University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Sebastian Tschann
(2016):
Waldbauliche Analyse der Naturwaldreservate Goppaschrofen, Finstere Schrofa und Ziegerberg im Saminatal/Vorarlberg.
Master / Diploma Thesis - Institut für Waldbau (WALDBAU),
BOKU-Universität für Bodenkultur,
pp 118.
UB BOKU
obvsg
- Abstract:
- This paper characterizes the natural forest reserves Goppaschrofen, Finstere Schrofen and Ziegerberg in the Samina valley (Vorarlberg). The data investigation was done in all three reserves on 36 sample points focusing on stand structure, tree species distribution, natural regeneration, vegetation and dead wood. A reinvestigation of 16 angle-count sample points, taken in the year 1999 allowed an assessment of the stand development of two forest associations. For the analysis the mixed forest (Adenostylo glabrae-Fagetum) of Norway Spruce (Picea abies), European Beech (Fagus sylvatica) and Silver Fir (Abies alba) and the mountain pine (Pinus uncinata) forests (Erico-Pinetum uncinatae) were stratified. The mixed forest has a growing stock of 455 ±287m³/ha and 544 ±408 trees per hectare as well as an amount of dead wood of 87 ±77m³/ha. The larger part of the mixed forest is in the optimal and terminal phase, indicated in the stand development during the last 15 years. The share of silver fir is decreasing from the top tree layer to the middle and third class, whereas the share of spruce and beech is increasing. The present amount of natural regeneration is sufficient enough to allow a future development of the forest reserve, but considering a shift of the share of tree species due to the lack of silver fir. In the forest reserve Ziegerberg the growing stock is around 171 ±87m³/ha with 957 ±477 trees per Hectare, and the mountain pine is the dominating species. The amount of dead wood is about 47 ±35m³/ha. The long term development of the mountain pine forests has to be questioned because of absence of the natural regeneration of mountain pine. It is assumed that mountain pine might be replaced by Norway Spruce in future. The role of the heavy browsing pressure in the area shouldn´t be underestimated for the natural development of the forest reserves.
- Beurteilende(r): Vacik Harald