Ever since ecotourism took off in the early 1990s , european travelers have helped to spread the movement across the savannas of africa and the jungles of central america .
Temperatures cooled and the land became dries . Savannas were forming and forests were shrinking .
气温变凉,大地变干,热带稀树草原开始形成,森林渐渐缩小。
Conservation research in uganda 's savannas : a review of park history , applied research , and application of research to park management .
乌干达稀树草原保护研究:公园史述评、应用研究与公园管理的研究应用。
In the forests and savannas where our species got its start , being able to reach up and pluck fruit trees was a good thing .
人类起源于原始深林和稀树大草原,能够站立并摘到树上的果子是非常有利的。
" This is one of the largest intact savannas in africa , " he said .
“这里是非洲最大最完整的热带草原,”埃尔坎说。
My soul flits away into the virgin forests and to the savannas .
我的灵魂飞向森林中的处女地和广漠的平原。
The report goes on to say that " it is more probable that forests will be replaced by ecosystems ...... such as tropical savannas . "
报告中接下来继续写道:“这些雨林很有可能被其他的生态系统所替代,例如热带草原。”
Conventional wisdom says our earliest ancestors first stood up on two legs when they moved out of the forest and into the open savannas .
传统观点认为当人类最早的祖先最初从丛林迁移到平原时,开始用两条腿站立。
Despite the wide variety of fires in the region - including fires for deforestation , agricultural management , and wildfires in savannas and tropical forests - the model managed to captured the variability in forest and savanna fires from one year to the next when considered separately .