Territories are currently faced with a wide range of environmental challenges, but suffer from a lack of access to the information and biophysical data that characterizes these challenges. Territorial Analysis of Environments sheds light on how the data produced on environmental change needs to be processed, completed and disseminated so that local players can take ownership of it. The aim is to present methods for developing local, regional or even global indicators of the changes underway, as well as to understand the logic of the players acting in a given area. To this end, this book places great emphasis on the notions of systems and the modeling approaches used to formalize them. It also presents the data available, and the methods for developing an analysis of their spatial dimension. This is based on a wide range of case studies, combining environmental data and stakeholder games.