title: Framework and tools for agricultural landscape assessment relating to water quality protection.
abstract: While many scientific studies show the influence of agricultural landscape patterns on water cycle and water quality, only a few of these have proposed scientifically based and operational methods to improve water management. Territ'eau is a framework developed to adapt agricultural landscapes to water quality protection, using components such as farmers' fields, seminatural areas, and human infrastructures, which can act as sources, sinks, or buffers on water quality. This framework allows us to delimit active areas contributing to water quality, defined by the following three characteristics: (i) the dominant hydrological processes and their flow pathways, (ii) the characteristics of each considered pollutant, and (iii) the main landscape features. These areas are delineated by analyzing the flow connectivity from the stream to the croplands, by assessing the buffer functions of seminatural areas according to their flow pathways. Hence, this framework allows us to identify functional seminatural areas in terms of water quality and assess their limits and functions; it helps in proposing different approaches for changing agricultural landscape, acting on agricultural practices or systems, and/or conserving or rebuilding seminatural areas in controversial landscapes. Finally, it allows us to objectivize the functions of the landscape components, for adapting these components to new environmental constraints.
authors.affiliation: INRA, Agrocampus Ouest, UMR 1069, Soil Agro and HydroSystem, 65 Route de Saint-Brieuc, CS 84215, 35042, Rennes Cedex, France. chantal.gascuel@rennes.inra.fr
authors.forename: Chantal
authors.initials: C
authors.lastname: Gascuel-Odoux
authors.forename: Florence
authors.initials: F
authors.lastname: Massa
authors.forename: Patrick
authors.initials: P
authors.lastname: Durand
authors.forename: Philippe
authors.initials: P
authors.lastname: Merot
authors.forename: Olivier
authors.initials: O
authors.lastname: Troccaz
authors.forename: Jacques
authors.initials: J
authors.lastname: Baudry
authors.forename: Claudine
authors.initials: C
authors.lastname: Thenail
mesh_terms: D000383:Agriculture / Q000379:methods*; D008962:Models, Theoretical; D009566:Nitrates / Q000032:analysis; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis; D014876:Water Pollution / Q000517:prevention & control*; D014881:Water Supply / Q000592:standards*; D053833:Wetlands
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical