The largest city in China

Naqu is a prefecture-level city in Xizang Autonomous Region, located in northern Tibet and the hinterland of Qinghai-Tibet Plateau. It is the source of the Yangtze River, Nujiang River, Lhasa River and Gong Yi, and the "North Gate" of Tibet.

Naqu has 1 1 counties (districts), namely, Seni District, Amdo County, Nie Rong County, Ru County, Jiali County, Suo County, Baqing County, Shenzha County, Bango County, Nima County and Shuanghu County, with a land area of 39.18/kloc.

Naqu is located in the sub-frigid climate zone. Cold and lack of oxygen, large temperature difference between day and night, windy weather. The main rivers in the territory are Naqu River, Gongqu River, Moqu River, Caiyou River and Laoqu River. Larger lakes include Dazi Cuo, Cuo E, Nai Ri Cuo, Cuo Muruo and Cuo Tam.

Geological features:

Naqu City is located between Tanggula Mountain, Nyainqentanglha Mountain and Gangdise Mountain in northern Tibet. The central part of the Ministry is hilly and mountainous, but the slope is relatively gentle and the mountains are mostly round. The altitude in the northwest is relatively high. Because it is located in the branch or residual vein of Nyainqentanglha Mountain, there are many peaks, steep terrain and obvious height difference, all of which are above 5500 meters above sea level. The highest Sangding Sangkang Mountain is about 6500 meters above sea level.

Tanggula mountain area in the north of Naqu area is a typical plateau mountain with irregular oval terrain. Tanggula Mountain is roof-shaped, located in the middle, with high terrain in the middle, low terrain in the north and south, high terrain in the west and low terrain in the east. From 6600 meters in the middle, it gradually drops to 4700 meters in the north and 4500 meters in the south, with an average elevation of more than 5200 meters. The mountains in this area extend from east to west, mainly including Tanggula Mountain, Toljiu Mountain (Little Tanggula) and Sanka Mountain (Shengrigong Mountain).

The eastern part of Naqu is a plateau mountain with an altitude of 3800-4500m, with an average altitude of about 4 100m. The terrain inclines from northwest to southeast, and the altitude gradually decreases. The western region is more than 4400 meters above sea level, with many low mountains and hills; The eastern part is more than 3800 meters above sea level, mountainous and mountainous.

Due to the complex terrain, except for some alpine grasslands in a few places, the rest areas are steep and steep, and deep valleys are formed between mountains. The height difference between the foot of the mountain and the top of the mountain exceeds 1000 meters.

The southern part of Naqu is located at the intersection of the northern Tibet Plateau and the eastern Tibet Alpine Canyon. Some areas are above 5000 meters above sea level and belong to plateau hills. In some areas, the mountains are steep and narrow valleys are formed between mountains; Near Linzhi area, the altitude drops sharply, only 3000 meters above sea level, and there are large valleys and plains.

Reference to the above content: Baidu Encyclopedia-Naqu City