This article presents the results of the study of the species composition of wood destroying fungi of Nemyriv district and bioecological features of their distribution. Were found 13 species of wood destroying fungi, which are spread on 10 species of tree species. The most common species of wood destroying fungi were the following: Fomes fomentarius (L.) Fr., Phellinus igniarius (L.) Quél., Trametes versicolor (L.), Lloyd, and Schizophyllum commune Fries. . These fungi occur at different stages of the destruction of wood. Species that are most susceptible to wooddestroying fungi have been identified as Quercus robur L., Carpinus betulus L., Fraxinus excelsior L., Tilia cordata. Wood destroying fungi plays a major role in the destruction of forest fallout and, as a consequence, of this process, the circulation of substances in nature. They clear the soil of numerous fallen leaves, pine needles, twigs, destroy tree stumps, dry, broken and wind-blown trunks, logs left in the forest at the site of felling
wood destroying mushrooms; forest ecosystems; wood