To understand the area, and why specific plants grow in particular areas,the Cévennes is divided into 55 different
types of habitat, each with a particular climate, soil, temperature and rainfall.
The Cévenol countryside is divided into 7 main types (wet, dry, grassy, rocky etc.). Each type has many very different habitats. Each These habitats are further divided down, into usually about 2-5 sub-groups. The descriptions of each sub-group, together with their
identifying code (in France, this is the national Corine system).