Description: Das Projekt "The influence of Biomass and its change on landSLIDE activity (BioSLIDE)" wird/wurde ausgeführt durch: Technische Universität Wien, Department für Geodäsie und Geoinformation (E120).Landslides occur in many hilly and mountainous regions all over the world. These potentially damaging phenomena are caused by multiple interacting natural and anthropogenic factors. Human induced land cover changes (e.g. deforestation) are known to have a large influence on landslide activity. In contrast to climatic, geological and topographical factors, forest stands can be managed directly by humans. Therefore we suggest that in order to draw up appropriate avoidance strategies, it is crucial to investigate the interdependent processes that define stability under forested and nonforested conditions. Newly developed physically based modelling methods exist to simulate such effects. However, the reliability of the modelling results is usually hampered by the availability of reliable input data. This project strives to counter this much discussed weakness of physically based modelling approaches. The main objective of this research is to simulate and quantify the effects of forest related biomass and biomass changes on slope stability at regional scale ( 15km2). The innovative approach will be developed and tested for a study area located in the federal state of Vorarlberg, where landsliding represents a prevalent geomorphic phenomenon and high resolution multi temporal ALS (airborne laser scanning) data exist. Based on 3D ALS point cloud data from the years 2004, 2011 and 2015 multiple biomass parameters (e.g. biomass, vertical layer structure, crown volume) will be derived. An in-situ assessment of vegetation related information (e.g. root distribution) will be conducted in order to enable an empirical linking between the ALS derived information and additional relevant parameters (e.g. tree allometry). The effect of biomass- and climatic changes on slope stability will be simulated using a sophisticated physically based hydro-mechanical model, which enables to implement geomechanical (e.g. root cohesion, bulk unit weight) and hydrological (e.g. interception, evapotranspiration) effects to simulate slope stability in time. The proposed innovative combination of vegetational parameters derived from ALS data with a physically based slope stability model is expected to allow a better understanding of geomorphic interdependencies at this scale. Furthermore, this interdisciplinary approach is expected to generate synergies between scientific fields, which will lead to an improved spatio-temporal prediction of the effects of human activity and environmental changes on landslide activity.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Entwaldung ? Bundesländer Deutschlands ? Synergistische Wirkung ? Vegetation ? Blei ? Vorarlberg ? Evapotranspiration ? Holzeinschlag ? Laser ? Bodenkunde ? Landnutzungsänderung ? Geotechnik ? Topographie ? Prognose ? Interzeption ? Georeferenzierung ? Naturereignis ? Bodenschutz ? Daten ? Studie ? Wirkungsforschung ? Erdrutsch ? Modellierung ? Landbedeckung ? Klimawandel ? Anthropogener Einfluss ? Hydrologie ? Wald ? in situ ? Informationsgewinnung ? Gebirge ? Klima ? Datenerhebung ? Aufbereitungstechnik ? Biomasse ? Umweltveränderung ? Flugzeuggetragenes Laser Scanning ? Wechselwirkung ? Airborne Laser Scanning ? Naturgefahren und Naturrisiken ?
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2015-05-01 - 2018-04-30
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