section_path: Geography/Vegetation
section_name: Vegetation
paragraph_text: Vegetation
  
  Nigeria is covered by three types of vegetation: forests (where there is significant tree cover), savannahs (insignificant tree cover, with grasses and flowers located between trees), and montane land (least common and mainly found in the mountains near the Cameroon border). Both the forest zone and the savannah zone are divided into three parts.
  
  Some of the forest zone's most southerly portion, especially around the Niger River and Cross River deltas, is mangrove swamp. North of this is freshwater swamp, containing different vegetation from the saltwater mangrove swamps, and north of that is rain forest.
  
  The savannah zone's three categories are divided into Guinean forest-savanna mosaic, made up of plains of tall grass which are interrupted by trees, the most common across the country; Sudan savannah, with short grasses and short trees; and Sahel savannah patches of grass and sand, found in the northeast.