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Open Source Riverscapes : Analyzing the Corridor of the Naryn River in Kyrgyzstan Based on Open Access Data

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Betz, Florian ; Lauermann, Magdalena ; Cyffka, Bernd:
Open Source Riverscapes : Analyzing the Corridor of the Naryn River in Kyrgyzstan Based on Open Access Data.
In: Remote sensing. 12 (2020) 16.
ISSN 2072-4292

Volltext

Link zum Volltext (externe URL): https://doi.org/10.3390/rs12162533

Kurzfassung/Abstract

In fluvial geomorphology as well as in freshwater ecology, rivers are commonly seen as nested hierarchical systems functioning over a range of spatial and temporal scales. Thus, for a comprehensive assessment, information on various scales is required. Over the past decade, remote sensing-based approaches have become increasingly popular in river science to increase the spatial scale of analysis. However, data-scarce areas have been widely ignored so far, even if most remaining free flowing rivers are located in such areas. In this study, we suggest an approach for river corridor mapping based on open access data only, in order to foster large-scale analysis of river systems in data-scarce areas. We take the more than 600 km long Naryn River in Kyrgyzstan as an example, and demonstrate the potential of the SRTM-1 elevation model and Landsat OLI imagery in the automated mapping of various riverscape parameters, like the riparian zone extent, distribution of riparian vegetation, active channel width and confinement, as well as stream power. For each parameter, a rigor validation is performed to evaluate the performance of the applied datasets. The results demonstrate that our approach to riverscape mapping is capable of providing sufficiently accurate results for reach-averaged parameters, and is thus well-suited to large-scale river corridor assessment in data-scarce regions. Rather than an ultimate solution, we see this remote sensing approach as part of a multi-scale analysis framework with more detailed investigation in selected study reaches.

Weitere Angaben

Publikationsform:Artikel
Schlagwörter:riverscape; riparian zone; river management; remote sensing; open access data; Naryn River; Central Asia
Themenfelder:Nachhaltigkeit
Institutionen der Universität:Mathematisch-Geographische Fakultät > Geographie > Professur für Angewandte Physische Geographie und KU-Forschungsstelle Aueninstitut Neuburg
DOI / URN / ID:10.3390/rs12162533
Open Access: Freie Zugänglichkeit des Volltexts?:Ja
Peer-Review-Journal:Ja
Titel an der KU entstanden:Ja
Eingestellt am:11. Aug 2020 12:14
Letzte Änderung:10. Sep 2020 08:08
URL zu dieser Anzeige:http://edoc.ku-eichstaett.de/24818/