ecozone; biogeographical realm
Technical term in biogeography for a large area with characteristic flora and fauna. Used in scientific contexts.
The Australasian ecozone is home to many endemic marsupials.
phytogeographical region; floristic kingdom
Composed of 区 (area, zone) and 系 (system, lineage). The exact historical derivation is uncertain; the term is used in modern biogeography.