Study of the impact of human activity on the geomorphological processes of the cow trench in Gesäuse National Park using UAV data

This paper deals with the recording of human activity and the change of a highly process-influenced area. The Kühgraben in the Gesäuse National Park in Styria, Austria, was chosen as a trench with episodic water flow and a high relief energy with associated high Morphodynamics. Data acquisition was carried out by UAV and aerial images were processed from four out of five taken flights using the SfM method. This thesis deals with the recording of human activity and the change of a highly influenced area. As an area, the cow trench in the Gesäuse National Park in Styria, Austria was chosen as a trench with episodic water flow and a high relief energy with associated high morphodynamics. Based on the results, it can be noted that the structural and engineering biological measures had and still have a significant impact on the processes of the cow trench. In addition, UAV data is very well suited to the analysis of altitude changes. In combination with the analysis of historical aerial images with lower geometric resolution and longer time intervals, only larger change data can be determined.本论文围绕人类活动记录与受过程扰动强烈区域的变化展开研究。研究选取奥地利施蒂利亚州盖瑟国家公园（Gesäuse National Park）内的库赫格拉本水道（Kühgraben）作为研究对象，该水道兼具间歇性水流特征与高地形能量，伴随强烈的地貌动力学（Morphodynamics）过程。数据采集通过无人机（Unmanned Aerial Vehicle, UAV）完成，并采用结构从运动（Structure from Motion, SfM）方法对5次飞行任务中获取的4组航空影像进行处理。 本学位论文聚焦人类活动记录与受强烈扰动区域的变化。研究选取奥地利施蒂利亚州盖瑟国家公园内的库赫格拉本水道作为研究对象，该水道具备间歇性水流特征，地形能量充沛且伴随强烈的地貌动力学过程。基于研究结果可知，结构工程与生态工程措施此前及当前均对库赫格拉本水道的地貌过程产生了显著影响。此外，无人机数据非常适用于高程变化分析。若结合几何分辨率较低、时间跨度更长的历史航空影像开展分析，则仅能识别出较大尺度的变化数据。