Haidong is named because it is located to the east of Qinghai Lake. Haidong area is located in the east of Qilian Mountain and the northeast of Qinghai Province. Geographical location is between east longitude10041'-kloc-0/0304' and north latitude 35 26'-37 05', between the upper reaches of the Yellow River and its important tributary Huangshui. The whole territory is about 124.5 kilometers long? About180km wide.
Haidong city belongs to semi-arid continental climate. Its basic characteristics are: cold and drought, long sunshine time, strong solar radiation, large temperature difference between day and night, small temperature difference between winter and summer, long winter and short summer, spring and autumn are connected, there is no severe cold in winter and no heat in summer, the climate is mild, the geographical distribution of climate is different, the vertical change is obvious, the temperature decreases with the elevation, and the rainfall increases with the elevation. Due to the great disparity in altitude in Haidong area, there are obvious climate differences.
The mountainous area accounts for 96% of the total area of the whole region. The main mountain ranges are Daban Mountain, Sun Moon Mountain and Laji Mountain. These mountains are branches of the eastern end of Qilian Mountain. There are many rivers in Haidong, which flow through the Yellow River, Huangshui River and Datong River, with more than 20 rivers/kloc-0.
Map of Haidong area in Xining: