Duolun County (Mongolian: ᠳᠣᠯᠣᠨ ᠨᠠᠭᠤᠷ ᠰᠢᠶᠠᠨ; Chinese: 多伦县) is a county of Inner Mongolia, China. It is under the administration of Xilingol League.

Quick Facts 多伦县 • ᠳᠣᠯᠣᠨ ᠨᠠᠭᠤᠷ ᠰᠢᠶᠠᠨTo-lun, Country ...

Duolun County 多伦县 • ᠳᠣᠯᠣᠨ ᠨᠠᠭᠤᠷ ᠰᠢᠶᠠᠨ To-lun
County
Duolun Location in Inner Mongolia Show map of Inner Mongolia Duolun Duolun (China) Show map of China
Coordinates: 42°11′N 116°28′E
Country	China
Autonomous region	Inner Mongolia
League	Xilingol
County seat	Dolonnur Town
Area
• Total	3,876 km2 (1,497 sq mi)
Population  (2020)[1]
• Total	103,736
• Density	27/km2 (69/sq mi)
Time zone	UTC+8 (China Standard)
Postal code	027300
Area code	0479
Website	www.dlx.gov.cn

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Duolun County has a dry, monsoon-influenced humid continental climate (Köppen Dwb), with bitterly cold and very dry winters, warm, humid summers, and strong winds, especially in spring. The monthly 24-hour average temperature ranges from −16.9 °C (1.6 °F) in January to 19.4 °C (66.9 °F) in July, with the annual mean at 2.78 °C (37.0 °F). The annual precipitation is 378 millimetres (14.9 in), with more than half of it falling in July and August alone. With monthly percent possible sunshine ranging from 56% in July to 77% in January and February, sunshine is abundant year-round, with 3,036 hours of bright sunshine annually.

The desertification in early 2000s has been largely checked by the effort of reforestation.^[2]

Duolun County is divided into 3 towns and 2 townships.

Other: Duolun New Industrial Chemical Zone (多伦新型工业化化工区)

The Chinese state news agency Xinhua announced in January 2018 the discovery of ruins of an ancient palace that served as the summer retreat for the elite in the Liao Dynasty. The royal family and retinue would relocate each year from mid-April to mid-July to avoid the heat. More than 100 structural components at the site have been found and the foundations of 12 buildings have been recorded. Artifacts found include: glazed tiles, pottery and copper nails. Ge Zhiyong, a researcher with the Inner Mongolia Autonomous Region Institute of Archaeology, date the artifacts to the mid-Liao Dynasty. The dynasty was the first of many dynasties of nomadic origin to merge its nomadic structure and culture with the Chinese style of government.^[6]