There is hereby established the legislative framework concerning the establishment, management and use of protected areas and their natural and biological resources. Important or endangered parts of the territory shall be declared protected areas, according to the following categories: (a) Strictly Natural Reserve – Scientific Reservation; (b) National Park; (c) National Monument; (d) Protected Landscape; (e) Protected Area of Managed Resources – Protected Area with Multi-purpose Utilization. A particular level corresponds to each category of protected area. A management plan shall be prepared for each protected area (art. 15).