The natural disturbances are a normal part of the forest ecosystems development; however they are considered an adverse phenomenon in forestry practice because they disrupt objectives of management. Repetitive natural disturbances caused mainly by wind and bark insects are considered to be the cause of the occurrence of the larch spruce community in the High Tatras. A higher proportion of naturally occurring so-called pioneer trees decreases with age of stands and in older developmental stages spruce and mixed by larch usually dominate. The lower competitiveness of larch is the reason that gradually natural stands are transformed into single-species communities. The stability of such stands is conditioned by higher structural diversity, where the vertical and especially the spatial diversity of trees is crucial. The aim of the bachelor's thesis is to design and on model plots verify a method of evaluating the current state of vegetation in areas affected by calamity by a combination of remote sensing and terrestrial evaluation.