im PublikationsserverTitelangaben
Knoflach, Bettina ; Ramskogler, Katharina ; Talluto, Matthew ; Hofmeister, Florentin ; Haas, Florian
; Heckmann, Tobias ; Pfeiffer, Madlene ; Piermattei, Livia ; Ressl, Camillo ; Wimmer, Michael ; Geitner, Clemens ; Erschbamer, Greta ; Stötter, Johann:
Modelling of Vegetation Dynamics from Satellite Time Series to Determine Proglacial Primary Succession in the Course of Global Warming—A Case Study in the Upper Martell Valley (Eastern Italian Alps).
In: Remote sensing. 13 (2021) 21: 4450.
- 24 S.
ISSN 2072-4292
Volltext
|
Link zum Volltext (externe URL): https://doi.org/10.3390/rs13214450 |
Kurzfassung/Abstract
Satellite-based long-term observations of vegetation cover development in combination with recent in-situ observations provide a basis to better understand the spatio-temporal changes of vegetation patterns, their sensitivity to climate drivers and thus climatic impact on proglacial landscape development. In this study we combined field investigations in the glacier forelands of Fürkele-, Zufall- and Langenferner (Ortles-Cevedale group/Eastern Italian Alps) with four different Vegetation Indices (VI) from Landsat scenes in order to test the suitability for modelling an area-wide vegetation cover map by using a Bayesian beta regression model (RStan). Since the model with the Normalized Difference Vegetation Index (NDVI) as predictor showed the best results, it was used to calculate a vegetation cover time series (1986–2019). The alteration of the proglacial areas since the end of the Little Ice Age (LIA) was analyzed from digital elevation models based on Airborne Laser Scanning (ALS) data and areal images, orthophotos, historical maps and field mapping campaigns. Our results show that a massive glacier retreat with an area loss of 8.1 km2 (56.9%; LIA–2019) resulted in a constant enlargement of the glacier forelands, which has a statistically significant impact on the degree of vegetation cover. The area covered by vegetation increased from 0.25 km2 (5.6%) in 1986 to 0.90 km2 (11.2%) in 2019 with a significant acceleration of the mean annual changing rate. As patterns of both densification processes and plant colonization at higher elevations can be reflected by the model results, we consider in-situ observations combined with NDVI time series to be powerful tools for monitoring vegetation cover changes in alpine proglacial areas.
Forschungsprojekte
Research Unit SEHAG - Sensitivity of high Alpine geosystems to climate change since 1850 (SEHAG)
Weitere Angaben
| Publikationsform: | Artikel |
|---|---|
| Sprache des Eintrags: | Englisch |
| Institutionen der Universität: | Mathematisch-Geographische Fakultät > Geographie > Lehrstuhl für Physische Geographie |
| DOI / URN / ID: | 10.3390/rs13214450 |
| Open Access: Freie Zugänglichkeit des Volltexts?: | Ja |
| Peer-Review-Journal: | Ja |
| Verlag: | MDPI |
| Die Zeitschrift ist nachgewiesen in: | |
| Titel an der KU entstanden: | Ja |
| KU.edoc-ID: | 28703 |
Letzte Änderung: 10. Nov 2021 11:09
URL zu dieser Anzeige: https://edoc.ku.de/id/eprint/28703/
