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The different types of cookies used on this site

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These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

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About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

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How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

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For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at or by post at :


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Last update: May 2021

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Welcome to ECOSYS

UMR ECOSYS - Ecologie fonctionnelle et écotoxicologie des agroécosystèmes

Le service Régulation de la qualité environnementale dans le réseau des services traités par ECOSYS

Dynamique et effets des polluants dans les agroécosystèmes

janvier 2015

Ce service est directement connecté à d’autres services, en particulier, ceux concernés par les modifications du stock et de la dynamique des matières organiques endogènes ou exogènes, ou ceux concernés par la biodiversité ou la production.

En modifiant la dynamique des matières organiques des sols, certaines pratiques agricoles influent sur les facteurs de régulation du devenir et du transfert des contaminants. Par exemple, dans les cas les plus favorables, elles peuvent réduire la dispersion des contaminants organiques en augmentant leur rétention ou leur dégradation dans les sols. Mais, certaines pratiques, comme le recyclage des Produits Résiduaires Organiques en agriculture, contribuent à la présence d'autres contaminants. La maîtrise de la qualité des PRO valorisés en agriculture inclura donc la prise en compte des traitements sur le devenir des contaminants présents dans les PRO ; cette phase amont sera intégrée aux modèles de devenir-impact développés.

Dans les agroécosystèmes concernés, les effets croisés des différents contaminants sur le fonctionnement biologique des sols sont encore très mal évalués, ainsi que le rôle des relations biotiques sur les effets à long terme des faibles doses.