Yanchi County is located at the junction of Shaanxi, Gansu, Ningxia and Mongolia provinces, bordering lingwu city and Tongxin County in the west, Etuokeqian Banner in Inner Mongolia in the north, Dingbian County in Shaanxi Province in the east and Huanxian County in Gansu Province in the south. Yanchi County is 1 10 km long from north to south and 66 km wide from east to west. The county seat is away from Yinchuan 13 1 km, the capital of the autonomous region. The total area is 8522.2 square kilometers.
Yanchi has a long history. In the early Han Dynasty, a county was established, named Yan Yan; In 553, it was changed to Yanzhou; The Northern Song Dynasty was one of the twenty-two states of Xixia. 1443, MCA Chiying was established; 1507 Zhu Hua Ma Chicheng; Yanchi County is located at 19 13, belonging to Shuofang Road. 1936 On June 2 1 day, Yanchi County was liberated. 1April, 953 to1June, 958, Wuzhong Hui Autonomous Prefecture was established to administer Wuzhong, Jinji, Lingwu, Tongxin and Yanchi. 1May, 998, Yin Nan District and county-level Wuzhong were abolished, and prefecture-level Wuzhong was established. Yanchi County is still under the jurisdiction of Wuzhong.
Geographical environment of Yanchi county
Yanchi County is high in the south and low in the north, with loess hilly areas in the south, with an altitude of 1600 to 1800 meters and criss-crossing gullies. The northern part is the gentle slope hilly area of Ordos, with an altitude of 1400 to 1600 meters, which is open and gentle.
Yanchi County has long sunshine and large temperature difference, which belongs to a typical continental monsoon climate, with little rain, abundant light energy and abundant sunshine. The annual average temperature is 7.8℃, and the average temperature difference between winter and summer is about 28℃. The highest temperature is 36.7℃, the lowest temperature is minus 20.7℃, the annual average temperature is 9.9℃, the annual precipitation is 313.2mm, the sunshine is 2712.2h, the frost-free period is 188 days, and the sandstorm is 19 times.
Reference to the above content: Baidu Encyclopedia-Yanchi County