A conceptual-model-based sediment connectivity assessment for patchy agricultural catchments

Abstract × 2) of the Swiss Plateau. We used a global sensitivity analysis to explore model structural assumptions about how linear landscape features (dis) connect the sediment cascade, which allowed us to investigate the uncertainty in the model structure. Furthermore, we compared model simulations of hillslope sediment yields from five subcatchments to tributary sediment loads, which were calculated with long-term water discharge and suspended sediment measurements. The sensitivity analysis revealed that the assumptions about how the road network (dis) connects the sediment transfer from field blocks to water courses had a much higher impact on modelled sediment yields than the uncertainty in model parameters. Moreover, model simulations showed a higher agreement with tributary sediment loads when the road network was assumed to directly connect sediments from hillslopes to water courses. Our results ultimately illustrate how a high-density road network combined with an effective drainage system increases sediment connectivity from hillslopes to surface waters in agricultural landscapes. This further highlights the importance of considering linear landscape features and model structural uncertainty in soil erosion and sediment connectivity research.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: A conceptual-model-based sediment connectivity assessment for patchy agricultural catchments ; volume:26 ; number:14 ; year:2022 ; pages:3753-3770 ; extent:18 ; Hydrology and earth system sciences ; 26, Heft 14 (2022), 3753-3770 (gesamt 18)

Beteiligte, Orts- und Zeitangaben

• Urheber: Batista, Pedro ; Fiener, Peter ; Scheper, Simon ; Alewell, Christine

Weitere Informationen

• DOI: 10.5194/hess-26-3753-2022
• URN: urn:nbn:de:101:1-2022072105245169382420
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:34 MESZ