We have analyzed status of selected forest phytocenosis (GFT Lariceto-Piceetum) following large-scale forest disturbnaces and impact of key meteorological factors such as soil temperature (°C) and soil moisture (%). Bioindication characteristics is also analyzed through selected environmental factors - light and temperature (according to ELLENBERG 1992). Soil respiration (μmol CO2 m-2 s-1) reflects the status of phytocenosis, so we used closed chamber gasometric system (PP Systems, USA). The phytocenosis were studied on permanent plots (VP) which were established and analyzed on vertical gradients (1100 m a.s.l, 1200 m a.s.l., 1400 m a.s.l.) as well as different type of forest – a) forest unaffected by the windthrow, but intensively damaged by bark beetles (S); b) unaffected mature spruce forest (Z). Results confirmed that implications of large-scale forest disturbance significantly affected the composition, structure, and density of vegetation (each VP S). We recorded about 30.76 % higher species richness at the locality VP 1100 S compared to the locality VP 1100 Z. Slightly higher values of species richness (33.33 %) was found between localities VP 1200 S and VP 1200 Z. Research plots situated on the 1400 m a.s.l. were very similar in species composition - minimum difference was observed. The results of basic statistical analyses (DCA with Monte Carlo permutation tests) indicated that species composition influences the soil respiration significantly (64.9 % from total variability, p < 0.05). On the other hand, we found close correlation between soil temperature and light (without significant influence). The analyzes of environmental factors (light and temperature) show difference (difference between values > 0.5) in phytocenosis on 1200 m a.s.l. At this locality we recorded the highest and statistically significant values (Fisherov LSD test, p < 0.001) of soil respiration compared to other phytocenosis. Phenological observations were done during the whole growing season. On the basis of the dates of plant flowering we created the curves of flowering. Curves represent inner biological characteristics of plants very appropriate and also reflect the impact of climatic factors very sensitively.