Strict nature reserves are areas of unaltered natural characteristics, with representative natural ecosystems, solely intended for the preservation of their original natural life, of their gene pool and their ecological balance, the observation of natural phenomena and processes and scientific research which does not negatively impact these natural features and processes.
Special nature reserves are areas of unaltered, or insignificantly altered natural environments of special importance for their uniqueness, rarity or representative nature. This includes the habitats of endangered wild plant, animal and fungal species, with no human habitation, or only occasional habitation in which humans live in harmony with nature. Their intended purpose is the preservation of existing natural characteristics, the gene pool, ecological balance, the observation of natural phenomena and processes, scientific research and education, controlled public visiting and the preservation of the traditional way of life.
Special nature reserves can be established to protect flowers, fungi, woodland and other plant life, animals (birds, fish and others) and geological, paleontological, water and other features.