Is the terrain of Xining in Dingxi, Lanzhou a mountainous area?

Lanzhou 1

Lanzhou City is located in the west of the Loess Plateau in Longxi, with the north and south mountains facing each other, and the East-West Yellow River runs through the city and winds for more than a hundred miles. It is the transition zone from Qinghai-Tibet Plateau to Loess Plateau. Most of the territory is covered with loess hills and basins, with an altitude of1500 ~ 2500m. Rocky Mountain is the remnant vein of Qilian Mountain, which is distributed on the north and south sides of the city. The Rocky Mountains in the south of Yuzhong County and the northwest of Yongdeng County are all above 3000 meters above sea level, of which Ma Xian Mountain is 3670 meters above sea level, Xinglong Mountain is 302 1 meter above sea level, and the main peak of Jianjunbu Mountain is 3455 meters above sea level.

Lanzhou is high in the west and low in the south, and low in the northeast. The Yellow River flows from southwest to northeast, across the whole territory and across mountains, forming a beaded valley with alternating valleys and basins. The canyons include Bapan Gorge, Chaijia Gorge, Sangyuan Gorge, Daxia Gorge and Wujin Gorge. The basins include Xincheng basin, Lanzhou basin, Niwan-Ishikawa basin and Qingcheng-Shuichuan basin. There are Huangshui Valley, Zhuanglang Valley, Yuanchuan Valley and Datong Valley.

2. Dingxi

Dingxi City is located in the middle of Gansu Province, east longitude10352'-10513', north latitude 34 26'-35 35'. Lanzhou and Baiyin in the north, Pingliang and Tianshui in the east, Longnan in the south and Gannan and Linxia in the west. Total area 19609 km2. Located at the intersection of the Loess Plateau, Gannan Plateau and Longnan Mountain, it belongs to the hilly and gully region of the Loess Plateau.

The terrain of Dingxi City inclines from southwest to northeast, and the highest point is Xiangchengmenzhai in southwest Gao Feng, with an altitude of 2577.3 meters. The lowest point is in Guanchuan Valley in the north, with an altitude of 167 1.3m ... the altitude of urban area1898.7m.. The whole territory is located in Guanchuan River basin, a tributary of Zuli River, north of Guanchuan River and Weihe River watershed, east of Guanchuan River and Chyi Chin River watershed, east of Yuanchuan River watershed, east of Gonghe River and Lihe River watershed and west of Zuli River. The geotectonic structure belongs to the eastern part of Caledonian fold belt in Qilian Mountain and a part of Longxi spiral roll. The altitude is between 1930-394 1 m, with an average altitude of 2080m. The southwest is high, and the northeast is complex and diverse.

3. Xining

Xining City is located in the northeast of Qinghai Province, the northeast of Qinghai-Tibet Plateau, where Huangshui River meets three tributaries. East-west belt, with high terrain in the southwest and low terrain in the northeast. Surrounded by mountains, there are Nanshan in the south and Beishan in the north. At the end of 20 12, the built-up area of Xining city is 150 square kilometers, and its geographical coordinates are 10 1 77' and 36 62' north latitude.