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Forests are essential natural ecosystems in the fight against climate change and contribute to the prosperity and well-being of humans around the world. Forests are ecological, economic and social resources, But unfortunately they are threatened throughout the world by massive deforestation.

Every year on the International Day of Forests, the UN encourages countries to undertake local, national or international initiatives involving forests, such as campaigns to plant trees. The theme chosen this year is “ Forests and sustainable production and consumption ”. It is vital to protect this easily renewable resource through sustainable forest management.


World Forest Day is also an opportunity to highlight the work carried out within the Scientific Expertise Centers (CES) of the THEIA hub of DATA TERRA. Two projects carried out within the THEIA hub helps to realize the importance of the use of environmental data, and particularly satellites, in preserving forests.

The SENTINEL-2 satellites make it possible to measure from space several data concerning forests, their areas, their distribution, and their state of health more generally. Satellite images are a powerful tool for the observation of multi-scale data, they also make it possible to measure and evaluate territories that are very difficult to access. The SENTINEL-2 satellites can provide high resolution optical images for terrestrial services, they are part of the Copernicus program of the European space agency ESA


The Scientific Expertise Centers “Changes and Health of Temperate Forests” has developed a method for monitoring the impact of bark beetles on spruces and firs in northeastern France using SENTINEL-2 satellite images. The research work was carried out by teams from INRAE ​​and UMR Tetis. The proposed method uses complete SENTINEL-2 time series since the launch of the first satellite in 2015.

A video presentation by Jean-Baptiste Féret from INRAE ​​to understand the use of remote sensing for monitoring the damage caused by bark beetles.


The Scientific Expertise Centers “Forest Biomass” of DATA TERRA’s THEIA cluster is leading an ambitious project to remotely detect changes in dense tropical forests. The CESBIO and GLOBEO teams are contributing to this via the TROPISCO project .

A video presentation by Stéphane Mermoz of the start-up GlobEO to understand the use of remote sensing for monitoring deforestation on a tropical scale.

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