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MOSAIC

Landscape approach of soil organic matter dynamics in intensive mixed agrosystems, in the context of global change

Landscape approach of soil organic matter dynamics in intensive mixed agrosystems, in the context of global change

Landscape approach of soil organic matter dynamics in mixed agrosystems
Soil organic matter dynamics (SOM) affects both production and environmental functions of agrosystems. An optimal management of SOM could contribute significantly to improving agroecosystems resilience and sustainability in mixed agricultural landscapes.

Understanding and managing soil organic matter dynamics at landscape scale
The objective of the project is to investigate SOM dynamics (stocks and related fluxes) in intensive mixed-agricultural landscape, and the impacts of global changes on SOM resilience. The project focuses on quantifying and understanding the heterogeneity in SOM dynamics at landscape scale, in landscape presenting contrasted cropping systems in terms of organic matter inputs and soil water regime. The project is divided into three main research axis: (1) quantifying variability and co-variability of existing organization of cropping systems, environmental factors, and SOM stocks, over agricultural landscape, (2) better understanding of processes governing SOM dynamics in a range of cropping systems and environmental conditions, (3) modeling and prospective simulation of SOM dynamics over landscape. The results of this research will ultimately contribute to design landscape management strategies to adapting farming systems to global change.

Combining observations, experiments and modeling
These issues are addressed in a single long term research study site (ORE AgrHys). The site is heterogeneous in terms of cropping systems and environmental conditions: it is representative of intensive mixed agricultural area of western Europe, and presents gradients of soil water regime from welldrained soils to temporarily or permanently saturated soils. The project is interdisciplinary and will combine different approaches of SOM dynamics: advanced techniques regarding SOM dynamics (geochemistry, biology), and landscape perspective of production and environmental functions of agroecosystems (agronomy, landscape ecology). This program involves observations, experiments and modeling.

Results

NA

Outlook

NA

Scientific outputs and patents

NA

Partners

UMR 1069 SAS Sol Agro et hydrosystème Spatialisation INRA Agrocampus-Ouest
UMR 7618 BIOEMCO UMR 7618 BIOEMCO
UMR 1347 Agroécologie UMR 1347 Agroécologie Agrosup INRA Université de Bourgogne
UMR 6118 Géosciences Rennes UMR 6118 Géosciences Rennes CNRS Université de Rennes 1
UMR 6282 Biogéosciences UMR 6282 Biogéosciences CNRS Université de Bourgogne

ANR grant: 729 086 euros
Beginning and duration: novembre 2012 - 48 mois

 

ANR Programme: Viabilité et adaptation des écosystèmes productifs, territoires et ressources face aux changements globaux (Agrobiosphere) 2012

Project ID: ANR-12-AGRO-0005

Project coordinator:
Valérie VIAUD (Sol Agro et hydrosystème Spatialisation INRA Agrocampus-Ouest)
valerie.viaud@rennes.inra.fr

Scientific manager UMR Agroécologie : Pierre-Alain MARON (INRA) & Lionel RANJARD (INRA)