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A network theory approach for a better understanding of overland flow connectivity

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Masselink, Rens ; Heckmann, Tobias ; Temme, Arnaud ; Anders, Niels ; Gooren, Harm ; Keesstra, Saskia:
A network theory approach for a better understanding of overland flow connectivity.
In: Hydrological Processes. 31 (2017) 1. - S. 207-220.
ISSN 1099-1085

Volltext

Link zum Volltext (externe URL): https://doi.org/10.1002/hyp.10993

Kurzfassung/Abstract

Hydrological connectivity describes the physical coupling (linkages) of different elements within a landscape regarding (sub-) surface flows. A firm understanding of hydrological connectivity is important for catchment management applications, for e.g. habitat and species protection, and for flood resistance and resilience improvement. Thinking about (geomorphological) systems as networks can lead to new insights, which has also been recognised within the scientific community, seeing the recent increase in the use of network (graph) theory within the geosciences. Network theory supports the analysis and understanding of complex systems by providing data structures for modelling objects and their linkages, and a versatile toolbox to quantitatively appraise network structure and properties. The objective of this study was to characterise and quantify overland flow connectivity dynamics on hillslopes in a humid sub-Mediterranean environment by using a combination of high-resolution digital-terrain models, overland flow sensors and a network approach. Results showed that there are significant differences between overland flow connectivity on agricultural areas and semi-natural shrubs areas. Significant positive correlations between connectivity and precipitation characteristics were found. Significant negative correlations between connectivity and soil moisture were found, most likely due to soil water repellency and/or soil surface crusting. The combination of structural networks and dynamic networks for determining potential connectivity and actual connectivity proved a powerful tool for analysing overland flow connectivity.

Weitere Angaben

Publikationsform:Artikel
Zusätzliche Informationen:Die Publikation ist das Produkt einer Forschungszusammenarbeit mit der Universität Wageningen/Niederlande im Rahmen einer "Short term scientific mission" des Erstautoren an der KU Eichstätt-Ingolstadt. Diese erfolgte als Teil der COST-Action connecteur (http://connecteur.info), an der der Zweitautor und die letzte Autorin federführend beteiligt sind.
Institutionen der Universität:Mathematisch-Geographische Fakultät > Geographie > Lehrstuhl für Physische Geographie
DOI / URN / ID:10.1002/hyp.10993
Peer-Review-Journal:Ja
Titel an der KU entstanden:Ja
Eingestellt am:14. Sep 2016 11:35
Letzte Änderung:07. Feb 2019 15:35
URL zu dieser Anzeige:http://edoc.ku-eichstaett.de/18386/