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Open AccessArticle

Modeling Runoff-Formation and Soil Erosion after Pumice Excavation at Forested Andosol-Sites in SW-Germany Using WEPP

Department of Geography, Campus Koblenz, Institute for Integrated Natural Sciences, University Koblenz-Landau, 56070 Koblenz, Germany
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Soil Syst. 2019, 3(3), 48; https://doi.org/10.3390/soilsystems3030048
Received: 7 June 2019 / Revised: 22 July 2019 / Accepted: 29 July 2019 / Published: 31 July 2019
(This article belongs to the Special Issue Soil Erosion and Land Degradation)
This study investigates the effects of pumice excavation on runoff formation and soil erosion processes in a forested catchment in SW-Germany. The underlying questions are, if (a) backfilled soils have different properties concerning runoff generation and erodibility and if (b) clear-cutting prior to excavation triggers runoff and erosion. Four adjacent sub-areas were observed, which represented different pre- and post-excavation-stages. The basis of the investigation was a comprehensive field sampling that delivered the data for physical erosion modeling using the Water Erosion Prediction Project (WEPP). Modeling took place for standardized conditions (uniform slope geometry and/or uniform land management) and for actual slope geometry and land management. The results show that backfilled soils exhibited 53% increase of annual runoff and 70% increase of annual soil loss under standardized conditions. Storm runoff was increased by 6%, while storm soil loss was reduced by 9%. Land management changes also triggered shifts in annual runoff and soil erosion: Clear-cut (+1.796% runoff, +4.205% soil loss) and bare (+5.958% runoff, +21.055% soil loss) surfaces showed the most distinct changes when compared to undisturbed forest. While reforestation largely diminished post-excavation runoff and soil erosion, the standardized results statistically prove that soil erodibility and runoff generation remain increased after backfilling. View Full-Text
Keywords: soil erodibility; Andosol; WEPP; runoff formation; soil hydrology; Germany; soil erosion; reforestation; clear-cutting soil erodibility; Andosol; WEPP; runoff formation; soil hydrology; Germany; soil erosion; reforestation; clear-cutting
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MDPI and ACS Style

Zemke, J.J.; Pöhler, J.; Stegmann, S. Modeling Runoff-Formation and Soil Erosion after Pumice Excavation at Forested Andosol-Sites in SW-Germany Using WEPP. Soil Syst. 2019, 3, 48. https://doi.org/10.3390/soilsystems3030048

AMA Style

Zemke JJ, Pöhler J, Stegmann S. Modeling Runoff-Formation and Soil Erosion after Pumice Excavation at Forested Andosol-Sites in SW-Germany Using WEPP. Soil Systems. 2019; 3(3):48. https://doi.org/10.3390/soilsystems3030048

Chicago/Turabian Style

Zemke, Julian J.; Pöhler, Joshua; Stegmann, Stephan. 2019. "Modeling Runoff-Formation and Soil Erosion after Pumice Excavation at Forested Andosol-Sites in SW-Germany Using WEPP" Soil Syst. 3, no. 3: 48. https://doi.org/10.3390/soilsystems3030048

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