Abstract
Infiltration rate affects slope stability by determining the rate of water transport to potential failure planes. This note considers the influences of vegetation (grass and willow) establishment a...
Highlights
CONCLUSIONS This study quantified the effects of roots
Root growth induced an increase in infiltration rate
Soil infiltration rate plays a key role in slope hydrology and stability
Summary
Soil infiltration rate plays a key role in slope hydrology and stability. It is one of the most important soil parameters that affects prediction of slope failure mechanism, especially when soil–plant interaction in shallow soil is taken into account (Nyambayo & Potts, 2010; Sidle & Bogaard, 2016; Tsiampousi et al, 2017). Increased infiltration rate is more often reported in mature plants (van Noordwijk et al, 1991; Mitchell et al, 1995; Ng et al, 2017), and is attributable to the formation of (a) root channel related macropores associated with root decay (Ghestem et al, 2011) or (b) desiccation cracks upon drying of medium- to high-plasticity clay (Zhan et al, 2007; Jotisankasa & Sirirattanachat, 2017; Song et al, 2017). Limited studies have reported infiltration data at different plant ages (Table 1), the role of root growth dynamics is generally ignored, leaving gaps in the understanding of its effects on infiltration
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