The impact of across-slope forest strips on hillslope subsurface hydrological dynamics

Peskett, Leo; MacDonald, Alan; Heal, Kate; McDonnell, Jeffrey J.; Chambers, Jonathan; Uhlemann, Sebastian; Upton, Kirsty; Black, Andrew

doi:10.1016/j.jhydrol.2019.124427

Cited by 13 publications

(20 citation statements)

References 52 publications

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“…Rainfall (Pg) also had a significant effect on the two studied soil-water variables (Figures 4g-l and 7g-l), albeit this effect was less clear than the one recorded for Ta [25]. On the one hand, θ v showed a positive response to Pg [4,16,22], entailing a higher θ v increase when Pg intensity was higher ( Figures 2 and 4g-l). In addition, the response of θ v to Pg differed between the willow-vegetated and fallow transects (Figure 4g-l).…”

Section: Discussionmentioning

confidence: 86%

“…Understanding the relationship between hillslope hydrology and soil mechanics has gained relevance over the last ten years (e.g., [11]) as rainfall-induced landslides are becoming more ubiquitous, frequent, and severe as a result of climate change [13]. The knowledge on how hillslope hydrology changes spatially along hillslope transects is still poor (e.g., [14][15][16]) but, generally, researchers agree that water tends to flow and accumulate towards the toe of a hillslope [11]. Similarly, there is generally a good understanding on how soil water affects the mechanical strength of slope-forming materials (e.g., [17,18]).…”

Section: Introductionmentioning

confidence: 99%

“…Still, SWCCs for plant-soil composites either are difficult to obtain or have not yet been reported accurately (e.g., [3,20,21]). Moreover, only a handful of field studies have been undertaken to collect field-based knowledge on how vegetation influences the distribution of soil moisture and matric suction within hillslopes (e.g., [3,16,22]).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Willow (Salix sp.) on Soil Moisture and Matric Suction at a Slope Scale

González-Ollauri

2020

Sustainability

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The aim of this study is to provide new knowledge on the effect of willow on hillslope hydrology at a slope scale. Soil moisture and matric suction were monitored in situ under willow-vegetated and fallow ground covers on a small-scale hillslope in Northeast Scotland for 21 months. The retrieved time series were analysed statistically to evaluate whether the dynamics of soil moisture and matric suction changed with the hillslope zone (i.e., toe, middle, and crest) under the two ground covers. The effect of air temperature and rainfall on the dynamics of soil moisture and matric suction, as well as the relationship between the two soil-water variables, under both ground covers, were also investigated by analysing the cross-correlation between time series. The results of 21 months of monitoring showed that willow contributed substantially to reduce soil moisture and to increase matric suction with respect to fallow soil. Additionally, willow-vegetated soil exhibited higher water retention and moisture buffering capacity than fallow soil. The effect of willow was highest at the hillslope toe due to a denser vegetation cover present within this zone. Both air temperature and rainfall had a strong effect on soil moisture and matric suction. However, the effect of air temperature was more consistent and easier to interpret than that of rainfall. Soil moisture and matric suction were shown to have a complex relationship and the soil water characteristic curve for vegetated soil requires further research. This study provides novel, field-based information supporting the positive effect of willow on hillslope hydrology. The results gathered herein will undoubtedly enhance the confidence of using woody vegetation in Nature-based Solutions (NBS) against geo-climatic hazards.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Willow (Salix sp.) on Soil Moisture and Matric Suction at a Slope Scale

González-Ollauri

2020

Sustainability

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“…The underlying geology in the east includes Silurian bedrock of impermeable well‐cemented, poorly sorted sandstone greywackes (Auton, 2011). However, extensive glaciation during the last glacial maximum has affected the surface geology and soil types (Figure 1a), with significant glacial till deposits in the west, and thick sand and gravel deposits in the centre of the catchment (Aitken, Lovell, Shaw, & Thomas, 1984; Auton, 2011; Ó Dochartaigh et al, 2012, 2018; Peskett et al, 2020; Sissons, 1958). Soils on steeper hillsides are typically freely‐draining brown soils but towards the base of the hillslopes and in the west soils comprise sequences of gleyed clays and peats, or alluvial deposits closer to the river (Soil Survey of Scotland Staff, 1970).…”

Section: Methodsmentioning

confidence: 99%

Natural flood management, lag time and catchment scale: Results from an empirical nested catchment study

Black

Peskett

MacDonald

et al. 2021

J Flood Risk Management

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Natural flood management (NFM) techniques attract much interest in flood risk management science, not least because their effectiveness remains subject to considerable uncertainty, particularly at larger catchment and event scales. This derives from a paucity of empirical studies which can offer either longitudinal or comparison data sets in which changes can be observed. The Eddleston catchment study, with 13 stream gauges operated continuously over 9 years, is based on both longitudinal and comparison data sets. Two years of baseline monitoring have been followed by 7 years of further monitoring after a range of NFM interventions across the 69 km2 catchment. This study has examined changes in lag as an index of hydrological response which avoids dependence on potentially significant uncertainties in flow data. Headwater catchments up to 26 km2 showed significant delays in lag of 2.6–7.3 hr in catchments provided with leaky wood structures, on‐line ponds and riparian planting, while larger catchments downstream and those treated with riparian planting alone did not. Two control catchments failed to show any such changes. The findings provide important evidence of the catchment scale at which NFM can be effective and suggest that effects may increase with event magnitude.

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“…In the last 20 years, more than 200 papers have been published on ISI journals (Figure 1). The TL-ERT method found an impressive number of applications crossing different disciplines, from hydrogeology [9][10][11][12] to agriculture [13][14][15][16], from engineering geology [17][18][19][20] to geohazards [21][22][23][24], from CO2 storage [25] to the study of the effects of the climate changes on soil and near subsurface [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Time-Lapse Electrical Resistivity Tomography (TL-ERT) for Landslide Monitoring: Recent Advances and Future Directions

Lapenna

Perrone

2022

Applied Sciences

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To date, there is a growing interest for challenging applications of time-lapse electrical resistivity tomography (TL-ERT) in Earth sciences. Tomographic algorithms for resistivity data inversion and innovative technologies for sensor networks have rapidly transformed the TL-ERT method in a powerful tool for the geophysical time-lapse imaging. In this paper, we focus our attention on the application of this method in landslide monitoring. Firstly, an overview of recent methodological advances in TL-ERT data processing and inversion is presented. In a second step, a critical analysis of the main results obtained in different field experiments and lab-scale simulations are discussed. The TL-ERT appears to be a robust and cost-effective method for mapping the water-saturated zones, and for the identification of the groundwater preferential pathways in landslide bodies. Furthermore, it can make a valuable contribution to following time-dependent changes in top-soil moisture, and the spatio-temporal dynamics of wetting fronts during extreme rainfall events. The critical review emphasizes the limits and the advantages of this geophysical method and discloses a way to identify future research activities to improve the use of the TL-ERT method in landslide monitoring.

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The impact of across-slope forest strips on hillslope subsurface hydrological dynamics

Cited by 13 publications

References 52 publications

The Effect of Willow (Salix sp.) on Soil Moisture and Matric Suction at a Slope Scale

The Effect of Willow (Salix sp.) on Soil Moisture and Matric Suction at a Slope Scale

Natural flood management, lag time and catchment scale: Results from an empirical nested catchment study

Time-Lapse Electrical Resistivity Tomography (TL-ERT) for Landslide Monitoring: Recent Advances and Future Directions

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