Coupling of a subsurface drainage model with a soil reservoir model to simulate drainage discharge and drain flow start

Henine, Hocine; Jeantet, Alexis; Chaumont, Cédric; Chelil, Samy; Lauvernet, Claire; Tournebize, Julien

doi:10.1016/j.agwat.2021.107318

Cited by 9 publications

(18 citation statements)

References 69 publications

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“…A subsurface drainage system composed of perforated polyvinyl chloride (PVC) pipes drains the plot, with an inter-drain spacing of 10 m at an average depth of 0.9 m. The drainage network was settled in the 80s during campaigns managed by INRAE (formerly CEMAGREF) to evaluate drainage modalities according to pedological and climatic conditions. The water-holding capacity was estimated to be 104 mm (Henine et al, 2022). The crop system is a two-year rotation of winter wheat and maize.…”

Section: Study Sitementioning

confidence: 99%

“…Cover crops are used once every two years in the period included from the harvest of winter wheat to the sowing of maize. The surface runoff is deemed negligible on this site (Kuzmanovski et al, 2015;Henine et al, 2022) and thus it was not studied here.…”

Section: Study Sitementioning

confidence: 99%

“…Unlike most current subsurface drainage models, the SIDRA-RU model use strong assumptions, such neglecting current crop to simulate CET. This assumption is based on the fact that, despite being managed by the two-year crop rotation winter wheat/maize and the absence/presence of cover crops, the water balance of the studied site is not affected by current crop (Henine et al, 2022). A more detailed description of the SIDRA-RU model is provided by Henine et al (2022) and Jeantet et al (2021).…”

Section: The Sidra-ru Modelmentioning

confidence: 99%

“…On the contrary, indicators describing flood events, such as the flashiness index (Deelstra, 2015) that indicates the speed of change from one state to another, can be useful for describing drainage dynamics. Other HI classes helping farmers in the management of pollutants can also be particularly relevant, such as the beginning of the drainage season (Henine et al, 2022) or the duration of soil dryness or saturation. Introducing these new HI classes in drainage research can help gain knowledge about the future of subsurface drainage, providing useful information to the stakeholders concerned.…”

Section: Introductionmentioning

confidence: 99%

“…We use 30 Euro-Cordex future climate projections distributed over three RCPs: RCP2.6, RCP4.5 and RCP8.5. These climate projections feed the subsurface drainage model SIDRA-RU (Henine et al, 2022), a lumped and parsimonious model which has demonstrated good performance and temporal robustness in simulating subsurface drainage fluxes in France (Jeantet et al, 2021). The SIDRA-RU model provides subsurface drainage discharges, which then allow us to calculate 17 hydrological indicators specific to subsurface drainage, which constitute a uniquely large range of complementary indicators and give a comprehensive view of the subsurface drainage response.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Climate Change on Hydrological Indicators of Subsurface Drainage for a Representative French Drainage Site

Jeantet

Thirel

Jeliazkov

et al. 2022

Front. Environ. Sci.

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The aim of this study is to evaluate from a hydrological perspective and in the context of climate change the future of subsurface drainage of the La Jaillière site (western France), which is representative of the pedology of the majority of French subsurface drainage. We used a uniquely large and comprehensive range of 17 hydrological indicators (HIs), describing the temporal dynamics of drainage season, soil saturation, drained water balance and flood events. The HI values are calculated from simulated discharges provided by a subsurface drainage model, the SIDRA-RU model, fed by 12 climate projections from 1975 to 2100 (CMIP5 Euro-Cordex project), with three climate change scenarios: Representative Concentration Pathways (RCP) 2.6, RCP4.5 and RCP8.5. We first verified that the HIs simulated using climate projections in the SIDRA-RU model over the historical period were not critically biased compared to the HIs obtained from the reference climatic reanalysis (SAFRAN). Second, we analysed and compared the HI evolution over different periods and under different scenarios. Our results showed that the number of significant changes in HI values increased under climate change by 2100, depending on the RCP: 2 HIs out of the 17 changed under RCP2.6; 6 HIs under RCP4.5; 10 HIs under RCP8.5. The intensity of drainage peak flows linked to flood events and the annual maximal discharge changed significantly under all RCPs. The temporality of the drainage season was substantially affected according to how pessimistic the RCP was. The worst changes were observed under RCP8.5, which exacerbated extreme events: The wet period was shorter while the dry period was longer by about 67%; the drought index increased by 100%; the summer drained water balance decreased by 9%. On the contrary, in winter, the duration of the wet period decreased while maintaining the same drained water balance, thus inducing stronger flood events leading to an earlier saturation of the drainage networks. The sustainability of the drainage system design at La Jaillière is therefore threatened, with the risk of fulfilling its function less effectively by 2100, exposing current crops to more important runoff and affecting water quality by increasing the leaching of agrochemical inputs.

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Section: Study Sitementioning

confidence: 99%

Section: Study Sitementioning

confidence: 99%

Section: The Sidra-ru Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Climate Change on Hydrological Indicators of Subsurface Drainage for a Representative French Drainage Site

Jeantet

Thirel

Jeliazkov

et al. 2022

Front. Environ. Sci.

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Shifting application dates on cereal reduces pesticide transfer via subsurface drainage based on water flow forecasts during autumn applications

Tournebize

Jeantet

Marks-Perreau³

et al. 2023

Pest Management Science

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BACKGROUND Thanks to the changes in aquatic risk assessment within the marketing authorization (MA) process in France, the contamination of surface water through the subsurface drainage network is better accounted for. The measure adopted by risk regulations is to prohibit any use of selected pesticides on drained plots. Herbicide solutions on subsurface‐drained plots are becoming scarce due to a limited number of innovations combined with the re‐approvals process. Autumn weed management then becomes a major issue for winter cropping systems on drained plots. Unlike runoff prevention, few risk management measures are available to prevent the risks associated with drained plots. RESULTS We analyzed data from La Jaillière, an ARVALIS experimental site (nine plots, 1993 to 2017), representative of scenario D5 from the EU FOCUS Group, for four herbicides (isoproturon, aclonifen, diflufenican, flufenacet). Our study demonstrates the relevance of the time application management measure by showing the decreasing trend in the transfer of pesticides in drained plots. In addition, it validates, still on the La Jaillière site, the hypothesis of a management measure based on an indicator of soil profile saturation before drainage flow (soil wetness index, SWI). CONCLUSIONS A conservative measure consisting of restricting pesticide applications during autumn, when the SWI is <85% of saturation, reduces the risk by a factor of 4–12 for quantification above the predicted no‐effect concentration and values of maximum or flow weight average concentrations by 70‐ and 27‐fold, ratio of exported pesticide by 20‐fold, and total flux by 32. This measure based on SWI threshold appears to be more efficient than those using other restriction factors. SWI can be easily calculated by considering the local weather data and soil properties for any drained field. © 2023 Society of Chemical Industry.

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NIT-DRAIN model to simulate nitrate concentrations and leaching in a tile-drained agricultural field

Chelil

Henine

Chaumont

et al. 2022

Agricultural Water Management

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Coupling of a subsurface drainage model with a soil reservoir model to simulate drainage discharge and drain flow start

Cited by 9 publications

References 69 publications

Effects of Climate Change on Hydrological Indicators of Subsurface Drainage for a Representative French Drainage Site

Effects of Climate Change on Hydrological Indicators of Subsurface Drainage for a Representative French Drainage Site

Shifting application dates on cereal reduces pesticide transfer via subsurface drainage based on water flow forecasts during autumn applications

NIT-DRAIN model to simulate nitrate concentrations and leaching in a tile-drained agricultural field

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