Soil erosion analysis in a small forested catchment supported by ArcGIS Model Builder

verfasst von

Péter Csáfordi, Andrea Podör, Jan Bug, Zoltán Gribovszki

Abstract

To implement the analysis of soil erosion with the USLE in a GIS environment, a new workflow has been developed with the ArcGIS Model Builder. The aim of this four-part framework is to accelerate data processing and to ensure comparability of soil erosion risk maps. The first submodel generates the stream network with connected catchments, computes slope conditions and the LS factor in USLE based on the DEM. The second submodel integrates stream lines, roads, catchment boundaries, land cover, land use, and soil maps. This combined dataset is the basis for the preparation of other USLE-factors. The third submodel estimates soil loss, and creates zonal statistics of soil erosion. The fourth submodel classifies soil loss into categories enabling the comparison of modelled and observed soil erosion. The framework was applied in a small forested catchment in Hungary. Although there is significant deviation between the erosion of different land covers, the predicted specific soil loss does not increase above the tolerance limit in any area unit. The predicted surface soil erosion in forest subcompartments mostly depends on the slope conditions.

Organisationseinheit(en)

Institut für Physische Geographie und Landschaftsökologie
Arbeitsgruppe Physische Geographie

Externe Organisation(en)

Westungarische Universität

Typ

Artikel

Journal

Acta Silvatica et Lignaria Hungarica

Band

8

Seiten

39-56

Anzahl der Seiten

18

ISSN

1786-691X

Publikationsdatum

2012

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Forstwissenschaften

Ziele für nachhaltige Entwicklung

SDG 15 – Lebensraum Land

Elektronische Version(en)

https://doi.org/10.2478/v10303-012-0004-5 (Zugang: Offen)