Dynamics of runoff and sediment trapping performance of vegetative filter strips: Run-on experiments and modeling

Pan, Dongmei; Zhao, Xueyong; Dyck, Miles; Song, Yaqian; Wu, Pute; Zhao, Xining

doi:10.1016/j.scitotenv.2017.03.158

Cited by 38 publications

(25 citation statements)

References 44 publications

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“…The positive impact of the straw is very efficient at both short and long-term. There is an immediate effect of the mulch as it avoids raindrop impact causing splash erosion (Fernández and Vega, 2014;Gholami et al, 2013), but over a longer period the mulching practice is reinforced by the growth of weeds that will also reduce the overland flow velocity and will increase infiltration (Pan et al, 2017).…”

Section: Short and Long Term Benefits Of Straw Mulchingmentioning

confidence: 99%

An economic, perception and biophysical approach to the use of oat straw as mulch in Mediterranean rainfed agriculture land

Cerdà

Rodrigo‐Comino

Giménez‐Morera

et al. 2017

Ecological Engineering

145

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Soil erosion is a key cause of land degradation in agriculture lands; and it is a worldwide threat that must be solved by means of nature-based strategies to be able to achieve sustainability. The use of mulches can be a solution, but there is a lack of information on long-term effects of the use of straw. Furthermore, little is known about the perception of farmers and the economic cost on the implantation of straw as a conservation measure. Eight paired plots were selected in Sierra de Enguera on an agriculture field to determine the effect of straw cover on soil erosion. Four plots were tilled three times per year (Control) and four plots were not ploughed and 0.125 kg m −2 y −1 of oat straw cover was applied yearly (Straw). The plots were established in 2002, and runoff and sediment was continuously collected after each rainfall event from 2004 till 2014 when the two managements were applied. The results show an immediate effect of the straw mulches as in these plots the runoff (from 7.7 till 5.9%) and soil erosion (from 47 till 26 Mg ha −1 y −1) was reduced already in the first year. The combined effect of the use of straw yearly and the no-tillage strategy resulted in a reduction of the sediment yield, and 11 years later soil erosion rates were two orders of magnitude lower than in the control plot. However, the perception of the farmers on the use of straw is very negative and they claim that subsidies need to be implemented, as the cost of straw mulch is 1.9 times more expensive than traditional tillage.

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Section: Short and Long Term Benefits Of Straw Mulchingmentioning

confidence: 99%

An economic, perception and biophysical approach to the use of oat straw as mulch in Mediterranean rainfed agriculture land

Cerdà

Rodrigo‐Comino

Giménez‐Morera

et al. 2017

Ecological Engineering

145

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“…The Vegetative Filter Strip Modeling System (VFSMOD) is a field‐scale, mechanistic, storm‐based numerical model that has been used in the design of VFSs (Carluer et al, ; Munoz‐Carpena & Parsons, ). The VFSMOD simulates the hydrological and sediment transport processes in VFSs (Munoz‐Carpena & Parsons, ; Pan et al, ) and reliably matches field observations in most cases (Carluer et al, ; Munoz‐Carpena & Parsons, ; Reichenberger & Sur, ).…”

Section: Introductionmentioning

confidence: 64%

“…To guarantee the efficiency of VFSs, a field investigation must be performed regarding the design of VFSs (Carluer, Lauvernet, Noll, & Munoz‐Carpena, ; Donat, Lowry, Alexander, O'Gorman, & Maher, ). Because physically based models enhance understanding of the processes in VFSs, they are widely used as a deterministic tool in the design of VFSs (Carluer et al, ; Pan et al, ). The Vegetative Filter Strip Modeling System (VFSMOD) is a field‐scale, mechanistic, storm‐based numerical model that has been used in the design of VFSs (Carluer et al, ; Munoz‐Carpena & Parsons, ).…”

