Yinshan mountain system:
Daqingshan:
Daqingshan belongs to the middle part of the yinshan mountains, starting from Kundulun River in the west and ending in Guanshan, Zhuozi County, Wulanchabu League in the east. The total length is about 250 kilometers, passing through Baotou City, Hohhot City and Wulanchabu City in Inner Mongolia 1 1 county. It collects the precipitation brought by the southeast monsoon and is a natural barrier for Hetao Plain, North China Plain and the capital Beijing.
From Kundulun River to the east of Tuyou Beiguogou, the territory is more than 80 kilometers long, with a width of 5- 19 kilometers from north to south and an area of 960 square kilometers. The main peak is in Zhaobei Meidai, with an altitude of 2338 meters, second only to Hu and Bashige in the northwest of Shaanxi Dam, the main peak of Yinshan Mountain.
Wulashan:
Wulashan belongs to the southern branch of the western section of the yinshan mountains, starting from Kundulun River in the east and reaching Xishanzui in Wulate Qianqi in the west, with a length of about 70 kilometers. The territory is 34 kilometers long from the mouth of Kundulun River, adjacent to the Yellow River in the south, with an average width of about 12 kilometers and an area of 400 square kilometers. The main peak of Great North China is 2322 meters above sea level.
Geological landform and climate characteristics of Yinshan Mountain;
Geological features:
Yinshan Mountain is an east-west mountain range and an important geographical dividing line in northern China. Yinshan Mountain is located in the middle of Inner Mongolia Autonomous Region and the northernmost part of Hebei Province. Between east longitude 106 ~ 1 16.
At the western end, it disappeared in the Alashan Plateau with low mountains; The eastern end stops at the upper reaches of Luanhe River west of Duolun, about 1 1,000 km long; The southern boundary is the great cliff on the north side of Hetao Plain, the basins of Datong, Yanggao and Zhangjiakou, and the dam edge mountain on the north side of the valley; The northern boundary is roughly 42 north latitude, which is connected with the Inner Mongolia Plateau, and the north-south width is 50 ~100km.
Climatic characteristics:
There are great differences in landscape and agricultural production between the north and south sides of the mountain range. The average annual temperature in Shannan is 5.6 ~ 7.9℃, the active accumulated temperature above10 is 3,000 ~ 3,200℃, and the frost-free period is 130 ~ 160 days. The temperatures in northern Shaanxi are 0 ~ 4℃, 900 ~ 2,500℃ and 95 ~ 6 respectively. Shannan wind is small and few, with an average annual wind speed of less than 2m/s, while Shanbei wind is large and numerous, with an average annual wind speed of 4-6m/s. ..