Leaflet Methodology - French version: A systematic nation wide inventory - on the whole French metropolitan territory

Since 2005, the inventory has used a systematic survey covering all of mainland France. This methodology is used on other countries: FI, NO, SE. Its main advantage is to be more flexible and easier to manipulate according to different territorial subdivisions and many purposes. Thereby accurate national and regional results are produced by aggregation of data taken from the last 5 annual campaigns.