Sudanian

Sudanian is an adjective and demonym derived from Sudan. In contemporary usage the standard demonym for people from Sudan is Sudanese; Sudanian is less common and appears mainly in historical, ethnographic, or linguistic contexts to refer to things associated with the Sudan region or with the historical Sudan in Africa. The term can also describe linguistic, cultural, or geographic features related to the Sudan region as used by scholars.

Geography and ecology: In geography and ecology, Sudanian or Sudanian refers to the Sudanian Savanna, a broad belt of tropical savanna that lies south of the Sahel and extends across parts of West and Central Africa. This Sudanian zone is characterized by a distinct wet and dry season, with vegetation ranging from tall grasses to scattered trees, and it supports diverse livelihoods and ecosystems. The term is used in biogeography, climate, and ecology to distinguish this zone from the Sahelian and Guinean savannas.

Historical note: The name Sudan derives from Arabic bilad as-Sudan, meaning "land of the blacks." The term Sudanian has historical usage in older ethnographic or geographic literature to describe peoples or cultures of the Sudan region; however, in modern official use, "Sudanese" is the standard demonym for citizens of the country, and "Sudanian" is primarily encountered in specialized scholarly writing.