在接下来的1500年里，这里的居民享受着比现在稍微温暖和潮湿的气候，他们生活在树木繁茂的草原上，那里有大量的野生谷物草。
For the next 1,500 years, its inhabitants enjoyed a somewhat warmer and damper climate than today, living in a well-wooded steppe area where wild cereal grasses were abundant.
在某些地方，特别是在南美洲，稀树草原的形成似乎与频繁地砍伐和焚烧潮湿的森林作为牧场有关。
On certain sites, particularly in South America, savanna formation seems related to frequent cutting and burning of moist forests for pastureland.
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。
Some savannas occur on wet, waterlogged soils; others on dry, sandy, well-drained soils.
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