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A new concept for estimating the influence of vegetation on throughfall kinetic energy using aerial laser scanning [in press]

Senn, Johannes Antenor; Fassnacht, Fabian Ewald; Eichel, Jana; Seitz, Steffen; Schmidtlein, Sebastian

Abstract:
Soil loss caused by erosion has enormous economic and social impacts. Splash effects of rainfall are an important driver of erosion processes; however, effects of vegetation on splash erosion are still not fully understood. Splash erosion processes under vegetation are investigated by means of throughfall kinetic energy (TKE). Previous studies on TKE utilized a heterogeneous set of plant and canopy parameters to assess vegetation’s influence on erosion by rain splash but remained on individual plant- or plotlevels. In the present study we developed a method for the area-wide estimation of the influence of vegetation on TKE using remote sensing methods. In a literature review we identified key vegetation variables influencing splash erosion and developed a conceptual model to describe the interaction of vegetation and raindrops. Our model considers both amplifying and protecting effect of vegetation layers according to their height above the ground and aggregates them into a new indicator: the Vegetation Splash Factor (VSF). It is based on the proportional contribution of drips per layer, which can be calculated via the vegetation cover profile from airborne LiDAR datasets. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000117486
Veröffentlicht am 02.03.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Geographie und Geoökologie (IFGG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0197-9337, 1096-9837
KITopen-ID: 1000117486
Erschienen in Earth surface processes and landforms
Seiten esp.4820
Vorab online veröffentlicht am 22.01.2020
Schlagwörter splash erosion, throughfall kinetic energy, remote sensing, LiDAR, Vegetation Splash Factor
Nachgewiesen in Web of Science
Scopus
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