Structure and origin of mountain Norway spruce in the Bohemian Forest
2011
Cada, V., Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Pestovani Lesu | Svoboda, M., Ceska Zemedelska Univ., Prague (Czech Republic). Katedra Pestovani Lesu
This paper compares the present break-up of mountain spruce stands in the Bohemian Forest (in the Sumava Protected Landscape Area, Czech Republic) with conditions during their initiation using dendrochronological techniques. On three selected localities we established two study plots within relatively old stands of unknown origin. Stands were recently broken up by a windstorm. The present situation was described by diameter and decay class distribution. To describe the situation at the stand initiation, we cored at least 40 stems on each plot to get the age structure and growth series of trees. Disturbances were marked by discovering synchronous releases on tree-ring series. Main population waves were initiated in association with severe disturbances during a relatively short period, leading to the establishment of relatively even-aged, homogeneously looking stands. The disturbances were synchronized between plots and accounted for by historically known windstorms or bark beetle outbreaks; notwithstanding, logging as a disturbance factor is also particularly possible.
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