Varying particle size selectivity of soil erosion along a cultivated catena

Autor: Szabó Judit Alexandra, Keller Boglárka, Centeri Csaba, Hatvani István Gábor, Kovács József, Szalai Zoltán, Jakab Gergely
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Open Geosciences, Vol 15, Iss 1, Pp 667-78 (2023)
Druh dokumentu: article
ISSN: 2391-5447
DOI: 10.1515/geo-2022-0585
Popis: Sheet erosion is a complex multi-factor-dependent process with high spatial heterogeneity on hillslopes. Although the individual factors have been well studied, their aggregated effect on size-selective erosional processes is highly uncertain. Therefore, this study concentrates on the aggregate size distribution and effective particle size distribution (PSD) of the aggregates in the soil loss, collected from different simulated hillslope positions and surface conditions. These simulated hillslope positions combine moisture content from the extremely dry to the saturated with related slope positions of 2, 5, and 12% steepness and different surface roughness (tilled and crusted surfaces) modelled in a laboratory rainfall simulator. Using hierarchical cluster analysis, the PSD of the aggregates was separated into three groups based on the differences in the 59–116 µm range of the PSD histograms, namely, macro-aggregates, 50–250 µm sized micro-aggregates, and
Databáze: Directory of Open Access Journals