人类使撒哈拉变成沙漠

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众所周知,撒哈拉沙漠在今天是个广袤无垠、极为干旱的平原,终年高温干燥、降水极少。然而,几千年前的撒哈拉却是点缀着湖泊的青葱原野。一位考古学家认为,撒哈拉沙漠的形成是由于人类活动引发了一连串的事件,导致撒哈拉演变成今天干燥和贫瘠的状态。考古学家David Wright博士的研究表明,人类在大约8000年前进入了这片地区,并在撒哈拉大量砍伐森林,以及开垦草原和过度放牧,使这片曾经美丽富饶的土地开始衰落。在不到一千年的时间内使撒哈拉由绿洲变成了寸草不生的大荒漠。 As is known to all, the Sahara Desert today is a vast expanse of extremely arid plains with high temperatures and dry temperatures throughout the year, with very little precipitation. However, the Sahara thousands of years ago were dotted with the lush fields of the lake. According to one archaeologist, the Sahara desert was formed as a series of events triggered by human activities that led Sahara to evolve into a dry and barren state today. Studies by archaeologists Dr. David Wright show that humans entered the area some 8,000 years ago and extensive deforestation in the Sahara, as well as reclamation of grasslands and overgrazing, began to make the once beautiful and fertile land begin to decline. In less than a thousand years, the Sahara has been transformed from an oasis into a barren desert.
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