Section: Introductionmentioning

confidence: 99%

Vegetative filter strips—Effect of vegetation type and shape of strip on run‐off and sediment trapping

et al. 2018

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Vegetative filter strips (VFSs) are a common type of off-site method used to enhance the sustainability of catchment systems by promoting desirable soil and landscape functions. The transport of water run-off and sediment to downstream reaches can be restricted by VFSs in the flow path. The adoption of VFSs is increasing because they have been demonstrated to be effective for trapping run-off and sediment. Thus, an optimized design procedure for developing VFSs is required. To further understand the roles of both vegetation type and geometric size in the design of VFSs, global sensitivity analysis (GSA) within the Vegetative Filter Strip Modeling System was conducted using a traditional elementary effect test and a novel density-based method called PAWN. The analysis involved both a uniform and a concentrated flow scenario.The GSA outcomes indicated that the inputs related to vegetation type were vital for the VFS design, especially in terms of the run-off reduction function of the VFS, irrespective of the scenario that was used. The vertical saturated hydraulic conductivity was the main input responsible for the influence of vegetation type. The inputs related to vegetation type had limited influences on the sediment trapping performance of the VFS, which was shown to be mainly controlled by the length of the VFS. The role of vegetation type in the design of VFSs must be fully considered, especially in cases in which VFSs are established primarily for flood control or run-off reduction purposes. KEYWORDS geometric size, global sensitivity analysis, run-off and sediment trapping, vegetation type, vegetative filter strips

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“…Pesticide degradation on the filter is included between runoff events for long-term pesticide assessments , but neglected during events due to their short duration (minutes to hours). VFSMOD has been successfully tested against measured data for predictions of flow, infiltration, and sediment trapping efficiency (Muñoz-Carpena et al, 1999;Abu-Zreig, 2001;Dosskey et al, 2002;Fox et al, 2005;Han et al, 2005;Pan et al, 2017); tracers and multireactive solutes (Perez-Ovilla, 2010); phosphorus (Kuo and Muñoz-Carpena, 2009); pesticides (Poletika et al, 2009;Sabbagh et al, 2009;Winchell et el., 2011); and colloids (Yu et al, 2013). Previous work studied the global sensitivity of simulated outflow, sediment, and pesticide trapping to VFS-MOD input factors (Muñoz-Carpena et al, 2007Fox et al, 2010).…”

mentioning

confidence: 99%

Shallow water table effects on water, sediment, and pesticide transport in vegetative filter strips – Part 2: model coupling, application, factor importance, and uncertainty

Lauvernet

Muñoz‐Carpena

2018

Hydrol. Earth Syst. Sci.

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Abstract. Vegetative filter strips are often used for protecting surface waters from pollution transferred by surface runoff in agricultural watersheds. In Europe, they are often prescribed along the stream banks, where a seasonal shallow water table (WT) could decrease the buffer zone efficiency. In spite of this potentially important effect, there are no systematic experimental or theoretical studies on the effect of this soil boundary condition on the VFS efficiency. In the companion paper (Muñoz-Carpena et al., 2018), we developed a physically based numerical algorithm (SWINGO) that allows the representation of soil infiltration with a shallow water table.Here we present the dynamic coupling of SWINGO with VF-SMOD, an overland flow and transport mathematical model to study the WT influence on VFS efficiency in terms of reductions of overland flow, sediment, and pesticide transport. This new version of VFSMOD was applied to two contrasted benchmark field studies in France (sandy-loam soil in a Mediterranean semicontinental climate, and silty clay in a temperate oceanic climate), where limited testing of the model with field data on one of the sites showed promising results. The application showed that for the conditions of the studies, VFS efficiency decreases markedly when the water table is 0 to 1.5 m from the surface. In order to evaluate the relative importance of WT among other input factors controlling VFS efficiency, global sensitivity and uncertainty analysis (GSA) was applied on the benchmark studies. The most important factors found for VFS overland flow reduction were saturated hydraulic conductivity and WT depth, added to sediment characteristics and VFS dimensions for sediment and pesticide reductions. The relative importance of WT varied as a function of soil type (most important at the siltyclay soil) and hydraulic loading (rainfall + incoming runoff) at each site. The presence of WT introduced more complex responses dominated by strong interactions in the modeled system response, reducing the typical predominance of saturated hydraulic conductivity on infiltration under deep water table conditions. This study demonstrates that when present, the WT should be considered as a key hydrologic factor in buffer design and evaluation as a water quality mitigation practice.

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Dynamics of runoff and sediment trapping performance of vegetative filter strips: Run-on experiments and modeling

Cited by 38 publications

References 44 publications

An economic, perception and biophysical approach to the use of oat straw as mulch in Mediterranean rainfed agriculture land

An economic, perception and biophysical approach to the use of oat straw as mulch in Mediterranean rainfed agriculture land

Vegetative filter strips—Effect of vegetation type and shape of strip on run‐off and sediment trapping

Shallow water table effects on water, sediment, and pesticide transport in vegetative filter strips – Part 2: model coupling, application, factor importance, and uncertainty

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