Forests are an indispensable component of human life and environment. Forests are the most important and the most wide-spread asset for human society. Man thus penetrated the original virgin forests, exploited them and, in most cases, damaged their original composition and quality because the targets of felling were mostly trees of the largest diameters and the best quality. As for as the conditions of Central Europe are concerned, practically, there are no forests untouched by man. Under the term "virgin forest" we mean that part of the natural forest which is most conserved. The important autochthones tree in Europe is the fir (Abies alba). The fir naturally occurs in the mixed beech and spruce forests. The present area of the fir is very limited. The most significant area of fir occurrence in Europe is the region of eastern Europe. The report summarizes the change in the species composition of east European forests, or virgin forests where fir is present. At present, the influence of immissions and game is the most significant factor that octs on and negatively influences the stability of the fir. Due to this fact, browsing intensity should be one of the most important factors for annual harvest plan of the red deer. The harmonization of nature conservation and wildlife management practicies is urgently needed.