Authors: Sirami, Clelia;

The development of agri-environmental indicators is needed to monitor and support the transition towards more sustainable agricultural systems. It will be particularly critical for the next Common Agricultural Policy (CAP). However, the implementation of such indicators at regional, national and EU levels faces a major obstacle, which is the acquisition of relevant data at fine spatial and temporal resolution (e.g. at field level, every year) across large areas. The use of CAP data and satellite data, in particular high-resolution Sentinel images, represents a promising avenue to tackle this challenge. After a short review of the possibilities provided by CAP data and Sentinel images, we will present three agri-environmental indicators currently developped in the H2020 NIVA project: carbon budget, nitrate leaching and biodiversity. We will then focus on the biodiversity indicator, explain its scientific background, the method proposed to calculate this indicator, perspectives to improve this indicator. Finally, we will discuss how such biodiverity indicator could be used by different types of stakeholders, including farmers and policy makers.