The LGEEPA establishes the objectives through wich they are selected and promoted:
These represent one or more ecosystems that have not been greatly altered, and house characteristic species of the country´s biodiversity. The Montes Azules Reserve, Chiapa´s biosphere.
These are important national bio-geographical representations due to their scenic beauty and educational value, recreational, historical, etc.
These are places cointaining habitats, whose balanceand preservation depend of existence of species of flora and fauna from the region. Teporingo, biological corridor Chichinautzin, Estado de Mexico.
Areas containing one or several natural elements, that due to their aesthetic, historical or scientific value, are included in the PNA. Bonampak, Chiapas.
Protected Natural Areas are established by governmental institutions. A common characteristic the PNA share is the protection and preservation of their ecosystems.
These are destined to the projection and preservation of the soil, hydrographic basins, and in general, the natural resources located in the area. Hydrographic basin of the Necaxa River, Puebla.
These are areas characterized by their great wealth of flora and fauna, and the presence of species of restricted distribution. Beach of Puerto Arista, Chiapas.
Activities related to research, recreation, tourism and environmental education can be carried out, without damaging the ecosystem.
In the center of the reserve only scientific and environmental education research activities can be carried out. In the buffer zones, non-damaging economic activities are allowed.
Only research, recreation and environmental education activities are allowed, they must be compatible with the area´s characteristics.
Activities related to the sustainable use of natural resources can be carried out, such as: research, recreation, tourism and environmental education.
To preserve the natural environments representative of the different biogeographic and ecological regions of the most fragile ecosystems of the country. To safeguard the genetic diversity of wild species that the evolution of living beings depend on. To secure the sustainable use of the ecosystems.
The activities allowed must be related to the preservation, shelter, research and sustainable use of the species, as well as environmental education.
Only activities related to their preservation, scientific research, recreation and education are allowed.