国产精品99一区二区三_免费中文日韩_国产在线精品一区二区_日本成人手机在线

Qinghai-Tibet Plateau used to have warm lowland 26 mln years ago: study

Source: Xinhua| 2019-08-13 16:20:26|Editor: ZX
Video PlayerClose

BEIJING, Aug. 13 (Xinhua) -- The hinterland of southwest China's Qinghai-Tibet Plateau was a warm and humid lowland nourished by warm air from the Indian Ocean 26 million years ago, according to a recently published study in the journal Chinese Science Bulletin.

The joint research of the Institute of Vertebrate Paleontology and Paleoanthropology and Xishuangbanna Tropical Botanical Garden of the Chinese Academy of Sciences found the diversified fossils of animals and plants in southwest China's Tibet Autonomous Region and recognized the transitions of the Qinghai-Tibet Plateau's ecosystem in the early Miocene, about 23 million years ago.

After researching numerous well-preserved fish fossils, researchers have found that fish in the late Oligocene, about 34 to 23 million years ago, lived in warm low-altitude areas, completely different from the fish in today's plateau.

More than 50 kinds of plant fossils demonstrated that the plants lived in the low-altitude tropical and subtropical areas of the Qinghai-Tibet Plateau in the late Oligocene.

The geological evidence showed that the central part of the plateau rose to a height of nearly 3,000 meters in the early Miocene. Its terrestrial ecosystem thus turned from a tropical and subtropical environment into a cooler temperate climate. Cold-adapted mammals subsequently appeared in the Pliocene, five to three million years ago, according to the study.

The current ecosystem of the Qinghai-Tibet Plateau consists of animals and plants which are adapted to the alpine frozen environment or the cryosphere.

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001383061031
主站蜘蛛池模板: 南投县| 永仁县| 乌兰察布市| 保定市| 延边| 军事| 雷波县| 昌黎县| 沧州市| 黄梅县| 加查县| 平乡县| 湘阴县| 门头沟区| 泰兴市| 新津县| 加查县| 湘西| 峨眉山市| 珲春市| 临湘市| 弥勒县| 尖扎县| 盐亭县| 安岳县| 临夏市| 米脂县| 连州市| 衡阳县| 沙坪坝区| 浏阳市| 潜山县| 南靖县| 图们市| 泾源县| 云霄县| 景洪市| 青铜峡市| 龙游县| 和平县| 资中县|