1. Savannas typically experience a rather prolonged dry season. 稀树草原通常经历一个相当漫长的旱季。
2. Located in tropical areas at low altitudes, savannas are stable ecosystems, some wet and some dry consisting of vast grasslands with scattered trees or shrubs. "热带稀树草原位于热带地区，海拔较低，是一种稳定的生态系统，由广阔的草地和稀疏分布其中的树木或灌木组成，有些地区湿润，有些地区干燥。
3. Savannas experience an annual rainfall of between 1,000 and 2,000 millimeters. 热带草原的年降雨量在1000毫米到2000毫米之间。
4. Some savannas occur on wet, waterlogged soils; others on dry, sandy, well-drained soils. 一些稀树大草原生长在潮湿、涝渍的土壤上；其它则在干燥、多沙、排水良好的土壤上。
5. Experiments suggest that if fire did not occur in savannas in the Americas, species composition would change significantly. 实验表明，如果美洲稀树大草原没有发生火灾，物种组成将发生显著变化。
