Answer:
buffer zone.
Step-by-step explanation:
In the conservationist context, the buffer zone corresponds to a strip of land that separates two different geographical, biogeographic or political entities. Its existence can be for political reasons (prevention of violence between two zones or two states, whose relations are potentially conflicting), conservationist, urbanistic (separation of residential zones and zones of industrial activity). The buffer zone can be temporary (such as a sanitary cord) or permanent (the so-called Philadelphi Corridor, for example).