Switzerland IUCN Protected Area Categories and National Park Classification Index

IUCN Category IV is built around focused ecological management. Rather than emphasizing wilderness, a singular monument, or broad public recreation, this category is used where the central task is to maintain, conserve, restore, or manage particular species, habitats, or ecological conditions. Many Category IV areas require active intervention, sometimes on an ongoing basis, because their conservation values depend on management actions such as water-level control, grazing regimes, fire management, invasive-species removal, nest-site protection, or habitat restoration. The category is especially important for places where biodiversity goals are precise, operational, and management-intensive.

IUCN Category V recognizes that some of the world's most valuable conservation landscapes are not places without people, but places shaped by a long and continuing interaction between people and nature. In these areas, biodiversity, cultural identity, local livelihoods, scenic quality, and historical land-use patterns are often deeply intertwined. The category is used where safeguarding the integrity of that interaction is itself essential to conservation. Category V is therefore especially relevant to lived-in landscapes and seascapes whose value depends on continuity, stewardship, and the maintenance of characteristic ecological and cultural patterns over time.

IUCN Category Ia represents the most tightly protected end of the protected-area spectrum. A Strict Nature Reserve is primarily established to conserve biodiversity, geodiversity, or especially fragile ecological conditions by keeping direct human pressure extremely low. These areas are usually not designed around recreation, broad tourism, or everyday public access. Instead, they are places where ecological integrity comes first, and where entry, use, and management interventions are normally limited to what is necessary for conservation, research, monitoring, and tightly controlled stewardship.