Structure and development of autochthonous beech stands in the Krkonoše Mts.

This thesis deals with structure and natural regeneration of acidophylic mountain beech forest stand in the western part of the Giant Mountains. Within the measurement of data for my thesis, I established four new permanent research plots in western part of Giant Mountains at LHC Harrachov, specifically it were plots: Dvoračky 1, Dvoračky 2, Dvoračky 3 and Dvoračky 4. Each of these permanent research plots was with dimensions 50 × 50 m (2500 m2). On each plot I measured all individuals with the diameter breast-height d1,3>12cm. For each individual were measured diameter breast-height, hight, hight of crown baze, crown projection and I numbered the trees. For each of the individuals I also measured coordinates X and Y (X along to fall line, Y on the contour line) to record their layout on the plot. Afterwards I marked out a transect with dimensions 5 × 50 m (250 m2) on the plot, in which I recorded all present viable individuals with the diameter breast-height up to 12 cm. I found out their coordinates X and Y, height and the width of the crown. For evaluation of the height-structure I divided the nature regeneration into the height classes. I also conducted on the permanent research plots pedologic and dednrochronological research. Within pedological research in each plot I dug soil pits and took samples from all soil horizons. The measured data were subsequently processed by the help of mathematical-statistical methods and pedological samples were analyzed in the laboratory of the research institute