocenosis of 38 plant communities and 8 plant associations (21 communities of Phragmitetea class, 3 communities of Scheuchzerio-Cariceteafuscae class, 8 communities and 6 plant associations of Molinio-Arrhenatheretea class, 6 forest and scrub communities as well as 2 communities and 2 plant associations of the other classes) were identified in studied area of the Narew Landscape Park. Predominant communities of wetland tall-sedges occupy about 32% of the area, reed rushes and others of Phragmition alliance - over 16%, grass and sedge-grass rushes - about 14%, forests and scrubs on hydrogenic soils - almost 15% (tab. 1). The approximate ranges of the particular groups of plant communities are presented on the map (fig. 1). The disadvantageous changes of vegetation in the certain areas of this part of the Narew river valley followed mainly because of changes in water condition in the valley as well as on the adjoining areas. They require renaturalization by increasing of habitat moisture. In spite of this, the Narew Landscape Park borders is one of the biggest and the best preserved of wetlands in Poland.