Anita Zore (Author), Nejc Bezak (Author), Mojca Šraj (Author)

Abstract

Healthy soils are one of the key priorities of the EU Soil Strategy, and soil erosion can present a threat to soils around the world. Rainfall erosivity is the main driver of soil erosion by water. Rainfall interception by vege- tation can reduce the erosive power of raindrops, and consequently measures involving vegetation can mitigate soil erosion losses. In this study, the effect of rainfall interception on the erosive power of raindrops under the birch tree in an urban park in the city of Ljubljana is investigated. More than one year of measurements of drop- size distribution using two optical disdrometers placed above and below the birch tree canopy were used to investigate the impact of rainfall interception on the erosive power of raindrops. The number of drops, fall velocity, and drop diameter were, on average smaller below the canopy in comparison to the measurements above the canopy for 20%, 7% and 27%, respectively. This also resulted in a reduction in the rainfall kinetic energy (3% and 30% in the leafless and leafed periods, respectively) and rainfall erosivity (21% and 50% for the leafless and leafed periods, respectively). The results demonstrate that rainfall interception has a significant seasonal influence on the erosive power of raindrops. Therefore, vegetation characteristics should be considered as time-varying rather than constant parameters in soil erosion modelling studies.

Keywords

prestrezanje padavin;prepuščene padavine;porazdelitev velikosti kapljic;erozivnost padavin;rainfall interception;throughfall;drop-size distribution (DSD);rainfall erosivity;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
UDC: 556.1
COBISS: 123536131 Link will open in a new window
ISSN: 0022-1694
Views: 111
Downloads: 16
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Other data

Secondary language: Slovenian
Secondary title: Vpliv prestrezanja padavin na erozivnost kapljic pod brezo
Secondary keywords: prestrezanje padavin;prepuščene padavine;porazdelitev velikosti kapljic;erozivnost padavin;
Type (COBISS): Article
Pages: 13 str.
Volume: ǂVol. ǂ613
Issue: ǂiss. ǂpart B, art. 128478
Chronology: okt. 2022
DOI: 10.1016/j.jhydrol.2022.128478
ID: 17042969