Hodnocení stavu obnovy na kalamitní holině v oblasti východních Čech

The thesis is focused on the evaluation of natural regeneration in a calamity clearcut in the eastern Bohemia. The area of about 5 hectares arose as a result of a wind disaster in 2005. The initial forest cover consisted of full - grown trees mainly represented by spruce. Nowodays, the stand composition is dominated by softwood deciduous trees, a type of pioneer species, mainly represented by the birch. The main research was carried out in years 2015 - 2016. For this purpose, a lasting research area of 125 m2 was created. It was divided into 20 separate parts. Another research was undertaken in tree circle areas of 100 m2. This thesis also includes evaluation of artificial regeneration of spruce. Natural regeneration was 8080 pcs/ha. The share of birch in the area is 70 % and it shows a great extent of recovery process and further growth. Birch is the essential component of the upper stand. The spruce, as a target tree species, represented only 24 % share in the area, with the occurrence only in sub-level stands and with rather irregular psacing. However, spruce is the only tree species which showed some slight increase in growth