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Gewählte Publikation:

Hohensinner, S; Atzler, U; Berger, M; Bozzetta, T; Hoberth, C; Kofler, M; Rapottnig, L; Sterle, Y; Haidvogl, G.
(2021): Land Use and Cover Change in the Industrial Era: A Spatial Analysis of Alpine River Catchments and Fluvial Corridors
FRONT ENV SCI-SWITZ. 2021; 9, 647247 FullText FullText_BOKU

Abstract:
Land uses affect flood risks in various ways. The comparative analysis of the historical and current land cover/uses helps to better understand changing flood regimes. Based on historical cadastre maps from 1826 to 1859, the land cover/uses in the Austrian catchments of the rivers Rhine, Salzach and Drava were reconstructed to almost the level of exact plots of land. Catchment-wide analysis reveals a six-fold expansion of settlement areas, a decline of arable land by 69% and a shrinking of the formerly glaciated areas by 73% until 2016. In the Alpine fluvial corridors, i.e. flood-prone areas at the valley floors and valley sides at ca. 300-year floods, settlements even expanded 7.5-fold, severely increasing the potential for flood damages. At the same time, the overall channel area of running waters has been reduced by 40% and 95% the formerly large wetlands have been lost. Overall, the fluvial corridors were truncated by 203 km(2) or 14%, thereby reducing flood retention capacity. The concentration of intensive forms of human land uses at lower altitudes, coupled with an upward shift of less intensively used, near-natural forms of land cover, has led to a both spatial and vertical separation of Alpine landscape features over the long term. Warmer temperatures due to climate change are expected to promote the demonstrated upward shifts of Alpine vegetation.
Autor*innen der BOKU Wien:
Berger Monika
Bozzetta Thomas
Haidvogl Gertrud
Hohensinner Severin
Rapottnig Leena
BOKU Gendermonitor:


Find related publications in this database (Keywords)
land cover change
land use
historical GIS
flood risk
Alpine rivers
altitudinal land use shift


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