Defining context-specific scenarios to design vegetated buffer zones that limit pesticide transfer via surface runoff

Carluer, Nadia (Irstea, Villeurbanne, France) ; Lauvernet, Claire (Irstea, Villeurbanne, France) ; Noll, Dorothea (Irstea, Villeurbanne, France) ; Muñoz-Carpena, Rafael (University of Florida, Gainesville, USA)

When used in addition to environmentally friendly cultural practices, buffer zones can limit the water transfer of pollutants, in particular pesticides, towards water resources. The choice of the buffer zones' type and positioning, considering water pathways and flow components, is crucial. When this choice has been performed, buffer zones dimensions must still be optimized, according to the environment characteristics, which strongly influence their effectiveness. This article presents a method and its associated tools, including VFSMOD model, which aim at optimizing vegetative buffer zones (VFS) sizes, by simulating their transfer mitigation effectiveness. A first application of this methodology is illustrated on a small agricultural watershed in Brittany. A second application, based on the simulation of a large number of scenarios, leads to the elaboration of nomograms. They allow optimizing VFS size in a simpler way from the user's point of view.


Note: NOLL, Dorothea est chercheuse à la HES-SO, Changins depuis 2014.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
Changins
Institute:
Aucun institut
Date:
2017-01
Pagination:
12 p.
Published in:
Science of The Total Environment
Numeration (vol. no.):
2017, vo. 575, pp. 701-712
DOI:
ISSN:
0048-9697
Appears in Collection:



 Record created 2021-03-16, last modified 2021-03-19

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