www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / Innovation

Humans 'on the Tibetan Plateau 3,600 years ago'

(China Daily/Agencies) Updated: 2014-11-22 08:19

People probably moved to the Tibetan highlands 3,600 years ago - an indication of when humans first settled at high altitudes, according to researchers.

Humans were able to settle permanently as high as 3,400 meters on the Tibetan Plateau, which is known as "the roof of the world", by growing altitude-resistant crops and raising livestock, according to a study published in the US journal Science on Thursday.

They survived on wheat and barley imported from the Middle East and on transplants from China such as broomcorn and foxtail millet, said the researchers from China, the United States and Cambridge University in Britain.

"Year-round survival at these altitudes must have led to some very challenging conditions indeed," said lead researcher Martin Jones from Cambridge University's Department of Archaeology.

"This poses further, interesting questions for researchers about the adaptation of humans, livestock and crops to life at such dizzying heights," Jones added.

A sporadic human presence was detected on the plateau as early as 20,000 years ago, while semi-permanent settlers arrived 5,200 years ago.

Researchers said early humans probably first traveled to the plateau to hunt animals, but the discovery of altitude-resistant crops allowed them to put down roots there.

The researchers examined the remains of pigs, sheep and cattle as well as plants at 53 sites across 1,280 km of the northern Tibetan Plateau.

 

Highlights
Hot Topics
...
主站蜘蛛池模板: 欧美一级欧美一级高清 | 日本www免费视频网站在线观看 | 日本高清视频免费在线观看 | 久久精品国产亚洲网站 | 亚洲最黄网站 | 亚洲日本高清影院毛片 | 国产精品综合一区二区三区 | ppypp日本欧美一区二区 | 视频二区在线观看 | 欧美一级特黄特色大片免费 | 成年人免费在线视频网站 | 日韩专区欧美 | 18年大片免费在线观看 | 在线观看91精品国产入口 | 手机在线看片国产日韩生活片 | 久久精品香蕉 | 国产精品久久久久毛片真精品 | 日韩欧美一区二区三区在线 | 欧美一级大片在线观看 | 中国做爰国产精品视频 | 国产精品理论 | 国产2021中文天码字幕 | 精品国产品国语在线不卡丶 | 91国内精品久久久久影院优播 | 91高清免费国产自产 | 男女无遮掩做爰免费视频软件 | 国产精品亚洲片在线不卡 | 国产情侣久久精品 | 成年免费在线观看 | 精品成人在线观看 | 欧美国产成人精品一区二区三区 | 成人欧美一区二区三区视频 | 免费国产综合视频在线看 | 欧美jizzhd精品欧美另类 | 亚洲最新视频在线观看 | 在线国产一区二区 | 精品国产免费人成高清 | 不卡午夜视频 | 日本免费三级网站 | 国产日韩在线播放 | 国产精品亚洲片在线观看不卡 |