Description: Das Projekt "WLS Report 35: Determination of natural space risk in the catchment areas of the Kreisbach and Schwemmbach, hydrologic analysis and rainfall simulation" wird vom Umweltbundesamt gefördert und von Universität für Bodenkultur Wien, Institut für Alpine Naturgefahren durchgeführt. The sites that were to become experimental areas were selected by coworkers of the Special Research Project Forest Ecosystem Restoration (SRP), as they allowed for a comparison of pairs of pure spruce stands and natural mixed stands. The selection of such sites was limited to the northern Alpine piedmont at the altidude between 400 and 800 metres above sea level. The experimental site Kreisbach in Lower Austria (municipality of Wilhelmsburg, district Lilienfeld) as well as the experimental site Schwemmbach in Upper Austria (municiplaity of St. Johann am Walde, district Braunau am Inn) were selected to become the areas of investigation. It is the aim of this study to evaluate the effects of forest ecosystem restoration on the discharge of floods. It could be stated that ideal discharge conditions prevail on all forest stands examined. There could not be found any significant difference between the different stand types. In part, this may be well explained by the high site quality classes on the examined grounds. The pure spruce stands lacked high raw humus horizons, which are responsible for the hydrophobe behavior. Despite contrary notes in the literature (AULITZKY 1989) on the flysch sites extremely low surface runoff coiffizients were determined. This may be due to the fact that the damming layers lie too deep to cause the emergence of strong surface discharge in the forests.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Niederösterreich ? Oberösterreich ? Wien ? Wiederherstellung von Ökosystemen ? Abfallbehandlung ? Hochwasserabfluss ? Humus ? Brunnen ? Oberflächenabfluss ? Abfluss ? Kommune ? Stadtteil ? Waldökosystem ? Wirkung ? Bestockung ? Inn ? Rechtsverfahren ? Einzugsgebiet ? Meeresspiegel ? Mischwald ? Risikoanalyse ? Standortwahl ? Studie ? Hochgebirge ? Naturraum ? Verbreitungsgebiet ? Wirkung ? Naturgefahr ? Forschungsprojekt ? Niederschlag ? Forschung ? Wald ? Sanierung ? Vergleich ? Ökosystem ? Bericht ? Baumbestand, Fichte ? Projekt ? Schicht ? Teil ? Verhältnis ? ausgewählt ? besonder ? eingeschränkt ? Auslese ? nördlich ? stark ? Literatur ? Oberfläche ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1999-11-24 - 2001-12-31
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