1. Introduction sur l'agriculture

On the basis of the issues linked to the worldwide agricultural activity, Etienne Hainzelin explores the approach of the agroecology, especially the ecological intensification of the farming systems.

Etienne Hainzelin presents the main sorts of ecosystem services evidenced by the Millenium Impact Assessment (2005). He shows that, during the last decades, the development of an industrial

With Etienne Hainzelin and Eric Blanchart, we will discover the third biotic boundary: the soils. They give several data regarding their important biodiversity, and they relate this biodiversity with

The biodiversity plays a key role in the development and the upholding of the agrarian practices all over the world. This biodiversity is related to the grown species and varieties, but also to the

Etienne Hainzelin comes back to the striking evolutions of the agricultural systems for hundred years, particularly in the rich countries. Today, this is an intensified agriculture, based on the

Etienne Hainzelin and Alain Ratnadass take an interest in pests and diseases. It can be defined as the part of the biodiversity which goes against the production. They evidence the paradigm of

Etienne Hainzelin proposes an overview of the main steps of the agriculture evolution since the Neolithic. He shows the current importance of this activity, from a socioeconomic point of view. He also

Etienne Hainzelin presents the main sorts of biodiversity which are linked to the agricultural systems: support biodiversity and destructive biodiversity. He focuses on the first one, and shows that,

Sur la base des enjeux associés à l'activité agricole dans le monde, Etienne Hainzelin explore la voie de l'agroécologie, et notamment de l'intensification écologique des systèmes de culture. Dans

Etienne Hainzelin présente les principaux types de services écosystémiques tels que mis en évidence par le Millenium Impact Assessment (2005). Il montre qu'au cours des dernières décennies, le

Etienne Hainzelin et Eric Blanchart nous emmènent à la découverte de la troisième frontière biotique, à savoir les sols. Ils apportent plusieurs données concernant la biodiversité très importante qu

Etienne Hainzelin revient sur les évolutions marquantes des systèmes agricoles depuis une centaine d'années, en particulier dans les pays riches. Une agriculture intensifiée, basée sur l'apport de