|— Prefecture-level city —|
|Country||People's Republic of China|
|Municipal seat||Hailar District|
|• Total||263,953 km2 (101,913 sq mi)|
|• Density||9.7/km2 ( 25/sq mi)|
|• Major nationalities||Han - 81.85%
Mongols - 8.6%
Manchu - 4.13%
|Time zone||China Standard (UTC+8)|
Hulunbuir or Hūlúnbèi'ěr (Mongolian: kölün buyir, Mongolian Cyrillic: Хөлөнбуйр; Chinese: 呼伦贝尔市) is a region that is governed as a prefecture-level city in northeastern Inner Mongolia, in the People's Republic of China. Its administrative center is located at Hailar District, its largest urban area. Major scenic features are the high steppes of the Hulun Buir grasslands, the Hulun and Buir lakes (the latter partially in Mongolia), and the Khingan range. Hulun Buir borders Russia to the north and west, Mongolia to the south and west, Heilongjiang province to the east and Hinggan League to the direct south. Hulunbuir is a linguistically diverse area: next to Mandarin Chinese, Mongolian dialects such as Khorchin and Buryat, the Mongolic language Dagur and some Tungusic languages are spoken there.
Traditionally, Hulunbuir was a part of Mongolia and the eastern part of the area was known as Barga. From 1912-1949, during the Republic of China (ROC) period, Hulunbuir was part of Xing'an and Heilongjiang provinces. During the Japanese occupation of China, Hulunbuir became part of the Japanese puppet state Manchukuo, which was not recognized by the Chinese. In the Chinese Civil War, the Communist Party of China gained the support of Inner Mongol leaders like Ulanhu by promising the irredentist expansion of Inner Mongolia into areas that had majorities of Han and Manchu peoples. After the 1949 Communist revolution, Hulunbuir was annexed into Inner Mongolia, but the region kept economic ties to the rest of the northeast (Manchuria) via the Chinese Eastern Railway.
During the Cultural Revolution, the parts of historical Manchuria inside Inner Mongolia were briefly restored to their original provinces; Hulunbuir was given back to Heilongjiang from 1969 to 1979. Until October 10, 2001, Hulunbuir was administered as a League. The area is 263,953 km2 (101,913 sq mi) and population 2.710 million as of 2004, while the gross domestic product was RMB 21.326 billion. The jurisdiction area of the city is larger than all but 8 Chinese province-level divisions (and 42 U.S. states), although the actual urban agglomeration is just a very small part of the region, and the average population density of the area is very low.
Administrative subdivisions 
|1||Hailar District||海拉尔区||Hǎilā'ěr Qū||344,947||1,440||181|
|*||Zhalainuoer District||扎赉诺尔区||Zhālàinuò'ěr Qū||97,000||272||357|
|2||Manzhouli City||满洲里市||Mǎnzhōulǐ Shì||152,473||424||360|
|3||Zhalantun City||扎兰屯市||Zhālántún Shì||366,326||16,800||26|
|4||Yakeshi City||牙克石市||Yákèshí Shì||352,177||27,590||14|
|5||Genhe City||根河市||Gēnhé Shì||110,441||19,659||9|
|6||Ergun City||额尔古纳市||É'ěrgǔnà Shì||76,667||28,000||3|
|7||Arun Banner||阿荣旗||Āróng Qí||278,744||12,063||27|
|8||New Barag Right Banner||新巴尔虎右旗||Xīnbā'ěrhǔ Yòu Qí||36,356||25,102||1|
|9||New Barag Left Banner||新巴尔虎左旗||Xīnbā'ěrhǔ Zuǒ Qí||40,258||22,000||2|
|10||Old Barag Banner||陈巴尔虎旗||Chénbā'ěrhǔ Qí||58,244||21,192||3|
|11||Oroqin Autonomous Banner||鄂伦春自治旗||Èlúnchūn Zìzhìqí||223,752||59,800||5|
|12||Evenk Autonomous Banner||鄂温克族自治旗||Èwēnkèzú Zìzhìqí||134,981||19,111||7|
|13||Morin Dawa Daur Autonomous Banner||莫力达瓦达斡尔族自治旗||Mòlìdáwǎ Dáwò'ěrzú Zìzhìqí||276,912||10,500||30|
|Part of Oroqin Autonomous Banner is subordinate to Da Hinggan Ling Prefecture in Heilongjiang.|
Hulunbuir is the largest city in the world based on surface area.
Geography and climate 
The city proper of Hulunbuir itself (Hailar) has a humid continental climate (Köppen Dwb) bordering on a subarctic climate (Köppen Dwc), although the northern part of the prefecture-level city is solidly subarctic. Winters are long, very dry and severe, due to the semi−permanent Siberian High, while summers are short, though very warm, and rather wet, due to the East Asian monsoon. At Hailar, the monthly 24-hour average temperature ranges from −25.1 °C (−13.2 °F) in January to 20.0 °C (68 °F) in July, while the annual mean is −0.96 °C (30.3 °F). With at least 55% of possible sunshine in all months and an annual total greater than 2,700 hours, sunny weather dominates year-round. Approximately 70% of the annual rainfall occurs during the three summer months.
|Climate data for Hailar District (1971−2000)|
|Average high °C (°F)||−19.2
|Average low °C (°F)||−30.0
|Precipitation mm (inches)||3.4
|Avg. precipitation days (≥ 0.1 mm)||7.6||5.9||5.6||5.9||7.0||12.9||14.5||12.4||9.5||6.2||7.1||9.6||104.2|
|Mean monthly sunshine hours||167.0||195.6||244.1||246.2||298.0||285.9||279.8||268.7||218.6||210.1||165.3||139.4||2,718.7|
|Source: China Meteorological Administration|
Demographics (as of 2000) 
- Bulag, Uradyn (2005). "Inner Mongolia". In Rossabi, Morris. Governing China's Multiethnic Frontiers. University of Washington Press. pp. 90–91.
- Shabad, Theodore (1972). China's Changing Map: National and Regional Development, 1949-71. Taylor & Francis. pp. 237–239.
- "中国地面国际交换站气候标准值月值数据集（1971−2000年）" (in Simplified Chinese). China Meteorological Administration. Retrieved 2011−01−16.
Further reading 
- Jinri Nei Menggu: Hulun Bei'er 今日内蒙古: 呼伦贝尔 (Inner Mongolia today: Hulun Buir). 内蒙古人民出版社 (Inner Mongolia People's Publishing House), 呼和浩特 Hohhot 1997, ISBN 7-204-03545-3, 9+129 pages