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论文作者:www.51lunwen.org论文属性:职称论文 Scholarship Papers登出时间:2015-04-29编辑:Cinderella点击率:7063
论文字数:1344论文编号:org201504231653583309语种:英语 English地区:新西兰价格:免费论文
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摘要:本文研究了早期人类活动与早期生态环境状态,意在激发现代人们的环保意识。
Miller and other archeologists and geologists believe that humans began burning different areas to improve hunting techniques as well as allow new, preferred vegetation to grow. While the burning may have been beneficial to early humans, it deeply affected the animals as well as the climate of Australia. The animals that fed on the destroyed plants, reportedly the larger fauna, died out. The impact on the climate would have been drastic because water that falls to the ground is recycled back into the atmosphere via transpiration of leaves. However if the leaves were destroyed then the environment would be extremely arid. Miller’s research has shown that human habitation, the extinction of megafauna, an increase in fires, and a decrease in rainfall all occurred approximately fifty thousand years ago.
Climatic changes definitely played a role in the civilization of early humans. At the end of the last glaciation period when temperatures were relatively stable, scientists theorize that humans adopted agriculture. The better climate meant more resources and vegetation available for humans; therefore, the small mobile groups could begin to reside in one area. Agriculture was a turning point in early human life because humans began to alter their surroundings for survival (Ponting). The relationship between early humans and their environment is extremely complex. On one hand, the human race survived and prospered despite the climatic difficulties. On the other hand, the blossoming of early humans directly caused the extinction or near-extinction of many species as well as possibly affecting the atmosphere and climate.