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qangtang, or changtang, the high altitude Tibetan Plateau in northern Tibet. most area on the naqu, ngari, most of the Tibetan Plateau refers to the plateau surrounded by many mountains such as Nyainqentanglha Mountain, Gangdese Mountains, Tanggula Mountain, Kunlun Mountain and Hoh Xil. There are many lakes. Including almost the entire Nagqu area and the northeast of the Ali area.
The climate is cold and dry, and the annual average temperature is below 0 °C.
With an average elevation of more than 4,800 meters, low mountains, hills and lakes form a undulating ground distributed over 6,000 meters of hills. Extremely cold temperatures in winter nights can reach minus 40 degrees.
The area is the most intact area in the world where the alpine ecosystem has not been damaged. It is an ideal place to study the ecological biology of rare wild animals.
There are nearly 500 lakes with an area of more than 1 square kilometer and more than 300 lakes with an area of more than 5 square kilometers in Qiangtang. Among them, the relatively large lakes are Nam Co (1920km2), Selin (1640km2), and Zari Nanmu ( 1023km2), etc., the lakes of these lakes are more than 1000 square kilometers.