Why are some vast areas of China sparsely populated?

China’s population is distributed unevenly due to complex natural conditions that favor the eastern half of the country, where intensive agriculture is supported by alluvial plains. In contrast, vast areas in the west and northwest are sparsely populated because they are characterized by extreme, inhospitable environments.1

Key factors contributing to this sparse population include:

• Arid and Barren Landscapes: Regions such as the Takla Makan Desert and the central Tarim and eastern Junggar basins consist of sandy wastes and barren mountains that lack the vegetation necessary to support fixed human settlements.123
• Extreme Climate and Elevation: High-altitude areas, such as the northern part of Tibet, and regions like the Gobi Desert experience extreme temperature fluctuations and harsh winters, often exacerbated by their inland location far from the moderating effects of oceans.14
• Geographic Barriers: The presence of massive mountain ranges and the rain shadow effect of the Himalayas limit moisture and agricultural viability in many western regions.42

While the government has historically encouraged migration to these frontier areas to develop mining and industry, these regions remain significantly less populated than the country's eastern urban centers.15