Effects of plant roots on the soil erosion rate under simulated rainfall with high kinetic energy

Yoshinori Shinohara, Sohei Otani, Tetsuya Kubota, Kyoichi Otsuki, Kazuki Nanko

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study examined the effects of herbaceous plant roots on interrill erosion using two herbaceous species: clover (Trifolium repens) and oats (Avena sativa). We developed a simple rainfall simulator with relatively high normalized kinetic energy (KE; 23.2 J m−2 mm−1). Under simulated rainfall, we measured eroded soil for 42 boxes with various amounts of aboveground and belowground biomass. Aboveground vegetation had a significant effect on the soil erosion rate (SER). We found a clear negative relationship between the percent vegetation cover (c) and the SER. In contrast, plant roots showed no effects on the SER. The SER was not significantly different between the boxes with and without plant roots under similar c conditions. Thus, plant roots could have less of an effect on the SER under higher KE conditions. Editor M.C. Acreman Associate editor N. Verhoest

Original languageEnglish
Pages (from-to)2435-2442
Number of pages8
JournalHydrological Sciences Journal
Volume61
Issue number13
DOIs
Publication statusPublished - Oct 2 2016

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

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