Geography of Inner Mongolia

Inner Mongolia (内蒙古) is located in northern China, stretching diagonally from northeast to southwest. It spans approximately 1.183 million square kilometers, making it one of the largest provincial-level regions in China. The region connects Northeast China, North China, and Northwest China, sharing borders with Russia and Mongolia, and features over 4,200 km of frontier boundary.

Its landscape is dominated by vast plateaus, grasslands, deserts, mountains, and river plains. The terrain generally slopes from west to east and from south to north, with an average elevation of around 1,000 meters. It is one of China’s most distinctive geographical regions, known for its dramatic grassland-to-desert transition.

Overall Terrain Structure: Plateau Dominance and Mountain Framework

Inner Mongolia is structurally centered on the Inner Mongolia Plateau (内蒙古高原), supported by three major mountain systems: the Greater Khingan Range (大兴安岭), Yinshan Mountains (阴山), and Helan Mountains (贺兰山).

The region forms a natural pattern of “three mountain systems surrounding a plateau, with plains on the edges and deserts in the west.”

Elevation Characteristics

The average elevation is about 1,000 meters.

• Highest point: Aobaogeda Peak (敖包圪垯峰) in the Helan Mountains (贺兰山) at 3,556 meters
• Lowest point: Areas near Hulun Lake (呼伦湖) at around 540 meters
• Elevation difference: Over 3,000 meters

Landform Composition

• Plateaus: 53.4%
• Mountains: 20.9%
• Hills: 16.4%
• Plains and river flats: 8.5%
• Water bodies: 0.8%

Regional Gradient

• West: Alxa Plateau (阿拉善高原), Ordos Plateau (鄂尔多斯高原) — deserts and Gobi landscapes
• Central: Yinshan Mountains (阴山) and grassland plateaus
• East: Greater Khingan Range (大兴安岭) — forests and wetlands

Major Landform Regions of Inner Mongolia

Inner Mongolia Plateau (内蒙古高原)

The Inner Mongolia Plateau is the core of the region, covering more than half of its total area. It is wide, open, and gently undulating.

Hulunbuir Grassland Plateau (呼伦贝尔高平原)

Located in the northeast, this region is one of the world’s most famous natural pastures.

• Area: about 80,000 sq km
• Elevation: 500–800 m
• Major feature: Hulun Lake (呼伦湖), China’s largest inland freshwater lake
  The landscape is rich in grasslands, wetlands, and rivers, making it a key ecological and pastoral zone.

Xilingol Grassland (锡林郭勒草原)

• Area: about 150,000 sq km
• Elevation: 1,000–1,300 m
  This is one of the best-preserved temperate grassland ecosystems in China, featuring rolling steppe landscapes and traditional nomadic culture.

Alxa Plateau (阿拉善高原)

• Area: about 250,000 sq km
• Elevation: 1,200–1,500 m

This region is dominated by desert landscapes, including:

• Badain Jaran Desert (巴丹吉林沙漠): 47,000 sq km, famous for towering dunes and desert lakes
• Tengger Desert (腾格里沙漠): 43,000 sq km, known for its mix of dunes and oases

Salt lakes and scattered vegetation create a striking desert ecosystem.

Ordos Plateau (鄂尔多斯高原)

• Area: about 80,000 sq km
• Elevation: 1,000–1,500 m

Surrounded on three sides by the Yellow River, this plateau features sandy land and loess hills.

• Mu Us Sandy Land (毛乌素沙地): 42,000 sq km, an important ecological transition zone undergoing restoration

Greater Khingan Range (大兴安岭)

The Greater Khingan Range forms Inner Mongolia’s eastern natural barrier.

• Length: about 1,200 km
• Elevation: 800–1,700 m
• Highest peak: Huanggangliang Peak (黄岗梁) at 2,035 m

This region is heavily forested, with over 70% forest coverage. It features coniferous forests, volcanic landforms, hot springs, and crater lakes, forming one of China’s largest continuous forest ecosystems.

Yinshan Mountains (阴山)

The Yinshan Mountains stretch across central Inner Mongolia and serve as a major climatic and geographical divide.

• Length: about 1,000 km
• Elevation: 1,000–2,000 m
• Highest peak: Daqing Mountain (大青山) at 2,338 m

This mountain range separates pastoral grasslands in the north from agricultural plains in the south. It also marks the 400 mm rainfall boundary in northern China.

Plain Regions: Fertile Agricultural Zones

Hetao Plain (河套平原) and Tumochuan Plain (土默川平原)

• Area: about 25,000 sq km
• Elevation: 900–1,100 m

Known as the “Land of Abundance in the Frontier,” this irrigated plain along the Yellow River is one of Inner Mongolia’s most important grain-producing regions.

Xiliao River Plain (西辽河平原)

• Area: about 18,000 sq km
• Elevation: 200–500 m

Formed by river deposits, this region is a key agricultural base producing corn and soybeans.

Nenjiang West Plain (嫩江西岸平原)

• Area: about 12,000 sq km
• Elevation: 150–300 m

Located on the edge of the Songnen Plain, this region features fertile black soil and high agricultural productivity.

Hills and Transitional Landscapes

Hilly areas account for about 16.4% of Inner Mongolia and serve as transition zones between mountains and plains.

• Greater Khingan foothills: forest–grassland transition zone
• Yinshan southern hills: loess hills with erosion landscapes
• Ordos sandy hills: fragile desert-steppe environment

Hydrology and Lakes

Inner Mongolia contains both external river systems and inland drainage systems.

Major Rivers

• Yellow River (黄河): 830 km within the region
• Nenjiang River (嫩江)
• Xiliao River (西辽河)

Major Lakes

• Hulun Lake (呼伦湖): 2,339 sq km
• Buir Lake (贝尔湖): 600 sq km
• Dalai Lake (达里诺尔湖): 238 sq km
• Wuliangsuhai Lake (乌梁素海): 293 sq km

Desert Landscapes: China’s Major Desert Belt

Inner Mongolia contains one of the largest desert zones in China, covering about 150,000 sq km.

Badain Jaran Desert (巴丹吉林沙漠)

Famous for its towering dunes and over 100 desert lakes.

Tengger Desert (腾格里沙漠)

A landscape of shifting dunes and scattered oases.

Kubuqi Desert (库布齐沙漠)

Located along the Yellow River, known for sand control and eco-tourism.

Mu Us Sandy Land (毛乌素沙地)

A major ecological restoration success story.

Ulan Buh Desert (乌兰布和沙漠)

Characterized by relatively stable dunes and river-edge oases.

Geological Structure and Formation

Inner Mongolia’s landforms were shaped by long-term tectonic movements between the Siberian Plate and North China Plate.

• Sedimentary rocks: 60%
• Igneous rocks: 25%
• Metamorphic rocks: 15%

Major geological evolution occurred through multiple stages, including Paleozoic collisions and Cenozoic uplift linked to the Himalayan orogeny. Fault zones such as the Greater Khingan Fault and Yinshan Fault continue to influence regional topography.

Natural Impact and Tourism Value

Inner Mongolia’s geography creates strong contrasts:

• Eastern forests and wetlands
• Central grasslands
• Western deserts and Gobi landscapes

This diversity supports:

• Pastoral nomadic culture
• Large-scale eco-tourism
• Desert adventure travel
• Grassland tourism experiences

Popular destinations include Hulunbuir Grassland (呼伦贝尔草原), Kubuqi Desert (库布齐沙漠), and Badain Jaran Desert (巴丹吉林沙漠), attracting travelers seeking vast natural scenery and authentic northern China landscapes.