Resources and environment: the common good that we share and transmit

The challenged launched to the Agriculture of the 21st century is both complex and simple: how to adjust its capacity to produce and meet the demographic issues while respecting and preserving the access to and management of resources?
The solution to reposition into our practices the comprehension of biodiversity and ecosystems for a sensible and sustainable use of our  soils and resources has become a collective resolution, but which systems, which pubic policies, which organizations and which collective actions can bear this triple challenge of productivity, sustainability of production and combat against the global warming?