The Mont Blanc Environments
Alpine flora comprises all the plant species found in the Alps region.
Mountain vegetation changes gradually depending on altitude, sun exposure and the geographical situation of the massif. Five altitude zones (or bands) have been identified, each one of which supports different types of vegetation.
Foothill zone: pre-Alpine valleys and hills. The zone’s upper limit is at an altitude of 800m.
Montane zone: lower mountain zone, altitude between 800m and 1400m.
Subalpine zone: middle mountain and high altitude meadows, altitude between 1400m and 1800m.
Alpine zone: high mountain zone, at the snowline, altitude between 1800m and 3000m.
Nival zone: level covered in snow throughout most of the year that extends from the first perpetual snow level to above 3000m in altitude.