1. Designated areas established to safeguard people, property, environment, or strategic interests from potential threats or unwanted activities
The government established protective zones around the nuclear facility.
O governo estabeleceu zonas de proteção ao redor da instalação nuclear.
2. Geographical regions with restricted access or special regulations to preserve ecological or cultural heritage
Several protective zones were created to preserve the endangered species' habitat.
Várias zonas de proteção foram criadas para preservar o habitat das espécies ameaçadas.
3. Buffer areas maintained around sensitive or critical infrastructure for security purposes
Military installations maintain protective zones to prevent unauthorized entry.
Instalações militares mantêm zonas de proteção para evitar entrada não autorizada.