According to the classification system of Holdridge life zones (1967), just over 80% of the total area of the reserve is located in the  Premontane rainforest, about 10% corresponds to the life zone of Lower montane rainforest, which corresponds to the upper parts of the row of dead volcanos and mountains in the north eastern boundary, a small percentage (less than 1%) on the southern boundary corresponds to the life zone of the  Very humid Premontane forest.
According to Holdridge life zones (1967), over 80% of the reserve's area falls within the Premontane rainforest, about 10% is in the Lower montane rainforest, which occupies the upper parts of the volcanic mountain range at the northeastern boundary. A small percentage (less than 1%) lies on the southern boundary and corresponds to the Very humid Premontane forest.